Plutonium Analysis by Alpha-Spectrometry

Plutonium Analysis by Alpha-Spectrometry

Sample Receiving and Preparation
Sample Management Office
Sample Receiving
Quality Control

Analytical Processes
Thermal Ionization Mass Spectroscopy

TIMS Sample Preparation

Alpha-Spec Pu Sample Preparation - Separation

Alpha-Spec Pu Sample Preparation - Electroplating

Plutonium Analysis by Alpha-Spectrometry

Other Links
Project Documentation

Bioassay Homepage

The electroplated samples are analyzed and quantified by alpha-spectrometry. The samples are counted for 70,000 seconds on passivated ion-implanted junction silicon detectors, which provide an average energy resolution of 16 keV FWHM, allowing the activities of Pu-238 and Pu-239/240 to be determined based on chemical recovery of the Pu-242 tracer. The C-INC counting facility has dedicated 48 individual counting chambers to the LANL Bioassay Project. The nominal detection limit for Pu-238 and Pu-239/240 is less than 10 fCi/sample. This operation analyzes in excess of 3,000 samples per year for the LANL Bioassay Project.

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