Ionization of hydrogen atoms by electron impact at 1, 0.5, and 0.3 eV above threshold

Journal Article · Mon Aug 15 04:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.022725· OSTI ID:20718145

Das, J N; Paul, S; Chakrabarti, K ^[1]

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1. Department of Applied Mathematics, University College of Science, 92 A.P.C. Road, Calcutta 700 006 (India)

We present here triple differential cross sections for ionization of hydrogen atoms by electron impact at 1, 0.5, and 0.3 eV energy above threshold, calculated in the hyperspherical partial wave theory. The results are in very good agreement with the available semiclassical results of Deb and Crothers [Phys. Rev. A 65, 052721 (2002)] for these energies. With this, we are able to demonstrate that the hyperspherical partial-wave theory yields good cross sections from 30 eV [Phys. Rev. A 67, 042717 (2003)] down to near threshold for equal-energy-sharing kinematics.

• OSTI ID: 20718145
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
DIFFERENTIAL CROSS SECTIONS
ELECTRON-ATOM COLLISIONS
ELECTRONS
EV RANGE
HYDROGEN
IONIZATION
PARTIAL WAVES
SEMICLASSICAL APPROXIMATION