九大原子核セミナー

2011年10月18日(火) 16:00

講師：Daniel Baye 氏 (Brussels大学)
演題：The R-matrix theory
場所：理学部 物理第3講義室(理学部2号館2階2249室)

概要：
Two variants of the R-matrix method are commonly used.
(i) The "phenomenological" R-matrix method inspired by
Wigner's original idea is a technique to parametrize various
types of cross sections at low energies. It is mainly (or
uniquely) used in nuclear physics.
(ii) The "calculable" R-matrix method is a calculational
tool to derive scattering and bound-state properties from
the Schrödinger equation in a large variety of physical problems.
It was developed rather independently in nuclear physics and,
mostly, in atomic physics.
Both variants are first illustrated by simple examples.
Some misconceptions on the R-matrix method are discussed.
The calculable R-matrix method on a Lagrange mesh is presented.
It can be applied to the resolution of the resonating-group
equation and to various aspects of the CDCC method.