Call for interesting and unusual spectra.

Share your spectra and discuss their features here
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Steven Sesselmann
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Call for interesting and unusual spectra.

Post by Steven Sesselmann » 24 Oct 2017, 08:07

Hi All,

I would like to continue updating my database of spectra on the main web site. These pages attract a lot of googlers, and I guess serve as a source of good information.

http://www.gammaspectacular.com/gamma_spectra

What I am looking for are good sharp calibrated spectra with a description of what isotopes we are seeing and if possible some information about the source and specific decay process. I also need your permission to repost it on my page, obviously with a credit to the contributor.

Have something interesting, then just add it in a reply to this post or PM me if you prefer.

Thanks..

Steven
Steven Sesselmann | Sydney | Australia | gammaspectacular.com | groundpotential.org | rephopper.com | beejewel.com.au |

luuk
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Re: Call for interesting and unusual spectra.

Post by luuk » 24 Oct 2017, 18:26

Hi Steven,
If I remember well I posted some Am-241 about 2 years ago measured with CsI(Tl) is that something you are looking for?
Luuk

lodovico
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Re: Call for interesting and unusual spectra.

Post by lodovico » 24 Oct 2017, 18:29

Hi,
if you want I have a spectrum from lanthanum 138 (NaI 63x63mm) from 100g of lanthanum oxide



Lodovico
Attachments
lanthanum.png

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Steven Sesselmann
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Re: Call for interesting and unusual spectra.

Post by Steven Sesselmann » 24 Oct 2017, 21:32

Lodovico,

Yes any isotopes not yet listed or better spectra of those already listed .

Some of your old post from the old forum might have disappeared, because I upgraded the web site and lost the old forum.

Still have the database but no front end page.

Steven
Steven Sesselmann | Sydney | Australia | gammaspectacular.com | groundpotential.org | rephopper.com | beejewel.com.au |

Pure Coincidence
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Location: Mannheim, Germany
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Re: Call for interesting and unusual spectra.

Post by Pure Coincidence » 06 Nov 2017, 07:12

Hallo Steven,

the spectra of radium and uranium are very similar.

Radium Source > Pocket Watch
Uran Source > Mineral Torbernit Cu[UO2|PO4]2·12H2O

At the moment I am still waiting for a better sound card,
then I want to optimize the energy calibration and add comments.

DIY Probe:
PMT Hamamatsu 10133
NAI Crystal 63x63mm

Driver:
GS 1100A

Software:
PRA Software 16.0.1.2 10.000.000 Counts ---> Export
GNUPLOT

Greetings Gerd
Attachments
Uran_vs_Radium_low_log.png
Uran_vs_Radium_low.png
Uran_vs_Radium_full_log.png
Uran_vs_Radium_full.png

stamasd
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Re: Call for interesting and unusual spectra.

Post by stamasd » 07 Nov 2017, 11:59

I'm not currently setup for any usable gamma spectroscopy right now, but I will be in the very near future.
I have one interesting thing I'd like to take a gamma spectrum of. It's a 1-pound ingot of mischmetal. I've had that for a very long time (going on 20 years now) as a curiosity. In case you don't know, mischmetal is a raw mixture of lanthanides as they are extracted from various sources, primarily monazite. It usually has around 50% cerium, 30% lanthanum and the rest is a mix of all of the other lanthanides. Supposedly most of the thorium and radium are removed before the concentrate is reduced to metal, but I'm sure there should be enough of either and their daughters left to be discernible. I'm very curious what other isotopes, if any, can be identified in this sample.
Real name: Silviu Tamasdan

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Peter-1
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Re: Call for interesting and unusual spectra.

Post by Peter-1 » 08 Nov 2017, 03:13

Hello Gerd,

I think there is a small difference between UO2 and Ra 226.
UO2-Ra226.jpg
Peter

Pure Coincidence
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Re: Call for interesting and unusual spectra.

Post by Pure Coincidence » 08 Nov 2017, 06:55

Very interesting. I'm sure I did not mix up the mineral and the pocket watch.
I'll take another look at that when the new sound card is set.
Thanks for the information.

Greetings Gerd

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Geoff
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Re: Call for interesting and unusual spectra.

Post by Geoff » 09 Nov 2017, 05:11

Here's my spectrum of 56Mn
manganese 56.JPG
Geoff Van Horn

Anchorage and Deadhorse Alaska

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Steven Sesselmann
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Re: Call for interesting and unusual spectra.

Post by Steven Sesselmann » 09 Nov 2017, 07:08

Nice one,

Thanks for bringing this one back.

Fast neutron activation, 2.5 hour half life, no time to wasted getting this spectrum :)

Steven
56Mn-data.png
Steven Sesselmann | Sydney | Australia | gammaspectacular.com | groundpotential.org | rephopper.com | beejewel.com.au |

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