Centroid shift of γ rays from positron annihilation in the depletion region of metal-oxide-semiconductor structures
Leung, T. C. ; Kong, Y. ; Lynn, K. G. ; Nielsen, B. ; Weinberg, Z. A. ; Rubloff, G. W.
Woodbury, NY : American Institute of Physics (AIP)
Published 1991
Woodbury, NY : American Institute of Physics (AIP)
Published 1991
| ISSN: |
1077-3118
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
Using metal-oxide-semiconductor (MOS) structures, the shift of centroid (peak) of γ-ray energy distributions emitted from positron annihilation has been measured as a function of incident positron energy. The Doppler centroid shift was found to be consistent with the positron motion in the MOS depletion region. The results are described by a one-dimensional positron diffusion model, and provide information on "effective'' positron diffusion length under applied field.
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| Type of Medium: |
Electronic Resource
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| URL: |