Analysis of momentum distribution of bloch-positronium in solids

Y. Nagai; M. Kakimoto; H. Ikari; T. Hyodo

doi:10.4028/www.scientific.net/msf.255-257.596

Analysis of momentum distribution of bloch-positronium in solids

Y. Nagai, M. Kakimoto, H. Ikari, T. Hyodo

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

An analysis of momentum distribution of delocalized Bloch-positronium in solids measured by 1D-ACAR method is presented. The momentum distribution of the positronium, which is proportional to the energy integration of the spectral function weighted with Bose distribution, is expressed in terms of the effective mass and the deformation potential of the positronium. A Simple expression of the positronium peak shape in the 1D-ACAR spectrum is obtained by integrating over the two direction of momenta prior to the energy integration. This analysis is applied to the experimental positronium momentum distributions in SiO₂ and MgF₂.

Original language	English
Pages (from-to)	596-598
Number of pages	3
Journal	Materials Science Forum
Volume	255-257
DOIs	https://doi.org/10.4028/www.scientific.net/msf.255-257.596
Publication status	Published - 1997
Externally published	Yes

Keywords

1D-ACAR
Delocalized Positronium
Momentum Distribution
Spectral Function

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "An analysis of momentum distribution of delocalized Bloch-positronium in solids measured by 1D-ACAR method is presented. The momentum distribution of the positronium, which is proportional to the energy integration of the spectral function weighted with Bose distribution, is expressed in terms of the effective mass and the deformation potential of the positronium. A Simple expression of the positronium peak shape in the 1D-ACAR spectrum is obtained by integrating over the two direction of momenta prior to the energy integration. This analysis is applied to the experimental positronium momentum distributions in SiO2 and MgF2.",

keywords = "1D-ACAR, Delocalized Positronium, Momentum Distribution, Spectral Function",

author = "Y. Nagai and M. Kakimoto and H. Ikari and T. Hyodo",

year = "1997",

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journal = "Materials Science Forum",

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T1 - Analysis of momentum distribution of bloch-positronium in solids

AU - Nagai, Y.

AU - Kakimoto, M.

AU - Ikari, H.

AU - Hyodo, T.

PY - 1997

Y1 - 1997

N2 - An analysis of momentum distribution of delocalized Bloch-positronium in solids measured by 1D-ACAR method is presented. The momentum distribution of the positronium, which is proportional to the energy integration of the spectral function weighted with Bose distribution, is expressed in terms of the effective mass and the deformation potential of the positronium. A Simple expression of the positronium peak shape in the 1D-ACAR spectrum is obtained by integrating over the two direction of momenta prior to the energy integration. This analysis is applied to the experimental positronium momentum distributions in SiO2 and MgF2.

AB - An analysis of momentum distribution of delocalized Bloch-positronium in solids measured by 1D-ACAR method is presented. The momentum distribution of the positronium, which is proportional to the energy integration of the spectral function weighted with Bose distribution, is expressed in terms of the effective mass and the deformation potential of the positronium. A Simple expression of the positronium peak shape in the 1D-ACAR spectrum is obtained by integrating over the two direction of momenta prior to the energy integration. This analysis is applied to the experimental positronium momentum distributions in SiO2 and MgF2.

KW - 1D-ACAR

KW - Delocalized Positronium

KW - Momentum Distribution

KW - Spectral Function

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