Gamma Spectrometry Forum

I use a thorium gas mantle or even better a hand full of polished Apatite mineral samples I bought from a shop near my house - they give a very good Thorium decay chain spectrum. I also have a bag of low salt which gives K-40. I do have some disk sources as well but I prefer the leave them in the le...

I just received the PDS-100G without software. Many thanks for all the info in your forum regarding this nice device. I would appreciate any help in obtaining the PDSmass Software. Thank you! Me too. I'd love a copy of PDSmass as well. I have a version which is very cut down and next to useless.

Hello Ipelupessy, Thanks. Yes looking at the original data - I think I mislabelled and meant to apply 'k-40,' to the peak immediately to the left. I think the peak I labelled k-40 is Ac-228 at 1588 KeV, and I see Bi-212 broadcasts on 1620 KeV and Ac-228 on 1630 KeV too, may be they are mixed in ther...

Thank's Svilen. I think I'll have another try see if I can get some more resolution - this run was about 2h hours. I'll do some reading up on sum peaks too.

A spectrum from Apatite. A local charms and trinkets shop in West Hampstead London also sells ‘healing’ stones that give off ‘energy’. I believe the proprietor to be sincere in her claims and have no wish to be snide about her beliefs but I was more curious about the tangible properties of the gemst...

Hello,

I introduced myself on the 6th of August this year. I have updated my signature.

Hello. One of my hobbies is collecting elements. I usually like safe transition metals but I have been branching out into rare earths, and so decided to put my Lutetium sample under the 2" CsI Scintillation detector. It clearly influences my PDS-100G monitor and in close proximity lifts the cou...

Greetings! My name is Matthew I am originally from the Newcastle in the North of England. I studied physics at University of Edinburgh, a city I lived in and loved for 20 odd years. I had my first encounter with a gamma ray spectrometer there. It was not long after Chernobyl so earth sampled from ne...