[ fusor ] - Neutron - Radiation detection
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Subject   Re: Iodine Activation
Posted by Carl Willis on 2003-02-22 13:48
Hi Larry,

Thanks for the suggestions. Have a few questions though. When you mention bismuth, do you mean the prompt gamma capture peaks or the gammas from decaying Bi-210? Unfortunately bismuth has an abysmally low cross-section and resonance integral.

About the neutron multiplication: my understanding (and I have not looked into this thoroughly) is that these reactions [ (n, 2n) etc.] require very high energy neutrons and have very low cross sections. If anything were to amplify the neutron emission from the fusor significantly, it would be a fissile material like U-235. Please correct me if I'm wrong.

Sodium and chlorine are worth a try simply because they are so common and readily available.

I'm not expecting to see much from strontium due to its low cross-section and the fact that Sr-89 has a very long half life. I do have strontium nitrate for making fireworks but I don't think it's going to get any runtime on the fusor until the rest of my high-priority linup gets its turn.

Cadmium is already on the top of my list for prompt gamma emissions. Here is the rest of the current lineup:

Gold
Cobalt
Silver
Uranium
Aluminum...still at it
Tungsten and Vanadium if I can find any significant amounts of either.

Please let me know if you can think of any more good stuff to toss on the neutron barbeque!

-Carl

Current as of Sep 06, 2010 @ 07:06:41 AM CDT
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