Published December 9, 2005 | Version v1
Journal article Metadata-only

Partial Photoionization Cross Sections and Angular Distributions for Double Excitation of Helium up to the N=13 Threshold

Creators

  • 1. Institut fuer Kernphysik, Universitaet Frankfurt, D-60438 Frankfurt (Germany)
  • 2. Max-Planck-Institut fuer Physik komplexer Systeme, D-01187 Dresden (Germany)
  • 3. Fu Jen Catholic University, Taipei, Taiwan (China)

Description

Partial photoionization cross sections σN(Eγ) and photoelectron angular distributions βN(Eγ) were measured for the final ionic states He+(N>4) in the region between the N=8 and N=13 thresholds (Eγ>78.155 eV) using the cold target recoil ion momentum spectroscopy technique (COLTRIMS). Comparison of the experimental data with two independent sets of theoretical predictions reveals disagreement for the branching ratios to the various HeN+ states. The angular distributions just below the double ionization threshold suggest an excitation process for highly excited N states similar to the Wannier mechanism for double ionization

Additional details

Identifiers

DOI
10.1103/PhysRevLett.95.243003;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
95
Journal Issue
24
Journal Page Range
p. 243003-243003.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37015673
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ANGULAR DISTRIBUTION; BRANCHING RATIO; CATIONS; COMPARATIVE EVALUATIONS; CROSS SECTIONS; EV RANGE 10-100; EXCITATION; EXCITED STATES; EXPERIMENTAL DATA; HELIUM; HELIUM IONS; PHOTOELECTRON SPECTROSCOPY; PHOTOIONIZATION; PHOTON-ATOM COLLISIONS; RECOILS
Descriptors DEC
ATOM COLLISIONS; CHARGED PARTICLES; COLLISIONS; DATA; DIMENSIONLESS NUMBERS; DISTRIBUTION; ELECTRON SPECTROSCOPY; ELEMENTS; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EV RANGE; EVALUATION; FLUIDS; GASES; INFORMATION; IONIZATION; IONS; NONMETALS; NUMERICAL DATA; PHOTON COLLISIONS; RARE GASES; SPECTROSCOPY

Optional Information

Notes
(c) 2005 The American Physical Society