Published November 1, 1988 | Version v1
Journal article Metadata-only

Near-threshold photoabsorption cross sections for nonhydrogenic ions

Creators

  • 1. Lawrence Livermore National Laboratory, University of California, Livermore, California 94550

Description

Nonhydrogenic photoabsorption cross sections near threshold are well approximated by radial dipole-matrix elements between phase-shift-modulated regular and irregular Coulomb continuum and quantum-defect bound-state wave functions. Results based upon numerical quadratures are inaccurate for high-Rydberg transitions, while previous analytical formulas are difficult to evaluate near threshold. A simple analytic algorithm for the near-threshold region based on the analytic properties of the Coulomb functions in the complex energy plane is presented

Additional details

Publishing Information

Journal Title
Physical Review, A
Journal Volume
38
Journal Issue
9
Series
Phys. Rev., A.
Journal Page Range
4633-4638
ISSN
0556-2791
CODEN
PLRAA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
20013609
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS; S74: ATOMIC AND MOLECULAR PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ABSORPTION; ABSORPTION SPECTRA; ALGORITHMS; ATOMIC IONS; ATTENUATION; COMPUTER CALCULATIONS; CROSS SECTIONS; ELECTRONIC STRUCTURE; EXPERIMENTAL DATA; MATRIX ELEMENTS; PHOTON-ION COLLISIONS; RYDBERG STATES
Descriptors DEC
CHARGED PARTICLES; COLLISIONS; DATA; ENERGY LEVELS; EXCITED STATES; INFORMATION; ION COLLISIONS; IONS; NUMERICAL DATA; PHOTON COLLISIONS; SPECTRA