Science > Physics > What keeps an electron from being "absorbed" by a proton?
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Science > Physics |
| User: |
"Chris" |
| Date: |
14 Nov 2006 10:37:56 PM |
| Object: |
What keeps an electron from being "absorbed" by a proton? |
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
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| User: "Greg Hansen" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 08:38:03 AM |
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Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
A neutron is heavier than a proton plus electron. You need to give them
enough additional energy to make up the difference.
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| User: "malibu" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
14 Nov 2006 11:35:14 PM |
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Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
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| User: "Sam Wormley" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 12:13:04 AM |
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malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
You totally missed the concept, John! There is a non-zero probabilty
that the "the" electron is in the nucleus. See Mati's reply to the OP.
You might also want to review this
http://particleadventure.org/particleadventure/frameless/chart_cutouts/particle_chart.jpg
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| User: "malibu" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 07:38:42 AM |
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Sam Wormley wrote:
malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
You totally missed the concept, John! There is a non-zero probabilty
that the "the" electron is in the nucleus. See Mati's reply to the OP.
The Galaxy Model indicates that the electron is
*always* inside the nucleus- at least the part
of it being recharged is!
As the electron radiates away its spin energy, the parts
of it that fall below a certain level are drawn back into the proton-
from whence they came- and are spun back up-
*inside the nucleus*- and repelled back out the 'poles of the
holes'.
It's a cycle that includes the nucleus, Sam.
John
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| User: "Igor" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 11:26:22 AM |
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malibu wrote:
Sam Wormley wrote:
malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
You totally missed the concept, John! There is a non-zero probabilty
that the "the" electron is in the nucleus. See Mati's reply to the OP.
The Galaxy Model indicates that the electron is
*always* inside the nucleus- at least the part
of it being recharged is!
As the electron radiates away its spin energy, the parts
of it that fall below a certain level are drawn back into the proton-
from whence they came- and are spun back up-
*inside the nucleus*- and repelled back out the 'poles of the
holes'.
It's a cycle that includes the nucleus, Sam.
John
So what equations govern this so called Galaxy Model? And just what
predictions does it make?
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| User: "Sam Wormley" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 09:55:04 AM |
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malibu wrote:
The Galaxy Model indicates that the electron is *always* inside the
nucleus- at least the part of it being recharged is! As the electron
radiates away its spin energy, the parts of it that fall below a certain
level are drawn back into the proton- from whence they came- and are
spun back up- *inside the nucleus*- and repelled back out the 'poles
of the holes'. It's a cycle that includes the nucleus, Sam.
John
The smart model is insignificant... in fact, doesn't even exist!
The galaxy model is insignificant... in fact, doesn't even exist!
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| User: "edwin" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 01:45:08 PM |
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malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
I wholly agree with you. The process of doing it is quite easy...the
problem is the conventional theory disagrees with it. This is the
reason why science in this area does not progress.
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| User: "Igor" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 02:09:09 PM |
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edwin wrote:
malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
I wholly agree with you. The process of doing it is quite easy...the
problem is the conventional theory disagrees with it. This is the
reason why science in this area does not progress.
Shows what you think you know. Conventional theory also agrees with
this. Two oppositely spinning electrons are slightly attracted to each
other, so they pair up. Two parallel spinning electrons are all the
more repulsed. That stuff about them becoming neutrons is just more
nonsense, however.
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| User: "malibu" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
16 Nov 2006 09:48:59 AM |
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Igor wrote:
edwin wrote:
malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
I wholly agree with you. The process of doing it is quite easy...the
problem is the conventional theory disagrees with it. This is the
reason why science in this area does not progress.
Shows what you think you know. Conventional theory also agrees with
this. Two oppositely spinning electrons are slightly attracted to each
other, so they pair up. Two parallel spinning electrons are all the
more repulsed. That stuff about them becoming neutrons is just more
nonsense, however.
No, but wait, Igor.
Let's follow this thought process through.
Two oppositely-spinning electrons you say. OK, I'll
turn one over- now they're spinning the same way. How
do they ever stay same- or opposite- when we can
just view it from a different angle?
How? Because they have this spin with respect to their own
center, not with respect to some arbitrary plane.
Now draw a line through that center and rotate the line
like a driveshaft. The part of the line on one side
of center will rotate clockwise wrt that center, while
the part of the line on the other side rotates counterclockwise
WRT that center. But the whole line rotates as a unit.
Now line up your charges along this vortex/funnel;
when a bunch of charges have the same
spin, opposite charges repel and like charges attract.
So, because opposing electrons having opposite spin
are now facing each other, they can share a common center,
which is what happens in Cooper pairs.
John
Galaxy Model
http://users.accesscomm.ca/john
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| User: "Igor" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
16 Nov 2006 10:33:06 AM |
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malibu wrote:
Igor wrote:
edwin wrote:
malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
I wholly agree with you. The process of doing it is quite easy...the
problem is the conventional theory disagrees with it. This is the
reason why science in this area does not progress.
Shows what you think you know. Conventional theory also agrees with
this. Two oppositely spinning electrons are slightly attracted to each
other, so they pair up. Two parallel spinning electrons are all the
more repulsed. That stuff about them becoming neutrons is just more
nonsense, however.
No, but wait, Igor.
Let's follow this thought process through.
Two oppositely-spinning electrons you say. OK, I'll
turn one over- now they're spinning the same way. How
do they ever stay same- or opposite- when we can
just view it from a different angle?
That only makes sense in classical mechanics. In quantum, it's either
spin up or spin down. Only one axis can ever be defined for angular
momentum of any type due to commutability issues.
How? Because they have this spin with respect to their own
center, not with respect to some arbitrary plane.
Now draw a line through that center and rotate the line
like a driveshaft. The part of the line on one side
of center will rotate clockwise wrt that center, while
the part of the line on the other side rotates counterclockwise
WRT that center. But the whole line rotates as a unit.
Who says anything's actually rotating? We're talking spin here, which
is a quantum effect. Electrons can't actually rotate. They're point
particles.
Now line up your charges along this vortex/funnel;
when a bunch of charges have the same
spin, opposite charges repel and like charges attract.
So, because opposing electrons having opposite spin
are now facing each other, they can share a common center,
which is what happens in Cooper pairs.
Again, you're describing a quantum effect. Maybe you should learn a
little more about it before discussing it.
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| User: "malibu" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
16 Nov 2006 01:19:14 PM |
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Igor wrote:
malibu wrote:
Igor wrote:
edwin wrote:
malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
I wholly agree with you. The process of doing it is quite easy...the
problem is the conventional theory disagrees with it. This is the
reason why science in this area does not progress.
Shows what you think you know. Conventional theory also agrees with
this. Two oppositely spinning electrons are slightly attracted to each
other, so they pair up. Two parallel spinning electrons are all the
more repulsed. That stuff about them becoming neutrons is just more
nonsense, however.
No, but wait, Igor.
Let's follow this thought process through.
Two oppositely-spinning electrons you say. OK, I'll
turn one over- now they're spinning the same way. How
do they ever stay same- or opposite- when we can
just view it from a different angle?
That only makes sense in classical mechanics. In quantum, it's either
spin up or spin down. Only one axis can ever be defined for angular
momentum of any type due to commutability issues.
How? Because they have this spin with respect to their own
center, not with respect to some arbitrary plane.
Now draw a line through that center and rotate the line
like a driveshaft. The part of the line on one side
of center will rotate clockwise wrt that center, while
the part of the line on the other side rotates counterclockwise
WRT that center. But the whole line rotates as a unit.
Who says anything's actually rotating? We're talking spin here, which
is a quantum effect. Electrons can't actually rotate. They're point
particles.
Whoa. Nellie- two posts ago you said, "Shows what you think you know.
Conventional theory also agrees with
this. Two oppositely spinning electrons are slightly attracted to each
other, so they pair up. Two parallel spinning electrons are all the
more repulsed. That stuff about them becoming neutrons is just more
nonsense, however. "
So, whatever the spin you were talking up there,
consider it translated down here.
John
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| User: "edwin" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 10:01:35 PM |
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Igor wrote:
edwin wrote:
malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
I wholly agree with you. The process of doing it is quite easy...the
problem is the conventional theory disagrees with it. This is the
reason why science in this area does not progress.
Shows what you think you know. Conventional theory also agrees with
this. Two oppositely spinning electrons are slightly attracted to each
other, so they pair up. Two parallel spinning electrons are all the
more repulsed. That stuff about them becoming neutrons is just more
nonsense, however.
You just revealed your level of thinking. Are we talking about two
electrons? LOL!
Of course, it's nonsense for two electrons to become neutron.
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| User: "" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
16 Nov 2006 04:45:24 AM |
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edwin wrote:
Igor wrote:
edwin wrote:
malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
I wholly agree with you. The process of doing it is quite easy...the
problem is the conventional theory disagrees with it. This is the
reason why science in this area does not progress.
Shows what you think you know. Conventional theory also agrees with
this. Two oppositely spinning electrons are slightly attracted to each
other, so they pair up. Two parallel spinning electrons are all the
more repulsed. That stuff about them becoming neutrons is just more
nonsense, however.
You just revealed your level of thinking. Are we talking about two
electrons? LOL!
Of course, it's nonsense for two electrons to become neutron.
I think Igor just needs to read a little more carefully, starting with
the Subject line:
"Re: What keeps an electron from being "absorbed" by a proton?"
Tom Davidson
Richmond, VA
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| User: "Igor" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
16 Nov 2006 10:26:49 AM |
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edwin wrote:
Igor wrote:
edwin wrote:
malibu wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
According to the Galaxy Model
http://users.accesscomm.ca/john
it is spin that keeps them apart.
Spin two opposite charges the same way,
and they stay apart.
Spin them opposite ways and they become
neutrons.
John
I wholly agree with you. The process of doing it is quite easy...the
problem is the conventional theory disagrees with it. This is the
reason why science in this area does not progress.
Shows what you think you know. Conventional theory also agrees with
this. Two oppositely spinning electrons are slightly attracted to each
other, so they pair up. Two parallel spinning electrons are all the
more repulsed. That stuff about them becoming neutrons is just more
nonsense, however.
You just revealed your level of thinking. Are we talking about two
electrons? LOL!
Of course, it's nonsense for two electrons to become neutron.
Right. A Neutron is made of two downs and an up. But spin has nothing
to do with how they end up that way. It's QCD.
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| User: "" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 06:34:55 PM |
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Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
Neutrons are unstable and 'decay' rapidly into a proton and an
electron:
http://en.wikipedia.org/wiki/Neutron#Stability
A neutron freshly formed by the absorbtion of an electron by a proton
is in an 'excited' (highly energetic) state, and will decay even
faster.
Bottom line: the electron and the proton are more stable when separated
Tom Davidson
Richmond, VA
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| User: "malibu" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
16 Nov 2006 09:23:18 AM |
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wrote:
Chris wrote:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
Neutrons are unstable and 'decay' rapidly into a proton and an
electron:
http://en.wikipedia.org/wiki/Neutron#Stability
A neutron freshly formed by the absorbtion of an electron by a proton
is in an 'excited' (highly energetic) state, and will decay even
faster.
Bottom line: the electron and the proton are more stable when separated
Unless they are sandwiched between other nuclear
participants in a way beneficial to all.
As a buffer between two protons that would
otherwise repel each other too much, bringing
them to a distance where their common spin
over-rides the electrical repulsion.
John
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| User: "" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
17 Nov 2006 01:47:08 AM |
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malibu wrote:
Unless they are sandwiched between other nuclear
participants in a way beneficial to all.
As a buffer between two protons that would
otherwise repel each other too much, bringing
them to a distance where their common spin
over-rides the electrical repulsion.
Your post is not sufficiently specific.
Are you talking about a proton and an electron with a 'common spin' as
a 'buffer' between two protons, or are you trying to describe two
electrons with a 'common spin' as a 'buffer' between two protons? Which
particles have a 'common spin'? Do you realize that spin-spin
interaction between two particles the spins of which have the same
orientation is a *repulsion*?
BTW, the word 'buffer' in physical chemistry has a very specific
meaning distinct from that it migh have in baking (as the stuffing in a
sandwich cookie) or in railroading. In physical chemistry a 'buffer'
in a substance added to an aqueous solution to reduce the sensitivity
of the solution to changes in pH from the addition of other materials.
Your comprehension and communication skills would benefit from mastery
of the vocabulary.
Tom Davidson
Richmond, VA
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| User: "malibu" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
17 Nov 2006 09:37:02 AM |
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wrote:
malibu wrote:
Unless they are sandwiched between other nuclear
participants in a way beneficial to all.
As a buffer between two protons that would
otherwise repel each other too much, bringing
them to a distance where their common spin
over-rides the electrical repulsion.
Your post is not sufficiently specific.
Are you talking about a proton and an electron with a 'common spin' as
a 'buffer' between two protons, or are you trying to describe two
electrons with a 'common spin' as a 'buffer' between two protons?
Actually, both, kinda. :-)
The electron and proton that have the same spin
share a line, and attract each other electrically along
that line while repelling each other magnetically
along that line. Thus the electron keeps a certain distance
(as they *face* each other).
But continue that line of same-spin *to the other side* of the center
of the
atom to another proton and another electron doing the same
thing, and since the protons are at the center, the second electron
and the second proton are both facing the other way, but still
within this line of same-spin. So both the second proton and
the second electron are inherently different from the first
ones because *they have opposite spin*.
Now you can take one of these oppositely-spinning
electrons and *back* it right up to a proton on the
other side and they will attract both magnetically and
electrically while turning in the same line, so you can
put them right next to each other. The only problem
is, the electron will disagree about where center is,
because it has its back to the proton, so unless it's
contained, it just moves away off the end of the line
and your neutron separates.
So you put two of these back-to-front (spooning)
proton-electron pairs (neutrons) in between your two
protons to stabilize them so the protons don't push each
other away too much
And you're good...................
John
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| User: "malibu" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
17 Nov 2006 07:55:06 AM |
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wrote:
malibu wrote:
Unless they are sandwiched between other nuclear
participants in a way beneficial to all.
As a buffer between two protons that would
otherwise repel each other too much, bringing
them to a distance where their common spin
over-rides the electrical repulsion.
Your post is not sufficiently specific.
Are you talking about a proton and an electron with a 'common spin' as
a 'buffer' between two protons, or are you trying to describe two
electrons with a 'common spin' as a 'buffer' between two protons? Which
particles have a 'common spin'? Do you realize that spin-spin
interaction between two particles the spins of which have the same
orientation is a *repulsion*?
BTW, the word 'buffer' in physical chemistry has a very specific
meaning distinct from that it migh have in baking (as the stuffing in a
sandwich cookie) or in railroading. In physical chemistry a 'buffer'
in a substance added to an aqueous solution to reduce the sensitivity
of the solution to changes in pH from the addition of other materials.
Your comprehension and communication skills would benefit from mastery
of the vocabulary.
Actually, one would need *two* proton-electron pairs between
two protons.
I am using words to create pictures.
If any of the words isn't completely conforming
to its accepted meaning according to whatever arcane
rules by whatever pseudoscience, well, 'tant pis'.
Look at the big picture and use your brain.
Nit-picking ain't gonna get you back to Kansas, Alice.
John
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| User: "" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
14 Nov 2006 11:39:30 PM |
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In article <1163565476.307920.126080@f16g2000cwb.googlegroups.com>, "Chris" <chris@chrismaness.com> writes:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
As you say, "in some favorable circumstances". First of all, in order
for the reaction to happen, it must be energetically possible.
Meaning, the final state, with one more neutron and one less proton in
the nucleus, as well as a missing electron, must have lower energy
than the initial one. This can only occur in nuclei with a
significant deficiency of neutrons. If you've such situation then
yes, the process above is possible (see K-capture) and it competes
with a beta+ decay.
As to why, even then, it doesn't happen fast, well, it is not for
nothing that it is called "weak interaction".
Mati Meron | "When you argue with a fool,
meron@cars.uchicago.edu | chances are he is doing just the same"
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| User: "Chris" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 09:25:04 AM |
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wrote:
In article <1163565476.307920.126080@f16g2000cwb.googlegroups.com>, "Chris" <chris@chrismaness.com> writes:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
As you say, "in some favorable circumstances". First of all, in order
for the reaction to happen, it must be energetically possible.
Meaning, the final state, with one more neutron and one less proton in
the nucleus, as well as a missing electron, must have lower energy
than the initial one. This can only occur in nuclei with a
significant deficiency of neutrons. If you've such situation then
yes, the process above is possible (see K-capture) and it competes
with a beta+ decay.
As to why, even then, it doesn't happen fast, well, it is not for
nothing that it is called "weak interaction".
Mati Meron | "When you argue with a fool,
meron@cars.uchicago.edu | chances are he is doing just the same"
What forces are in play that make the capture either favorable or not.
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| User: "" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 10:55:17 AM |
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In article <1163604303.764258.4340@h54g2000cwb.googlegroups.com>, "Chris" <chris@chrismaness.com> writes:
mmeron@cars3.uchicago.edu wrote:
In article <1163565476.307920.126080@f16g2000cwb.googlegroups.com>, "Chris" <chris@chrismaness.com> writes:
If the probability density of the electron is non zero inside the
nucleus, what keeps it from being spontaneously absorbed by the proton
to form a neutron? (I realize that this does occur in some favorable
circumstances, but it is not the general rule.)
As you say, "in some favorable circumstances". First of all, in order
for the reaction to happen, it must be energetically possible.
Meaning, the final state, with one more neutron and one less proton in
the nucleus, as well as a missing electron, must have lower energy
than the initial one. This can only occur in nuclei with a
significant deficiency of neutrons. If you've such situation then
yes, the process above is possible (see K-capture) and it competes
with a beta+ decay.
As to why, even then, it doesn't happen fast, well, it is not for
nothing that it is called "weak interaction".
Mati Meron | "When you argue with a fool,
meron@cars.uchicago.edu | chances are he is doing just the same"
What forces are in play that make the capture either favorable or not.
The weak interaction is governing the actual capture process, but the
balance of energy on which the probability of the interaction hinges
is established by the strong, weak and EM interations jointly.
Mati Meron | "When you argue with a fool,
meron@cars.uchicago.edu | chances are he is doing just the same"
.
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| User: "tj Frazir" |
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| Title: Re: What keeps an electron from being "absorbed" by a proton? |
15 Nov 2006 11:19:45 PM |
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The mass of the proton is 10,000 times the electron.
The photon cant speed up or slow down and lacks the mass to fall in
.
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