Experimental determination of the scattering length for positron scattering from krypton

Antonio Zecca; Luca Chiari; E Trainotti; D Fursa; I Bray; Michael Brunger

doi:10.1140/epjd/e2011-20333-7

Experimental determination of the scattering length for positron scattering from krypton

Antonio Zecca, Luca Chiari, E Trainotti, D Fursa, I Bray, Michael Brunger

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

34 Citations (Scopus)

Abstract

We report the first experimentally supported determination of the scattering length for positron scattering from krypton. Our result of -10.3 ± 1.5 a.u. compares favourably with that from a convergent close coupling calculation performed as a part of this investigation (-9.5 a.u.), and also with an earlier many body theory calculation of -10.1 a.u. from Gribakin and Ludlow [Phys. Rev. A 70, 032720 (2004)] and a polarized-orbital result of -10.4 a.u. from McEachran et al. [J. Phys. B 13, 1281 (1980)]. The present experimental scattering length supports the existence of a low-lying positron-krypton virtual state (Surko et al. [J. Phys. B 38, R57 (2005)]) at an energy ε = 0.13 eV.

Original language	English
Pages (from-to)	317-321
Number of pages	5
Journal	The European Physical Journal D
Volume	64
Issue number	2-3
DOIs	https://doi.org/10.1140/epjd/e2011-20333-7
Publication status	Published - Oct 2011

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title = "Experimental determination of the scattering length for positron scattering from krypton",

abstract = "We report the first experimentally supported determination of the scattering length for positron scattering from krypton. Our result of -10.3 ± 1.5 a.u. compares favourably with that from a convergent close coupling calculation performed as a part of this investigation (-9.5 a.u.), and also with an earlier many body theory calculation of -10.1 a.u. from Gribakin and Ludlow [Phys. Rev. A 70, 032720 (2004)] and a polarized-orbital result of -10.4 a.u. from McEachran et al. [J. Phys. B 13, 1281 (1980)]. The present experimental scattering length supports the existence of a low-lying positron-krypton virtual state (Surko et al. [J. Phys. B 38, R57 (2005)]) at an energy ε = 0.13 eV.",

author = "Antonio Zecca and Luca Chiari and E Trainotti and D Fursa and I Bray and Michael Brunger",

year = "2011",

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doi = "10.1140/epjd/e2011-20333-7",

language = "English",

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T1 - Experimental determination of the scattering length for positron scattering from krypton

AU - Zecca, Antonio

AU - Chiari, Luca

AU - Trainotti, E

AU - Fursa, D

AU - Bray, I

AU - Brunger, Michael

PY - 2011/10

Y1 - 2011/10

N2 - We report the first experimentally supported determination of the scattering length for positron scattering from krypton. Our result of -10.3 ± 1.5 a.u. compares favourably with that from a convergent close coupling calculation performed as a part of this investigation (-9.5 a.u.), and also with an earlier many body theory calculation of -10.1 a.u. from Gribakin and Ludlow [Phys. Rev. A 70, 032720 (2004)] and a polarized-orbital result of -10.4 a.u. from McEachran et al. [J. Phys. B 13, 1281 (1980)]. The present experimental scattering length supports the existence of a low-lying positron-krypton virtual state (Surko et al. [J. Phys. B 38, R57 (2005)]) at an energy ε = 0.13 eV.

AB - We report the first experimentally supported determination of the scattering length for positron scattering from krypton. Our result of -10.3 ± 1.5 a.u. compares favourably with that from a convergent close coupling calculation performed as a part of this investigation (-9.5 a.u.), and also with an earlier many body theory calculation of -10.1 a.u. from Gribakin and Ludlow [Phys. Rev. A 70, 032720 (2004)] and a polarized-orbital result of -10.4 a.u. from McEachran et al. [J. Phys. B 13, 1281 (1980)]. The present experimental scattering length supports the existence of a low-lying positron-krypton virtual state (Surko et al. [J. Phys. B 38, R57 (2005)]) at an energy ε = 0.13 eV.

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JO - The European Physical Journal D

JF - The European Physical Journal D

SN - 1434-6060

IS - 2-3

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Experimental determination of the scattering length for positron scattering from krypton

Abstract

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