München 2006 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 25: Theorie

HK 25.5: Vortrag

Dienstag, 21. März 2006, 18:00–18:15, B

Inversion of phase shifts to potentials by the generalized Cox-Thompson inverse scattering method at fixed energy — •Oliver Melchert¹, Werner Scheid¹, and Barnabás Apagyi² — ¹Institut für Theoretische Physik der Justus-Liebig-Universität, D-35392 Giessen, Germany — ²Department of Theoretical Physics, Budapest University of Technology and Economics, H-1111 Budapest, Hungary

Cox-Thompson inverse scattering method at fixed energy has been generalized to treat complex phase shifts derived from experiments. Results for n−α inverse potentials compare nicely to those obtained by microscopic optical model calculations. Results for n− ¹²C data show characteristic features which can be reproduced by models.

The case of charged particles can be handled by a transformation of the S-matrix, which is transformed to a S-matrix with an asymptotic constant potential. The latter S-matrix then serves as input for the inversion procedure designed for the case of uncharged particles.