Published December 24, 1990 | Version v1
Journal article Metadata-only

Near-threshold vibrational excitation of H2 by electron impact: Resolution of discrepancies between experiment and theory

Creators

  • 1. Electron Physics Group, Research School of Physical Sciences, Australian National University, Canberra (Australia)
  • 2. Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder, CO (USA)
  • 3. Department of Physics and Astronomy, University of Oklahoma, Norman, OK (USA)

Description

New measurements and calculations of near-threshold (0.5--5.0 eV) e-H2 vibrational-excitation cross sections challenge previous determinations based on transport analysis. Elastic and v0=0→v=1 cross sections measured in a crossed electron-molecular-beam apparatus agree well with values calculated using a vibrational close-coupling theory with a separable represetnation of exchange, particularly at energies below 2.0 eV, but are incompatible with cross sections derived via analysis of electron-swarm transport data

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
65
Journal Issue
26
Series
Phys. Rev. Lett.
Journal Page Range
3253-3256
ISSN
0031-9007
CODEN
PRLTA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
22052849
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS; S74: ATOMIC AND MOLECULAR PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
CORRELATIONS; CROSS SECTIONS; ELASTIC SCATTERING; ELECTRON-MOLECULE COLLISIONS; EXCITED STATES; EXPERIMENTAL DATA; HYDROGEN; MOLECULAR BEAMS; RESOLUTION; THEORETICAL DATA; THRESHOLD ENERGY; VIBRATIONAL STATES
Descriptors DEC
BEAMS; COLLISIONS; DATA; ELECTRON COLLISIONS; ELEMENTS; ENERGY; ENERGY LEVELS; INFORMATION; MOLECULE COLLISIONS; NONMETALS; NUMERICAL DATA; SCATTERING