Search found 107 matches

by Peter-1
08 Jul 2019, 02:14
Forum: Spectrum
Topic: Lava Stone Pendant - Thorium 232
Replies: 3
Views: 117

Re: Lava Stone Pendant - Thorium 232

Hi Massimo, that's great fun. I'm feeling much better by laughing. and so you stay young and do not age. In January, I saw the part and wanted to know how strong it radiates and whether Thorium is clearly visible. Here is my result. Background 15.7 CPS , with Quantum P. i have 53.8 CPS. Peter https:...
by Peter-1
06 Jul 2019, 06:52
Forum: Spectrum
Topic: Granite
Replies: 5
Views: 135

Re: Granite

Hello,
the background is 15.8 CPS and with granite i have 25.8 CPS.
Peter
by Peter-1
06 Jul 2019, 01:26
Forum: Spectrum
Topic: Granite
Replies: 5
Views: 135

Re: Granite

Hi, the overall weight of the granite blocks is 220 gram.
Peter
by Peter-1
05 Jul 2019, 01:40
Forum: Spectrum
Topic: Granite
Replies: 5
Views: 135

Granite

Hello, I found these nice granite cubes in a shop in Germany ( 5€ only). They should serve as ice cubes. Since granite always contains some uranium and thorium, I wanted to know how well it is detectable. Here is my attempt. Granit-3.jpg 2019_06_25-Granit-Würfel.png All expected lines are clearly vi...
by Peter-1
21 May 2019, 03:54
Forum: Spectrum
Topic: Fukushima Soil
Replies: 22
Views: 1287

Re: Fukushima Soil

It has left me no peace
and so I have measured again. The resolution is certainly not bad, but I can not see more with my 2 "x 2" NaI.
2019_05_19-Fukushima.png
2019_05_19-Fukushima.png (96.23 KiB) Viewed 460 times
Peter
by Peter-1
16 May 2019, 04:02
Forum: General discussion
Topic: Radiodating using NaI(Tl)
Replies: 11
Views: 860

Re: Radiodating using NaI(Tl)

hello,
if I understand correctly, zircon contains the elements uranium and thorium with their decay products. So you should see these lines. Or are there other lines? That has to be measured well.
Peter
by Peter-1
14 May 2019, 02:51
Forum: Spectrum
Topic: Uranophane
Replies: 2
Views: 217

Uranophane

my last measurement
with a mineral uranophane from menzenschwand in the black forest, germany.
The slight decay intensities could not be resolved.
Uranophan-10.jpg
Uranophan-2019.jpg
Peter
by Peter-1
02 May 2019, 19:54
Forum: Spectrum
Topic: Greetings from Victoria, BC Canada + Cs137 spectrum with odd peak
Replies: 14
Views: 855

Re: Greetings from Victoria, BC Canada + Cs137 spectrum with odd peak

hello Conor, I'm a little surprised that immediately after the peak 661keV no more lines, no noise is visible. I also use theremino and made many attempts to find the right fit. I suspect that the sound card can not handle the signal. As a simple test, I suggest taking the salt KCl as a test. If the...
by Peter-1
28 Apr 2019, 23:22
Forum: Spectrum
Topic: Greetings from Victoria, BC Canada + Cs137 spectrum with odd peak
Replies: 14
Views: 855

Re: Greetings from Victoria, BC Canada + Cs137 spectrum with odd peak

Hello
I made a quick test with only the background and with my Cs137 from fukushima. And now ?
Image
Peter
by Peter-1
28 Apr 2019, 18:01
Forum: Spectrum
Topic: Greetings from Victoria, BC Canada + Cs137 spectrum with odd peak
Replies: 14
Views: 855

Re: Greetings from Victoria, BC Canada + Cs137 spectrum with odd peak

Hello Cesium,
I have a small probe from fukushima and can see the same peak.
Image
I think this is Cs134.
Peter