Search found 22 matches

by Cosmic
05 Apr 2020, 21:35
Forum: Shielding
Topic: 3D printable Marinelli beaker
Replies: 1
Views: 758

3D printable Marinelli beaker

Hi all, for those of you, who have access to a 3D printer, you can print your own Marinelli beakers. The design goal was to have marinelli geometry available even for small sample volumes, in the case there is only a small amount of sample material available or there is not much space inside the shi...
by Cosmic
02 Feb 2020, 19:56
Forum: Spectrum
Topic: Trinitite with Graded Shield
Replies: 8
Views: 1957

Re: Trinitite with Graded Shield

Hi Massimo, Surprisingly the less active (7 CPS versus 16 CPS of the other one) is the most interesting, Eu152 peaks are so strong (compared to the other) I couldn't believe my eyes. I mean, it's expected to find Eu152 in Trinitite samples, but in my previous attempts with five samples from two diff...
by Cosmic
27 Jan 2020, 21:36
Forum: General discussion
Topic: Characterizing isotopic composition of post-accident/incident fallout
Replies: 2
Views: 1153

Re: Characterizing isotopic composition of post-accident/incident fallout

Hi Julie (?), in a post-apocalyptic scenario as you described, I agree with Steven, radiation won't be your biggest problem. And figuring out what isotopes are in the fallout will not help very much, maybe you can identify some isotopes with short half lives (i.e. in the range of a few days) and get...
by Cosmic
19 Jan 2020, 07:21
Forum: Introductions >> Start Here !
Topic: Greetings from Germany
Replies: 4
Views: 1360

Re: Greetings from Germany

Hi Marcel,

your "radioactivity history" sounds similar to mine.
Greetings from Erlangen, Germany, and welcome to the forum!
by Cosmic
11 Jan 2020, 19:26
Forum: Detectors
Topic: Mirion PDS 100G, Spectrometric Personal Radiation Detector
Replies: 104
Views: 16751

Re: Mirion PDS 100G, Spectrometric Personal Radiation Detector

Hi Taray,
Taray wrote:
11 Jan 2020, 00:06
Oops
Just realize my mistake
There is no 609 thorium peak
Need to take another look ..
Taray
Seems you're looking for the peak at 583keV from Tl208 decay which is visible in your spectrum.
by Cosmic
28 Dec 2019, 20:46
Forum: The lounge
Topic: Forum login, cookies
Replies: 1
Views: 1091

Re: Forum login, cookies

Hi Martin, I'm not Steven ... Every time I visit the forum, it forces me to login again, even though I set to remember the login data. Also, during longer visits, it seems that the login expires. Could you please check the configuration and persistence of your forum cookies if they are properly set?...
by Cosmic
30 Nov 2019, 18:37
Forum: Spectrum
Topic: The Stratospheric Thread - Radiation at Aircraft Altitude
Replies: 8
Views: 1323

Re: The Stratospheric Thread - Radiation at Aircraft Altitude

Hi Massimo,

thank you for this very informative and well prepared report!

I wonder if recording shorter spectra, say 5 to 15min, would reveal some differences in the spectra regarding altitude, latitute, day/night?
by Cosmic
09 Nov 2019, 21:34
Forum: Spectrum
Topic: The Compton edge, don't let it fool you!
Replies: 5
Views: 1576

Re: The Compton edge, don't let it fool you!

Hi Steven, thank you for this interesting post! I'd like to add that with Interspec (https://www.gammaspectacular.com/phpBB3/viewtopic.php?f=7&t=504) you don't need to do the calculation by hand, you can simply show "Feature Markers" like the compton edge and move it around through the spectrum so y...
by Cosmic
03 Nov 2019, 00:02
Forum: Detectors
Topic: Mirion PDS 100G, Spectrometric Personal Radiation Detector
Replies: 104
Views: 16751

Re: Mirion PDS 100G, Spectrometric Personal Radiation Detector

Hi Tom,

as I rember on the PC Bluetooth must be set to detectable/discoverable
by Cosmic
02 Nov 2019, 20:55
Forum: Detectors
Topic: Mirion PDS 100G, Spectrometric Personal Radiation Detector
Replies: 104
Views: 16751

Re: Mirion PDS 100G, Spectrometric Personal Radiation Detector

Hi Tom,

you have probably set the wrong port number in Bluetooth Settings.
You might look at the settings in the device manager which ports have been assigned to the bluetooth serial connection.
Unfortunately I currently haven't a Win 10 machine available to give you step by step instructions.