ELASTIC-SCATTERING OF ELECTRONS AND POSITRONS BY ATOMS - SCHRODINGER AND DIRAC PARTIAL-WAVE ANALYSIS

被引：153

作者：

SALVAT, F ^{[1
]}

MAYOL, R ^{[1
]}

机构：

[1] SOC CATALANA FIS,E-08028 BARCELONA,SPAIN

来源：

COMPUTER PHYSICS COMMUNICATIONS | 1993年 / 74卷 / 03期

关键词：

ELASTIC SCATTERING; STATIC FIELD APPROXIMATION; PARTIAL-WAVE ANALYSIS; SCHRODINGER PHASE SHIFTS; DIRAC PHASE SHIFTS; MONTE-CARLO SIMULATION;

D O I：

10.1016/0010-4655(93)90019-9

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Two FORTRAN 77 codes are described which provide a complete description of elastic scattering of electrons and positrons by atoms using the static field approximation with non-relativistic (Schrodinger) and relativistic (Dirac) partial wave analysis. The delivered information includes phase shifts, differential cross-sections, scattering amplitudes and percentage points of the single scattering angular distribution. The scattering field may be internally generated by the codes (which incorporate an accurate analytical approximation to the Dirac-Hartree-Fock-Slater field of free atoms) or read from the input file. Solid state effects for scattering in solids are described by means of a simple muffin-tin model. For electron scattering, exchange corrections are also taken into account. Phase shifts are obtained by using the RADWEQ subroutine package [Comput. Phys. Commun. 62 (1991) 65] to solve the radial equations. The relativistic code provides reliable cross-section data for kinetic energies between approximately 1 keV and approximately 1 MeV.

引用

页码：358 / 374

页数：17