@vikxin no but i have been eyeing one. those are CsI or GAGG(Ce) (the new ones) but don't have the best resolution or stopping power, and i've learned are also prone to a lot of backscatter noise in the spectrum just due to the small size of the thing and closeness of readout electronics
i have a, iirc, 1.25" NaI(Tl) on a 3" PMT (bit excessive) on an HP preamp base, and then either a Canberra Model 35+ MCA or a Canberra 556 AIM MCA system plus three other bins of miscellaneous signal processing legos. the sample, scintillator, PMT, and preamp live inside a graded Al-Pb pig
i haven't thrown a Ba133m line at it but iirc it kinda ballparks in that 7% FWHM resolution range. its fun. it does not fit in my pocket
@vikxin well sure but i mean you do possess one way to find out
marble countertop, container of salt substitute, operating HEPA air filter; pick your NORM
@vikxin yeah the filter has to be running several hours, your house has to be pretty sealed up, and some areas simply don't have high radon. which is fortunate really. get your CO2 sensor up for a while and try again
i can pick up the ∆CPM on a metal β/γ GM probes so that little guy surely can under the right conditions
@vikxin lucky
my house has shot past 4pCi/L on cold still winter days where nobody's leaving the house. this ironically is usually when everyone is already sick
@vikxin oh dear
yeah that's in that "do something about it" range. like the local health department might have guidelines or maybe even tax rebates for radon fan retrofits
@vikxin radon fan installations are like a thousand bucks and if they intend to sell their home ever it'll need one installed anyways
there is no safe exposure level to radon yippee