Precise Radiation Energy and Core Electron Contribution of Positron Annihilation in Al Studied with Two Ge (Li) Detectors

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概要

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• The average energy of positron annihilation radiation from Al has been determine<5y the Doppler-broadening summing technique with two detectors. Energzdifferences of annihilation radiation from the electron rest mass are 8.283.1 eV an<8.9f3.3 eV for the single and coincidence measurements, respectively. According t<the analysis by using the electron binding energy, half of the intensity of the momenturn distribution outside the Fermi momentum is due to high-momentum componentof the conduction electrons. The contribution of the core electrons to the total annihilation is estimated to be 5 - 6% , and the core enhancement factor is 1 .2 - 1 .5. Thaverage energy o f annihilation radiation estimated with this contribution is consistenwith the above measured values within the experimental accuracy.[positron annihilation in aluminum, Dopp[er-broadening technique, energyI measurement, core enhancement factor

• 社団法人日本物理学会の論文
• 1992-01-15

著者

• MATSUI Sakuo

  Department of Physics,Faculty of Science,Hiroshima University

• Matsui Sakuo

  Department Of Physics Faculty Of Science Hiroshima University:riken (institute Of Physical And Chemi

関連論文

• Annihilation Radiation Spectrum of Ortho-Positronium Three-Quantum Decay in Liquid Helium
• Precise Radiation Energy and Core Electron Contribution of Positron Annihilation in Al Studied with Two Ge (Li) Detectors
• Positron Mass Spectrometer Design using Crossed Electric and Magnetic Fields

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