Search found 222 matches

by Go-Figure
05 Apr 2021, 06:46
Forum: Spectrum
Topic: Uraninite from Piemonte - Sample 2
Replies: 2
Views: 219

Re: Uraninite from Piemonte - Sample 2

Massimo, I always enjoy reading your reports, so professional. Your spectra are also perfectly smooth, I guess this is because you are subtracting a very long 24 hour background spectrum. Thanks for sharing. Steven Yeah, I remember when doing a 6 hour measurement during the weekend felt like a very...
by Go-Figure
29 Mar 2021, 01:35
Forum: Spectrum
Topic: Uraninite from Piemonte - Sample 2
Replies: 2
Views: 219

Uraninite from Piemonte - Sample 2

Hello there, Here I am to report on the second Uraninite specimen from Valle Antrona, Piemonte, a northwestern region of Italy. You can read about the first one here https://www.gammaspectacular.com/phpBB3/viewtopic.php?f=5&t=904&sid=d641953981ca55ea62e696c85b3e0954 I took a while to post this becau...
by Go-Figure
27 Feb 2021, 00:47
Forum: Spectrum
Topic: Uraninite from Piemonte - Sample 1
Replies: 2
Views: 409

Re: Uraninite from Piemonte - Sample 1

Sesselmann wrote:
23 Feb 2021, 09:38
Massimo,

Nice mineral specimen and nicely documented experiment (as always).

Steven
Thanks Steven,
Yeah, I started with this one because it really looks good, although the other one is way hotter. More on that shortly.

Massimo
by Go-Figure
21 Feb 2021, 04:48
Forum: Spectrum
Topic: Uraninite from Piemonte - Sample 1
Replies: 2
Views: 409

Uraninite from Piemonte - Sample 1

Hello there, I got myself two new samples to test, they’re two Uraninite specimens from Valle Antrona, Piemonte, a northwestern region of Italy. Here I show results from the first sample, which is the better looking, although the other one is by far the hotter of the two. Uraninite, also known as Pi...
by Go-Figure
21 Feb 2021, 04:14
Forum: Spectrum
Topic: Chernobyl Contamination in Italian Alps Soil Extended – 30 Day Gamma Spectrum
Replies: 2
Views: 1131

Re: Chernobyl Contamination in Italian Alps Soil Extended – 30 Day Gamma Spectrum

cicastol wrote:
11 Jan 2021, 19:19
Now it really stand up!
30 days integration should be taken as a new World record guiness :-)
Yeah, but my PC didn't like it, I can tell you!
by Go-Figure
21 Feb 2021, 03:50
Forum: Spectrum
Topic: Cs137 in biomass pelletized wood ash
Replies: 8
Views: 1255

Re: Cs137 in biomass pelletized wood ash

Nice one Ciro, this is something I've never thought about.
I don't use pelletized wood for heating, but maybe I can get myself some! :)

Massimo
by Go-Figure
21 Feb 2021, 03:46
Forum: Spectrum
Topic: K40 Confusion - Mislabelled?
Replies: 4
Views: 734

Re: K40 Confusion - Mislabelled?

As far as I am concerned, if the sample is hot enough and it doesn't have some K40 in itself, the Potassium peak from my background is dwarfed to insignificance with my 2''x2'' NaI(Tl). There are three more Th232 progeny peaks I usually identified and I think I can see then in your spectrum as well,...
by Go-Figure
21 Feb 2021, 03:33
Forum: Spectrum
Topic: Lanthanum 100g 99.9% (with significant Ac227) contamination
Replies: 5
Views: 663

Re: Lanthanum 100g 99.9% (with significant Ac227) contamination

Here is a spectrum of 100g of pure Lanthanum metal that @Gigabequerel and I ordered from Onyxmet. The expected La138 peaks are there, along with Ac227 peaks. I believe is due to the chemical similarity of Actinium and Lanthanum and so it gets caught in the separation process. Lanthanium is somethin...
by Go-Figure
11 Jan 2021, 01:14
Forum: Spectrum
Topic: Trinitite Small Sample - Though he be but little, he is fierce!
Replies: 5
Views: 1107

Re: Trinitite Small Sample - Though he be but little, he is fierce!

That also depends on the Geiger counter itself, the Ranger is quite sensitive and also has a quite large pancake probe which can detect alphas. Different geigers would give different count rates testing the same sample or the background. With this particular geiger I've never got less than 900 CPM ...
by Go-Figure
04 Jan 2021, 07:43
Forum: Spectrum
Topic: Trinitite Small Sample - Though he be but little, he is fierce!
Replies: 5
Views: 1107

Re: Trinitite Small Sample - Though he be but little, he is fierce!

I had always thought about Trinitite as being associated with the first atom bomb test in New Mexico in 1945. I am pretty certain that the specimens that I've measured all came from that location. But there are other locations where Trinitite has been produced. I am uploading a pdf document that br...