Electron Impact Ionization of Metastable 3S-State Hydrogen Atoms by Electrons in Coplanar Geometry

Abstract

In this work we have calculated first born triple differential cross sections (TDCS) for ionization of metastable 3Sstate 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.

The Triple Differential Cross Sections for Electron Impact Ionization of Metastable 3s State Hydrogen Atoms with Exchange Effect

“…It is exciting to observe that our present results show a good qualitative agreement with the compared results of present first born result [48], the hydrogenic ground state result of BBK model [34], the second born approximation [21], the experimental data [15] and the second born experiment of 2P-state [47] exchange effects results. Our present result shows a fall in the recoil region and two prominent peaks in binary region.…”

“…In the Figure 8 and Figure 9 the magnitude of the present results smaller than the present first Born results [48]. The characteristic features of the cross section…”

“…Short dash curve focuses hydrogenic ground state second born result [21]; Dash-dotted curve shows hydrogenic ground state BBK model [34] and filled round shows hydrogenic ground state experiments [15]. [48]. Dash curve shows the second born 2P state result [47].…”

“…Theory: Full curve reflects the present calculation. Dash curve represent the first born 3S-state result [48]. Short dash curve shows the second born 2P-state result [47].…”

Calculations of Triple Differential Cross-Sections for the Ionization of H (3S) by Electron Impact

“…Theory: Full filled double curve reflects the present calculation. Full single curve represent the first born 3S state result [42]. Dash curve shows the second born 2P state result [39].…”