Hello Jan and all the others,Hello Markus,sounds veeeeery strange to me.
yes, this article is quite extraordinary, but PIN-Diodes ARE INDEED used to detect radiation. I don't know whether they are directly coated by a szintillation substance. The author replaced the glass window with a 10� Al-coated foil to keep the light outside (but I don't know wheter this foil also acts as a szintillatior). I would really like to give this circuit a try before looking for such a special detection diode.
Further researches about the author braught up the following results: The article was published in "Electronics Designer's Casebook No.3 for the period Feb 16, 1978 to Jan 4, 1979". The author doesn't work for the indicated institute in poland any more, not quite a surprise. So I can't contact him directly.
But this tells us that the diodes are at least 25 years old and probably of eastern europe type (former CCCP I think, but not sure). So if anyone of the list members has an old data book on the shelf, please take a look ...
Today's photodiodes should have a higher performance/sensitivity, so would a general purpose type (which one?) be ok for a simple test of the circuit?
Best Regards
Markus
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Author: Markus Rohe
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