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

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

2003-05-14

arxiv.org/abs/physics/0305061v2

Phys. Rev. A 72 (2005) 022725

Physics

Atomic Physics

6 pages, 9 figures

Scientific paper

10.1103/PhysRevA.72.022725

We present here triple differential cross sections for ionization of hydrogen atoms by electron impact at 1eV, 0.5eV and 0.3eV 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 \cite{DC02} for these energies. With this, we are able to demonstrate that the hyperspherical partial wave theory yields good cross sections from 30 eV \cite{DPC03} down to near threshold for equal energy sharing kinematics.

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