Search found 143 matches

by Peter-1
28 Apr 2020, 00:54
Forum: Spectrum
Topic: Protactinium
Replies: 5
Views: 774

Re: Protactinium

hello Steven, if I understand you correctly, it is a multiplication of the number of impulses by their energy. Since I am not familiar with PRA, I wrote a small program with which I can achieve the increase in higher energies. Is the behavior shown in the example correct? 2020_04-Beispiel.png Greeti...
by Peter-1
20 Apr 2020, 01:33
Forum: General discussion
Topic: UO2 ? spectrum
Replies: 5
Views: 920

Re: U238 - U235 ?

I tried to compare two samples. It is noticeable that with almost the same number of pulses at Th234, the number of pulses at U235 differs well. I can imagine that the uranium glass contains a depleted uranium. However, uranium was not depleted in Gottow in the uranium project from World War II. Can...
by Peter-1
18 Apr 2020, 00:54
Forum: Spectrum
Topic: Protactinium
Replies: 5
Views: 774

Protactinium

The goal was to better recognize Protactinium. In my small sample of UO2 only 2 lines were visible, which I identified as Pa234. Thorium's strong lines dominated the diagram. The idea was to use a filter to weaken the low energies and thus better recognize the weak lines in the higher energy range. ...
by Peter-1
17 Apr 2020, 00:54
Forum: General discussion
Topic: UO2 ? spectrum
Replies: 5
Views: 920

Re: UO2 ? spectrum

I have no indication of the age of UO2, but i suspect that it came from a laboratory around 1970. The soil sample from gottow is from 1940-1945. The accident is said to have been there in 1942. The uranium for the tests comes from the Auergesellschaft and Degussa. The GG17 colored glass from Schott ...
by Peter-1
14 Apr 2020, 19:05
Forum: General discussion
Topic: UO2 ? spectrum
Replies: 5
Views: 920

UO2 ? spectrum

I'm looking for an explanation. In 3 different samples, which always contain UO2, a very unusual picture was created in one case. The sample with pure UO2 shows a much smaller peak at 63.3 keV than the other two samples. My question: how can you explain that? Many of my uranium glasses show a spectr...
by Peter-1
06 Apr 2020, 19:08
Forum: Spectrum
Topic: uranium glass spectrum
Replies: 2
Views: 610

uranium glass spectrum

A few years ago i bought this bottle in a small market. Uranglas-01.jpg It is an old bottle from around 1880, made in Vienna from a perfumery. Now i wanted to know if there are any deviations from other uranium glasses. Uranglas-Flakon.jpg I have found no deviations from other glasses. Now the quest...
by Peter-1
05 Apr 2020, 00:41
Forum: Spectrum
Topic: resolution ?
Replies: 2
Views: 540

Re: resolution ?

hello Steven,

I found an old paper from 2016. That's what i was looking for .
http://www.isca.in/MATERIAL_SCI/Archive ... 16-011.pdf
I put the FWHM values ​​in a diagram.
NaI-FWHM.jpg
Peter
by Peter-1
03 Apr 2020, 02:38
Forum: Spectrum
Topic: resolution ?
Replies: 2
Views: 540

resolution ?

hello,
just a small question:
how is the resolution assessed and evaluated? Good, normal or bad?
Cs137-K40.jpg
Szintillator-02.jpg
Szintillator-02.jpg (96 KiB) Viewed 539 times
Peter
by Peter-1
31 Mar 2020, 21:15
Forum: Spectrum
Topic: Trinitite – The Quest for Europium and More: A 17 Day Gamma Spectrum
Replies: 22
Views: 2237

Re: Trinitite – The Quest for Europium and More: A 17 Day Gamma Spectrum

hello Massimo,
I have now also tried to find the peak at 1408 keV. I'm not sure if it's the Eu 152 line. Unfortunately only a measuring time of 11 hours. What do you think about the measurement ?
2020_03_30-Trinitit-C.jpg
Peter
by Peter-1
27 Mar 2020, 03:56
Forum: General discussion
Topic: Trinitite @ 1945
Replies: 1
Views: 554

Trinitite @ 1945

hello, I make an attempt to calculate the activity of Trinitite at the time it was created in 1945. As a starting point i measured a sample of trinitite with 4 grams. My geiger counter showed 0.13 µSv/h as the background and an activity of 0.3 µSv/h at a distance of 3cm with trinitite. 0.3 µSv/h - 0...