Radiation Detector

MrChips

Joined Oct 2, 2009
34,717
Alpha, beta, and gamma are different types of radiation. You cannot detected them with a single type of detector.
You cannot detect Am-241.
 

nsaspook

Joined Aug 27, 2009
16,275
https://www.acq.osd.mil/ncbdp/narp/Radiation_Data/Radiation_Detection_and_Measurement.html
c. In demonstrations conducted in the laboratory, a sealed alpha source (Am‑241) was monitored with a well maintained AN/PDR-60 alpha probe and meter. Dust and water were sprinkled onto the source and changes noted. It was found that a drop of water, a heavy piece of lint, or a single thickness of tissue paper totally eliminated all readings. A light spray of water, comparable to a light dew, reduced readings by 40 to 50 percent. A layer of dust that was just visible on the shiny source had minimal effect on the count rate; however, a dust level that was only thick enough to show finger tracks reduced readings by 25 percent. These simple demonstrations reinforced the knowledge that detecting alpha particles in any but the most ideal situations is most problematic. The leaching or settling of contaminants into a grassy area or the dust stirred up by vehicular traffic on paved areas significantly decreases or eliminates alpha detection.
https://man.fas.org/dod-101/sys/land/an-pdr-77.htm
 

SamR

Joined Mar 19, 2019
5,478
Detect them? They are almost constantly there at some level. Sure this isn't what you want?
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And Fnirsi is a maker of some pretty good low end electronic testing equipment. You kinda get what you pay for though... It's not something you send in for regular certified calibration against a known standard by a metrology lab however.
 
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