Interesting paper on Neutron Measurement Techniques

This area is for discussions involving any fusion related radiation metrology issues. Neutrons are the key signature of fusion, but other radiations are of interest to the amateur fusioneer as well.
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Justin Fozzard
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Interesting paper on Neutron Measurement Techniques

Post by Justin Fozzard » Wed Oct 31, 2018 11:20 am

Here is a link to a paper on measuring the neutron flux around high energy x-ray machines. It discusses the use of indium and gold foil activation methods and also a method of using phosphorous pentoxide either as a powder or in solution along with a scintillation probe:

https://aapm.org/pubs/reports/RPT_19.pdf

They are dealing with high flux rates but the methods and analysis they present may be useful for our experiments.


Justin Fozzard

Justin Fozzard
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Joined: Thu Aug 24, 2017 11:11 am
Real name: Justin Fozzard
Location: Essex, England

Re: Interesting paper on Neutron Measurement Techniques

Post by Justin Fozzard » Wed Oct 31, 2018 12:09 pm

Another very interesting paper, this time a doctoral thesis by D.M.Bibby on 14MeV neutron production and detection:

https://dspace.lboro.ac.uk/dspace-jspui ... -Bibby.pdf

He discusses the construction details of a beam on target neutron source and various activation methods of neutron detection.

Justin Fozzard

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Richard Hull
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Re: Interesting paper on Neutron Measurement Techniques

Post by Richard Hull » Wed Oct 31, 2018 7:09 pm

These are (Gamma, n) neutron production systems. The gamma/x-ray needed for this reaction are far beyond our fusor outputs. The fluxes are also huge. There are no real new ideas here in neutron detection.

While the x-ray to neutron ratios may be similar between the systems noted and our fusor, the neutron flux off the systems are vastly different.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

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