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The prototype Adams Probe 16 AB/4 on show at the 2014 classic car and sportscar show at the NEC in Birmingham .
Here the higher resolution probe run (with lower resolution probe in parallel but in a lead castle) is shifted up relative to the lower trace run where both probes were nose to nose with the TG-77 Cs-137 source between. Very tight but not perfect energy tracking.
No attempt was made to optimize geometry. With probe(s) sitting flat on a painted wood workbench surface there is a lot of gamma backscattering going on that compromises the peak to Compton ratio. These probes can do better suspended in free air with a minimally supported source.
Since my hardware MCA has coincidence enable and anti-coincidence inhibit functions I am thinking of additional preamps to allow various direction finding and active shielding experiments utilizing other similar and not so similar scintillation probes on hand.
Sensors that measure temperature, salinity, dissolved oxygen, pH, and Chlorophyll levels are used to monitor the waters of Narragansett Bay. Photo Credit: Heather Stoffel
universal logic probe using the popular LM393 and NE555 ICs. All the details including schematic, PCB design files and CAD files are available at jayakody2000lk.blogspot.com/2021/08/universal-logic-probe...