> I'm looking for a replacement of the PIN-photodiode BPDP-30 resp. > HP5082-4203. I found a circuit on the web > > <http://www.ibutton.com/images/wideband.pdf> > > where the glass cover of this photodiode is removed and the blank diode > surface is 'misused' for detecting radiation impulses. In contrast to > the circuit I'm only interested in the pulse if one decay event > (alpha-particle in my application) occurs. Certaily the circuit will > only work when all other radiation sources (light, IR, ...) are eliminated.
Hello Markus, sounds veeeeery strange to me. I do only know about PIN diodes working together with Szintillation materials. The latter produce visible light when being hit by nuclear radiation. This light is then being detected with the photodiode. I never ever heard of direct use of photodiodes. Remember, alpha-rays are he4-cores and beta rays are electrons. Only gamma are actually photons and now, off the cuff, I do not understand how alpha and beta particles should produce this non- energy related effect in the diode crystal. Maybe you can try to contact the author of this article.. if it really works, it would be a real easy and simple radiation detector. Please keep me updated on your results. Low noise OpAmps: check www.analog.com mit freundlichen Gruessen---best regards Frag'Jan Zuerst -----Ask Jan First Jan Philipp Wuesten Elektronik Rodauer Strasse 38 D- 64372 Ober Ramstadt, Germany Phone: +49-6154-575556 Fax : +49-6154-575557 <http://www.die-wuestens.de> (German and English) mail to <[EMAIL PROTECTED]> or <[EMAIL PROTECTED]> -- Author: Jan Wuesten INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
