Tag Archives: mass

Autunite Uranium Spectrum!

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Autunite

Autunite - Uranium


Autunite is a very beautiful, many might say the most beautiful, uranium-bearing mineral. Autunite contains many amazing isotopes, including a few transuranic elements! I received a sample of the beautiful and deadly mineral from a friend at the cost of an analysis using my gamma spectrometer.

I have finally completed a calibration analysis of my spectrometer, to include a 17 KeV to 2MeV window with a +/- 3KeV tolerance. These are favorable conditions for analysis of uranium and uranium daughters.

Today, I tested my new Autunite sample in my gamma spectrometer to see what I might find within it’s calcium-encrusted innards. The primary natural uranium products are there, as expect: Lead 214 and Bismuth 214 being heavy gamma emitters, lead the way with large spikes at 351.92 KeV, 295 KeV, and 609.31KeV, 1764.49 KeV, respectively. I detected a tiny bit of Radium 226, Uranium 235, and Uranium 238.

Japanese Air Filter Test Results

Filed under Radiation, Science
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Recently, a friend of mine sent me a series of samples from Japan. He, my friend, lives in Japan and obtained these samples at some personal risk. I have started the process of testing each of the many samples using gamma spectroscopy and other techniques. I will be posting my results for each sample as I test them, which may take time given my busy work schedule.

Sample J-F is an air filter from an apartment AC/heater (shown below).
J-F Sample in original bag from Japan. Note the "Hello Kitty" on the bag.

As you can see, the analysis did detect a possible 85 Krypton contaminant, as well as other curious spikes. Please take a look and see what information you can detect from this spectrum and the accompanying data.

AC/Heater Paper Filter Sample J-F From Saga City, Saga Prefecture

AC/Heater Paper Filter Sample J-F From Saga City, Saga Prefecture



 
Full Report – Edited for public release
 
Spectrum Peak Report
 
Spectrum Data Report
 

Japanese Soil Tests – First Results

Filed under Radiation, Science
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Soil Sample J-A From Kashiwa City, Chiba Prefecture (26km NE from Tokyo)

Soil Sample J-A From Kashiwa City, Chiba Prefecture (26km NE from Tokyo)


[NOTE: This is not my official results, but a merely my first test of the materials. Much more to come]

I have just received a set of samples from a friend in Japan. The samples are from various locations around the country and ready to be tested in my gamma spectrometer. I will be publishing a full set of tests very soon, but until that time I thought I might provide a small glimpse of the preliminary results. This is a gamma spectrum from a sample, J-A_3600s, which was tested for one full hour using gamma spectroscopy. The sample shown came in a small 1” x 2” canister and contained soil from just under a water rain spout in residential housing area (back yard), of a person living in Kashiwa City, Chiba Prefecture (26km NE from Tokyo).

The sample measured about 306 CPM at contact using a 2” pancake Geiger Muller probe. During the hour of testing, clear photo-peaks for Cesium 134 and 137 were easily detected from the sample. Other features included several very small deformations in the spectrum which were either inconsequential, i.e. x-ray interference, or unidentifiable due to extremely low activity.

The extreme amounts of background “noise” found in the spectrum is consistent with a powerful beta emitter. Gamma spectroscopy cannot directly detect Strontium 90, but given the release amounts of Cs 137 and the typical matching of Cs137 and Sr90 isotopes following a nuclear release, like that of Fukushima, it is plausible to consider that Sr90, and by decay association Y90 and Y90m, are also present.

Autunite Mineral Tested

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Autunite is a very beautiful, many might say the most beautiful, uranium-bearing mineral. Autunite contains many amazing isotopes, including a few transuranic elements! I received a sample of the beautiful and deadly mineral from a friend at the cost of an analysis using my gamma spectrometer.

I have finally completed a calibration analysis of my spectrometer, to include a 17 KeV to 2MeV window with a +/- 3KeV tolerance. These are favorable conditions for analysis of uranium and uranium daughters.

Today, I tested my new Autunite sample in my gamma spectrometer to see what I might find within it’s calcium-encrusted innards. I was amazed at what I found, including U235! The primary natural uranium products are there, as expect: Lead 214 and Bismuth 214 being heavy gamma emitters, lead the way with large spikes at 351.92 KeV, 295 KeV, and 609.31KeV, 1764.49 KeV, respectively. I detected a tiny bit of Radium 226, Uranium 235, and Uranium 238.

Autunite Full Scale Report
Autunite, ROI Peak Report
Autunite Information

Alpha Radiation, Geiger Counters 101 Part Two

Filed under Basics, Radiation
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Alpha radiation was first detected in the late 19th century by Ernest Rutherford. Alpha radiation is the release of two protons and two neutrons with many millions of electron volts of kinetic energy! Alpha radiation is very positivity charged and cannot readily move more than a few centimeters from a source before tuning into normal helium. As a result, alpha radiation is only dangerous when inhaled, ingested, or otherwise allowed into the body.

Three more videos are coming!
Beta Radiation, Geiger Counters 101 Part Three
Gamma and X-Ray Radiation, Geiger Counters 101 Part Four
Radiation Math, Geiger Counters 101 Part Five

Important Websites:
Anti-Proton.com
GeigerCounters.com
RadiationNetwork.com
Medcom.com
Seintl.com