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Gamma-ray Energies Measured with Ge(Li) Spectrometer

  • R. G. Helmer
  • R. C. Greenwood
  • R. J. Gehrke
Conference paper

Abstract

In this paper, we discuss the capability of Ge(Li) spectrometers for the precise determination of gamma-ray energies. Of special interest here is the consideration of the problems, and the precision attainable, for gamma rays with energies of a few MeV. Previously, the energies of some gamma-ray transitions and nuclear levels from the (n,γ) reaction have been reported by one of the authors (1). These energies extend up to ~ 11 MeV with uncertainties of ~ 0.5 keV. Some of these energies were determined by summing the energies of the cascade gamma rays. Also in many cases the gamma-ray energies were measured by comparing a double-escape (DE) peak with nearby full-energy (FE) peaks. In the course of these experiments, it became clear that any further improvement in these energy measurements would have to be preceded by a systematic review and analysis of the assumptions involved and an improvement in the calibration energies available below 3 MeV.

Keywords

Energy Scale Calibration Line Fundamental Constant Small Energy Difference Annihilation Line 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Company Ltd 1972

Authors and Affiliations

  • R. G. Helmer
    • 1
  • R. C. Greenwood
    • 1
  • R. J. Gehrke
    • 1
  1. 1.Aerojet Nuclear CompanyNational Reactor Testing StationIdaho FallsUSA

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