Search found 161 matches

by Peter-1
30 Nov 2020, 23:33
Forum: Spectrum
Topic: Calibrate the energy
Replies: 4
Views: 94

Re: Calibrate the energy

Thank you for the information. now i have also seen the law of decay in a large list.
Co56.jpg
Peter
by Peter-1
30 Nov 2020, 00:43
Forum: Spectrum
Topic: Calibrate the energy
Replies: 4
Views: 94

Calibrate the energy

Hello,
I like to use a thorium sample to calibrate the energy in my program. Unfortunately, this only works up to 2614 keV. My question: is there still an isotope that can be used in even higher energy ranges?
regards
Peter
by Peter-1
05 Nov 2020, 03:45
Forum: Spectrum
Topic: Uranium-radium decay
Replies: 3
Views: 227

Re: Uranium-radium decay

hello Mike,

my first spectra of soil samples were in Sept. 25, 2019. The title: soil sample

Peter
by Peter-1
04 Nov 2020, 02:28
Forum: Spectrum
Topic: Uranium-radium decay
Replies: 3
Views: 227

Uranium-radium decay

I am looking for help and explanation! During some measurements of the spectrum of uranium glass, uranium compounds and the soil sample from Gottow, I made an observation that I couldn't explain. The line at 63.3 keV for Th234 varies greatly. Both in the soil sample and in a uranium glass from Schot...
by Peter-1
02 Nov 2020, 04:23
Forum: Spectrum
Topic: Potassium Chloride Salt - Radioactive Salt
Replies: 8
Views: 607

Re: Potassium Chloride Salt - Radioactive Salt

I use a very pure salt from a pharmacy. 99.9% according to analysis. So I am sure that I really only have potassium in the sample. The spectrum shown was created with this salt. Background was 16.7 CPS, with KCl it was 32.7 CPS.
2020_10_28-KCl.png
2020_10_28-KCl.png (95.99 KiB) Viewed 368 times
Peter
by Peter-1
19 Oct 2020, 23:17
Forum: Spectrum
Topic: Curit from the Congo
Replies: 3
Views: 411

Re: Curit from the Congo

Hello Massimo, of course I saved the values. The total measurement time was 4.37 hours. During this time it was 395.9 CPS in total. The background rate in my system is only 16.5 CPS. The net rate of the probe is 379.4 CPS. From a measurement with a Geiger counter and taking into account the distance...
by Peter-1
06 Oct 2020, 23:28
Forum: Spectrum
Topic: Curit from the Congo
Replies: 3
Views: 411

Curit from the Congo

I received a small piece of curite - a uranium mineral - from a mineral collector. Many uranium minerals such as uranocircite or torbernite are green in color. Not so with this mineral. Bright orange-red ! A uranium-lead compound. Pb3[(UO2)4|O4|(OH)3]2 ·2H2O Of course, there are no surprises with th...
by Peter-1
03 Sep 2020, 20:04
Forum: General discussion
Topic: old Units
Replies: 3
Views: 1122

Re: old Units

I do not want to know the Bq / liter, but rather whether it is possible to calculate the activity of the source that generates this ME units.
by Peter-1
03 Sep 2020, 19:31
Forum: General discussion
Topic: old Units
Replies: 3
Views: 1122

old Units

hello, Who has an idea how I can convert a radiation source with radium from an old emanation apparatus with an indication of 25000 ME (Mache) into a current unit? I don't mean the familiar conversion. 1 ME = 3,64 Eman = 3,64×10−10 Ci/l = 13,4545 Bq/l What I am looking for is the activity of the sou...
by Peter-1
21 Aug 2020, 19:36
Forum: Detectors
Topic: Building a LaBr3:Ce Gamma Spectrometer
Replies: 13
Views: 1769

Re: Building a LaBr3:Ce Gamma Spectrometer

Hello, I am impressed how good the resolution is. But now I also wanted to check whether the two lines can be resolved with my NaI crystal. In order to suppress the area of ​​low energy, I placed a copper plate with a thickness of 21mm in front of the NaI crystal 2"x 2". I used ThF4 from Oerlikon-Ba...