GQ Electronics Technical Support Forum


GQ Electronics Technical Support Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 GQ Electronics Forums
 2.GQ Geiger Muller Counter
 Radioactive gas mantle and storage
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

SolarSurveyMonitor

Mexico
13 Posts

Posted - 04/29/2019 :  17:33:24  Show Profile  Reply with Quote
It is known that some gas mantles are radioactive. I managed to found some of them, however, as I searched lately, those are doped with Thorium dioxide. The mantles are in a sealed plastic bag, and with GMC-300E+ 4.50 measures 660 to 780 average CPM. If I separate the counter, more than 2 or 3 cm, it decreases drastically.

Few doubts I have:

1. With plastic bag, filters out all alpha particles?, next
2. With same above, but now wrapped with aluminum foil, should block beta particles right?, and
3. All above plus a steel sheet of 0.8 ~ 1.0 mm, must block alpha and beta particles and only pass gamma rays?

Should I still keep them in their bags or it is needed more shielding?

I will provide photos if needed, any foreword is welcome meanwhile.
Reply #1

EmfDev

647 Posts

Posted - 04/30/2019 :  10:27:34  Show Profile  Reply with Quote
1. Yes.
2. The alpha should still be blocked, but beta depends.
3. Yes.

I think you can keep them with the plastic bag but don't put them close to you or someone else.
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
GQ Electronics Technical Support Forum © Copyright since 2011 Go To Top Of Page
Generated in 0.14 sec. Snitz Forums 2000