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Dirac R-matrix with pseudo-states

Badnell, N.R. (2008) Dirac R-matrix with pseudo-states. Journal of Physics B: Atomic, Molecular and Optical Physics, 41 (17). ISSN 0953-4075

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Abstract

We describe the development of the Dirac R-matrix with pseudo-states (DRMPS) method for electron and photon collisions with arbitrary atoms and ions. An N-electron atom is represented by an anti-symmetrized product of single-particle spinors comprising the usual four-component Dirac spinors as well as paired two-component Laguerre spinors (L-spinors). The convergent L-spinor basis forms a discretization of the electron and positron continua. This representation has been implemented quite generally within the general relativistic atomic structure package (GRASP) specifically GRASP0. An (N + 1)th 'scattering' electron is represented by the exact same L-spinor basis plus the usual R-matrix box-state spinors which are chosen so as to form a combined complete finite linearly independent orthogonal basis. The (non-diagonal) Buttle correction is determined consistently. This representation has been implemented quite generally within the Dirac atomic R-matrix code (DARC). Results of some simple model problems are presented which demonstrate the correctness of the implementation. (Abstract from : http://iopscience.iop.org/0953-4075/41/17/175202/pdf/0953-4075_41_17_175202.pdf)

Item type: Article
ID code: 19535
Notes: http://suprimo.lib.strath.ac.uk/primo_library/libweb/action/search.do?cs=frb&frbg=5674652&fctN=facet_frbrgroupid&fctV=5674652&frbg=&dum=true&vid=SUVU01&vl(54032236UI0)=lsr02&vl(96071691UI1)=all_items&srt=rank&indx=1&dstmp=1274886814420&tab=local&ct=search&scp.scps=scope%3A(SU)&vl(freeText0)=Journal%20of%20physics%20b-atomic%20molecular%20and%20optical%20physics&fn=search&mode=Basic&dscnt=0
Keywords: Dirac R-matrix, pseudo-states, (DRMPS) method, electron and photon collisions, arbitrary atoms and ions, Physics
Subjects: Science > Physics
Department: Faculty of Science > Physics
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Depositing user: Strathprints Administrator
Date Deposited: 26 May 2010 16:27
Last modified: 07 Nov 2012 14:59
URI: http://strathprints.strath.ac.uk/id/eprint/19535

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