𝛾-Ray Spectra and Enhancement Factors for Positron Annihilation with Core Electrons

D. G. Green; G. F. Gribakin

doi:10.1103/PhysRevLett.114.093201

𝛾-Ray Spectra and Enhancement Factors for Positron Annihilation with Core Electrons

D. G. Green^*
, G. F. Gribakin

^*Corresponding author for this work

School of Mathematics and Physics

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

37 Citations (Scopus)

473 Downloads (Pure)

Abstract

Many-body theory is developed to calculate the γ spectra for positron annihilation in noble-gas atoms. Inclusion of electron-positron correlation effects and core annihilation gives spectra in excellent agreement with experiment [K. Iwata et al., Phys. Rev. Lett. 79, 39 (1997)]. The calculated correlation enhancement factors γnl for individual electron orbitals nl are found to scale with the ionization energy I_nl (in eV), as γ_nl=1+ √A/I_nl+(B/I_nl)^β, where A≈40 eV, B≈24 eV, and β≈2.3.

Original language	English
Article number	093201
Number of pages	5
Journal	Physical Review Letters
Volume	114
Issue number	9
Early online date	04 Mar 2015
DOIs	https://doi.org/10.1103/PhysRevLett.114.093201
Publication status	Published - 06 Mar 2015

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Gamma-ray Spectra and Enhancement Factors for Positron Annihilation with Core Electrons
© 2015 American Physical Society. This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 655 KBLicence: Unspecified

Dermot Green
- d.greenqub.acuk
- School of Mathematics and Physics - Professor
- Centre for Light-Matter Interaction (CLMI)
Person: Academic
Gleb Gribakin
- g.gribakinqub.acuk
- School of Mathematics and Physics - Reader
- Centre for Light-Matter Interaction (CLMI)
Person: Academic

Cite this

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abstract = "Many-body theory is developed to calculate the γ spectra for positron annihilation in noble-gas atoms. Inclusion of electron-positron correlation effects and core annihilation gives spectra in excellent agreement with experiment [K. Iwata et al., Phys. Rev. Lett. 79, 39 (1997)]. The calculated correlation enhancement factors γnl for individual electron orbitals nl are found to scale with the ionization energy Inl (in eV), as γnl=1+ √A/Inl+(B/Inl)β, where A≈40 eV, B≈24 eV, and β≈2.3.",

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N2 - Many-body theory is developed to calculate the γ spectra for positron annihilation in noble-gas atoms. Inclusion of electron-positron correlation effects and core annihilation gives spectra in excellent agreement with experiment [K. Iwata et al., Phys. Rev. Lett. 79, 39 (1997)]. The calculated correlation enhancement factors γnl for individual electron orbitals nl are found to scale with the ionization energy Inl (in eV), as γnl=1+ √A/Inl+(B/Inl)β, where A≈40 eV, B≈24 eV, and β≈2.3.

AB - Many-body theory is developed to calculate the γ spectra for positron annihilation in noble-gas atoms. Inclusion of electron-positron correlation effects and core annihilation gives spectra in excellent agreement with experiment [K. Iwata et al., Phys. Rev. Lett. 79, 39 (1997)]. The calculated correlation enhancement factors γnl for individual electron orbitals nl are found to scale with the ionization energy Inl (in eV), as γnl=1+ √A/Inl+(B/Inl)β, where A≈40 eV, B≈24 eV, and β≈2.3.

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𝛾-Ray Spectra and Enhancement Factors for Positron Annihilation with Core Electrons

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