Abstract
In this work we have calculated first born triple differential cross sections (TDCS) for ionization of metastable 3S- state hydrogen atoms by electrons. In this study the final state wave function is described by a multiple scattering theory for ionization of hydrogen atoms by electrons. Results show qualitative agreement with other existing theoretical results for ionization of hydrogen atoms from metastable 2S-state and 2P-state. There are no other available results for ionization of hydrogen atoms from metastable 3S-state. The present result offers an extensive scope for experimental verifications in such ionization process.
Highlights
Electron impact ionization by charged particles has been known for nearly about five decades
In this segment we explore the ionization of atomic hydrogen at metastable 3S-state by electrons
We compared the result with the measured values of 2S-state first born results [20] and with the previous 2P-state first born results [26 ].We have calculated the first born triple differential cross sections (TDCS) for ionization process at high incident energy = 250 eV where the ejected angles ( ) varies and the scattered angles ( ) are fixed
Summary
Electron impact ionization by charged particles has been known for nearly about five decades. BBK theory of Brauner et al [7] gives qualitatively good results on ionization of hydrogen atoms by electrons and positrons considering at intermediate to high energy level Das and Seal [19] gives better quantitative results. For ionization of hydrogen atoms by electrons from metastable 3S-state there are no such theoretical and experimental results on triple differential cross section. We have calculated the first born triple differential cross sections (TDCS) for ionization of metastable 3S-state hydrogen atoms by 250 eV incident energy following a multiple scattering theory of Das and Seal [19]. We obtained very interesting results for triple differential cross sections (TDCS) for ionization of metastable 3S - state hydrogen atoms by electrons at various kinematic conditions applying the multiple scattering theory of Das and Seal [19]
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