>to its reverse breakdown potential. The area covered by the pn junction in
>the diode determines the efficiency of the detector. The glass/plastic
>surrounding the diode will attenuate alphas and betas much more than=
 gamma:

        Maybe an old 2N3055 or TO-3 like transistor with the cover chopped off=
 would help?




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Alexandre Souza
taito@terra.com.br
http://planeta.terra.com.br/lazer/pinball/

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