Tag Archives: gamma spectroscopy

Nuclear Material Generator!

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The Spectrum Techniques Barium 137m Generator is a small device used to generate small quantities of the short lived radio-nuclide Ba137m.

http://www.spectrumtechniques.com/isotope_generator.htm

The Sounds of the Atoms

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I made the recordings and the images seen in the video.

Sounds made using a GS1100A from GammaSpectacular.com, a Radiation Sensors SPA38 from SpectrumTechniques.com, sources from SpectrumTechniques.com (and other places), software from PRA

The gamma energies are detected by the NaI(Tl) detector and converted into pulses of electricity, proportionate to their energy (low energy, low voltage, high energy, high voltage). The spectrometer converted these to sound. The higher the energy, the higher the pitch of the sound.

Sources/detector: SpectrumTechniques.com
Spectrometer: GammaSpectacular.com
Software: http://www.physics.usyd.edu.au/~marek…
Spectra: http://anti-proton.com/?page_id=663

Radioactive Monazite Tested!

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Monazite, a Rare Earth Minerals rich mineral found in many parts of the world, from India, to Brazil.
This sample contained thorium, which made it radioactive.

Bionerd23 basking in Monazite-rich sands in Brazil: https://www.youtube.com/watch?v=vdHHUGwFoJE

My spectrum of the sample: http://anti-proton.com/monazite.png

Basic Isotope Identification (Gamma Spectroscopy)

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Please read below (Resource links, etc)

Copyright:
All materials in this video are copyright of me. I created them all. The screen captures of the software are from Spectrum Techniques.

My Equipment:

Spectrometer: UCS30 – http://www.spectrumtechniques.com/spec_systems.htm
Sources: Cs137 – http://www.spectrumtechniques.com/disc&laminated_sources.htm
Lead: rotometals.com

Gamma Energy Resources:

http://ie.lbl.gov/decay.html
http://ie.lbl.gov/toi/radSearch.asp
http://simplynuclear.com/index.php?title=Common_Gamma_Energy

Thorium Hypothesis
Isotope Energy Branching Ratio
Actinium 228 13 keV 0.38
Thorium 232 *63.81 keV 0.00267
Lead 212 *77.11 keV 0.175
Thorium 228 84.37 keV 0.01266
Thorium 228 131.61 keV 0.001355
Thorium 228 166.41 keV 0.001075
Thorium 228 215.99 keV 0.00263
Lead 212 238.63 keV 0.433
Actinium 228 *338.32 keV 0.113
Thallium 208 510.77 keV 0.226
Thallium 208 *583.19 keV 0.845
Bismuth 212 727.33 keV 0.0658
Actinium 228 911.21 keV 0.266
Actinium 228 968.97 keV 0.162

Uranium Hypothesis
Isotope Energy Branching Ratio
Uranium 238 13 keV 0.08
Uranium 235 19.59 keV 0.61
Lead 210 46.54 keV 0.0425
Lead 214 77.11 keV 0.099
Thorium 234 92.38 keV 0.028
Thorium 234 92.8 keV 0.028
Uranium 235 143.76 keV 0.1096
Uranium 235 185.71 keV 0.572
Radium 226 *186.1 keV 0.35
Thorium 227 235.97 keV 0.123
Lead 214 *241.98 keV 0.075
Lead 214 *295.21 keV 0.185
Lead 214 *351.92 keV 0.358
Bismuth 211 404.85 keV 0.0378
Bismuth 214 *609.31 keV 0.448
Bismuth 214 768.36 keV 0.048
Protactinium 234m 1001.03 keV 0.00370

Potassium 40 Hypothesis
Isotope Energy Branching Ratio
Potassium 40 *1461 keV 0.1067

Depleted Uranium Hypothesis
Isotope Energy Branching Ratio
Thorium 234 13.3 keV 0.045
Thorium 234 *63.29 keV 0.048
Thorium 234 *92.38 keV 0.028
Thorium 234 *92.8 keV 0.028
Uranium 235 19.59 keV 0.61
Uranium 235 *143.76 keV 0.1096
Uranium 235 185.71 keV 0.572
Protactinium 234m 1001.03 keV 0.00370

Polimaster 1703MO-1A/B Gamma Spectrum Background Remover

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Background photons can cloud your gamma spectrum and make life a little harder and so it becomes important to remove them. In order to remove them, I have written a small program in Java which does this. This program comes with no warranties and should be used AT YOUR OWN RISK. If it causes you problems, I apologize but you use the program at your own risk. I am working on a better version with a nice graphical user interface and additional features.

Installation Instruction:

Download zip file and extract to some desired location, perhaps c:\polihelper\.
Ensure Java Runtime Environment is at least Version 6 Update 30 or later (see how to check at http://ww2.valdosta.edu/vista/java_checkversion.shtml)
Take a background spectrum (without sample) for a period of time, perhaps 30 minutes.
Take a spectrum of the sample for the same period of time.
Use place the spectrum files in the same place as the program and run the program
Example: polihelper sample-spectrum.spe background-spectrum.spe cleaned-sample-spectrum.spe

Now, merely open the new file using Poli Identify and enjoy your cleaned spectrum!

Build date:
The Current Build: http://anti-proton.com/polihelper.zip

Sample Spectrum

Sample Spectrum

Background Spectrum

Background Spectrum

Cleaned Sample Spectrum

Cleaned Sample Spectrum