U235: a gamma ray analysis code for uranium isotopic determination

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A {sup 235}U analysis code, U235, has been written that can nondestructively determine the percentage of {sup 235}U in a uranium sample from the analysis of the emitted gamma rays. The code is operational and work is now underway to improve the accuracy of the calculation, particularly at the high (>90%) and low (<0.7%) {sup 235}U concentrations. A technique has been found to evaluate low {sup 235}U concentrations that works well on the existing standards. Work is now under way to evaluate this technique for other detectors and other types of samples. Work is also proceeding on: (1) ways to ... continued below

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39 p.; Other: FDE: PDF; PL:

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Clark, D. December 1, 1997.

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Description

A {sup 235}U analysis code, U235, has been written that can nondestructively determine the percentage of {sup 235}U in a uranium sample from the analysis of the emitted gamma rays. The code is operational and work is now underway to improve the accuracy of the calculation, particularly at the high (>90%) and low (<0.7%) {sup 235}U concentrations. A technique has been found to evaluate low {sup 235}U concentrations that works well on the existing standards. Work is now under way to evaluate this technique for other detectors and other types of samples. Work is also proceeding on: (1) ways to better determine gamma backgrounds, (2) techniques to determine the equivalent thickness of the sample to correct for gamma attenuation, (3) evaluation of the existing data base of branching ratios of {sup 235}U, {sup 238}U and their daughters gamma rays to allow better results and (4) evaluation of the existing data base on the emission ratios for uranium, thorium, and protactinium x-rays.

Physical Description

39 p.; Other: FDE: PDF; PL:

Notes

OSTI as DE98057424

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  • Other Information: PBD: 1 Dec 1997

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  • Other: DE98057424
  • Report No.: UCRL-ID--125727
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/310887 | External Link
  • Office of Scientific & Technical Information Report Number: 310887
  • Archival Resource Key: ark:/67531/metadc688862

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  • December 1, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Feb. 23, 2016, 6:58 p.m.

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Clark, D. U235: a gamma ray analysis code for uranium isotopic determination, report, December 1, 1997; California. (digital.library.unt.edu/ark:/67531/metadc688862/: accessed June 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.