In reply to Axil Axil's message of Sat, 6 Oct 2012 17:42:14 -0400: Hi, [snip] > Has anyone run across a how to use CR39 for dummies type document or as >an alternitve, a experimental procedure describing in detail the use CR39 >to test for neutrons.
AFAIK fast neutrons are detected by the fact that they occasionally break a C12 nucleus into 3 alpha particles. It is the three alpha particles that produce three cone shaped tracks in the CR39, with a common origin. Note that only charged particles create tracks, because the tracks are formed from chemical changes in the CR39 caused by the CR39 molecules being ionized, and only energetic photons and charged particles cause ionization (not neutral particles). Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
