| Topic: |
Science > Physics |
| User: |
"Douglas Eagleson" |
| Date: |
10 Sep 2005 02:51:00 PM |
| Object: |
An LET Counter-novel design |
An LET proportional counter measures the charge deposited.
And in neutron counting the gamma background often
swamps the neutron spectra.
A design is given where the track is altered preferentially
to the high stopping power region of charged particle
tracks.
A high density is proportionally larger than the low density.
Implying an amplification preferentially.
A grid is sometimes used to cause the region of
nonlinearity. Small or short tracks will be rarely
traversing the grid while long tracks will pass through
and be a subtractable signal. Making the area outside the
grid having no signal from the hydrogen recoil,
| { I } |
| { I } |
| { I } |
the I denotes the center collector.
the { denotes the grid
the | denotes the wall.
A neutron/hydrogen recoil from the gas is the only means
of signal for neutrons.
A gamma signal may be caused by wall electron recoil.
A grid then measure the wall's contribution.
And the marginal increase is the reason for the
usage of this style of LET counter when neutrons are
the desired dose component.
A grid signal is collected to allow the discrimination.
And the loss of neutron recoil ionization amplification
is negligible because only the existence of the track is desired, in
order to discount. A very small potential is applied to the grid. It
is effectively at the wall potential for hydrogen tracks produced
inside the grid.
A novel design will be posted in the reply section.
My computer is unreliable again sorry.
Douglas Eagleson
Gaitherbsurg,MD USA
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| User: "Douglas Eagleson" |
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| Title: Re: An LET Counter-novel design |
10 Sep 2005 03:33:17 PM |
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A charge amplification will be measured.
Allowing inference independent of the assumed W value. An inference of
the fraction of energy released as opposed to collected.
A common method of W value inference is binding energy estimation.
And the true behavior of the force of electron production is to be
determined. An absolute atomic splitting force is inferrable in this
detector.
note: A TLD is a thermoluminescent dosimeter, a crystal that re-emitts
in relation to dose.
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| User: "Douglas Eagleson" |
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| Title: Re: An LET Counter-novel design |
10 Sep 2005 03:08:08 PM |
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A dose to the center collector is to be
measured. Meaning the ions collected cause the surface dose rate.
And this rate in relation to the dose to the gas is to alter the
signal.
A smaller grid is placed near the center collector surface. And the
signal while small is equal to the normal collected charge.
In fact the normal collector is to be utilized for inference of the
fraction of collect gass ions.
A change in potential is ussually used to estimate the degree of
collection. A doubling of the voltage should have the same charge
collected.
A dose is then calculated for the center collector.
And here the rate of gas ion emission is related to the potential. A
removal of the transform of gas ion collection to gas energy absorption
is the means of dose inference.
A W value in eV per ion pair is removed. And the potential for the
detector substituted.
And here the change in gas temperature is the cause of the energy
discrepancey. A dose to the gas causes the temperature to increase.
A defect is the increase in binding energy of the gas.
Read the last two sentences in predicate. A gas atom as a relation of
atomic forces must have its relative binding energy increase.
A slight several electron defect appears for each atom ionized. A
fractional binding energy change.
And here the defect itself is to be the means of high LET detection.
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| User: "Douglas Eagleson" |
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| Title: Re: An LET Counter-novel design |
10 Sep 2005 03:24:28 PM |
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A small set of TLD near the collector will allow the dose to the
collector to be inferred without relation to the charge collected.
And the relative dose determines the gas defect.
How that?
Yes, use neutron insisitive TLD.
A collector dose is to equal the gas doses.
And the small dose due to the 1Kv electron is to determine the fate of
the defect energy.
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| User: "Douglas Eagleson" |
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| Title: Re: An LET Counter-novel design |
10 Sep 2005 03:17:41 PM |
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And given the larger defect for neutron/hydrogen recoils the
temperature of the gas is lower for a given charge collected.
A fraction of the energy is to be located.
And the increase in relative binding energy is either temperature
defect measurable or not.
And so the detector is seen a novel binding energy experiment. A real
increase in atom mass in relation to the loss of electrons by
ionization is the contemporary vision.
..
And the reason for the increase appears the calculation of temperature
methodology
A W value of eV per ion pair must relate the total loss of binding
energy per electron.
And to test the W values is to take the
two particle detector and apply it.
A thermistor to measure the gas temperature is an emperial heat
induction inference. A very hard experiment.
A novel method was just presented using the
relative....computer crash sorry
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