Gamma Spectrometry Forum

so, my son and me have finished that project: adapter is ready for the new detector, filled with lead (2.5kg) and copper (1kg). Also did some "fingers" and marinelli beakers for it. But of course there is a downside: previously I had 89% background reduction in that lead castle. Now with t...

Great comparison! What FWHM has your GS2020CsI ?

So finally I built an adapter for the soon arriving GS1515-CsI detector. The lid has an inner compartment I need to fill with copper flakes and lead BBs + epoxy. The lid has also a ring with a holder for the GS-MAX-8000, I hope the specified dimensions are right :-) What I still miss is a way to als...

Thank you Paulo. There are for sure several shortcomings here, and mistakes I did. I have been roasted quite heavily on reddit with my post, as the argument was, that you find Cs137 almost anywhere on the planet, and that this finding is not correlated to Chernobyl at all. I guess that argument came...

Detection of Chernobyl-Derived 137Cs in Forest Soils near Rosenheim Objective: The aim of this small experiment was to investigate the presence of radioactive caesium-137 originating from the Chernobyl fallout in undisturbed forest soil. The investigation was conducted by taking soil samples and per...

Thank you Rob! .....okay, my fault (me beginner). Now I get it, thank you, it seems like the U235 content differs from older to newer glasses. The X-Ray at 19-20keV just becomes so big with larger U235 content that you hardly can see sometimes that small peak at 32keV. So that one actually stays the...

Hello everybody, I don't know if this makes sense at all, but maybe you experienced folks may know: I have here several historic Uranium glasses and some modern ones (made recently). Thing is that all spectra from historic glasses look rather similar and also the newer ones I have look similar among...

Hi Rob, great ideas, thank you for sharing that. I will consider that in the next projects to come up.With Uranium ore I am still quite hesitating, as I fear contamination. We bought uranium glass, as that is easy to handle and no fear of contamination. What we have been trying to achieve is the det...

During Christmas, I bought a Measall KC761 gamma spectrometer—one of those small handheld devices that are just on the edge of being affordable. I’ve been doing some testing with it (searching for fallout Cs¹³⁷, for example), and soon came the wish to get better spectra by shielding the device from ...

Hello, my name is Nicolai, I am 48 years old, married - two kids (two boys), and I am a typical nerd-dad. We live here south of of Germany, in Bavaria, near Rosenheim. The last years I have been doing a lot of astrophotography and since half a year I have been diving into the field of radiation and ...