Experimental determination of the scattering length for positron scattering from krypton

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...

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Main Authors:	Zecca, A., Chiari, L., Trainotti, E., Fursa, Dmitry, Bray, Igor, Brunger, M.
Format:	Journal Article
Published:	Springer 2011
Online Access:	http://hdl.handle.net/20.500.11937/37740

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spelling	curtin-20.500.11937-377402017-09-13T15:58:42Z Experimental determination of the scattering length for positron scattering from krypton Zecca, A. Chiari, L. Trainotti, E. Fursa, Dmitry Bray, Igor Brunger, M. 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. 2011 Journal Article http://hdl.handle.net/20.500.11937/37740 10.1140/epjd/e2011-20333-7 Springer restricted
repository_type	Digital Repository
institution_category	Local University
institution	Curtin University Malaysia
building	Curtin Institutional Repository
collection	Online Access
description	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.
format	Journal Article
author	Zecca, A. Chiari, L. Trainotti, E. Fursa, Dmitry Bray, Igor Brunger, M.
spellingShingle	Zecca, A. Chiari, L. Trainotti, E. Fursa, Dmitry Bray, Igor Brunger, M. Experimental determination of the scattering length for positron scattering from krypton
author_facet	Zecca, A. Chiari, L. Trainotti, E. Fursa, Dmitry Bray, Igor Brunger, M.
author_sort	Zecca, A.
title	Experimental determination of the scattering length for positron scattering from krypton
title_short	Experimental determination of the scattering length for positron scattering from krypton
title_full	Experimental determination of the scattering length for positron scattering from krypton
title_fullStr	Experimental determination of the scattering length for positron scattering from krypton
title_full_unstemmed	Experimental determination of the scattering length for positron scattering from krypton
title_sort	experimental determination of the scattering length for positron scattering from krypton
publisher	Springer
publishDate	2011
url	http://hdl.handle.net/20.500.11937/37740
first_indexed	2018-09-06T22:39:53Z
last_indexed	2018-09-06T22:39:53Z
_version_	1610899619906060288

Experimental determination of the scattering length for positron scattering from krypton

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