Re: switchable neutron sources

[jamesm@cnsc-ccsn.gc.ca]

     You might consider an accelerator type neutron generator - there are a 
     couple of companies making them, e.g. MF Physics in Colorado Springs.  
     Their ohone # is (719) 598-2599.  
     They are small and typically have outputs of 10E8 n/sec @ 14MeV.
     
     Mike James


______________________________ Reply Separator _________________________________
Subject: switchable neutron sources 
Author:  <radsafe@romulus.ehs.uiuc.edu> at INTERNET
Date:    2000-10-31 14:44


     
     
Dear radsafers,
     
I would appreciate any information on "switchable" neutron 
sources (availability, references, etc). Such a source would 
be a special version of the usual Am-Be, Ra-Be, Pu-B, ... 
setup, in which the alpha emitter and Be (or B) are not mixed, 
but separated, so that the source can be switched on and off 
by simply varying the distance of the two components.
     
I assume that such sources would have relatively low 
emission rates, due to the inefficiencies in geometry. 
However, they would be very useful in applications where 
portability is a major constraint, since it would eliminate 
the need for neutron shielding.
     
It was suggested to me that these sources were built somewhere, 
perhaps at one of the national labs.
Thank you in advance for any hints and pointers.
     
Vashek Vylet
     
----------------------------------------------------------- 
Vaclav "Vashek" Vylet, Ph.D.            Phone: 919-684-2194 
OESO/DUMC Box 3155                        Fax: 919-684-2422 
Duke University                         pager: 919-970-1224 
Durham, NC 27710, USA         e-mail: vashek.vylet@duke.edu
     
     
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