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

Abstract

A final state wave function of multiple scattering theory developed by Das and seal is utilized in the present study to calculate the triple differential cross sections (TDCS) for the ionization of metastable 3S state hydrogen atoms at incident electron energy of 250 eV with the exchange effects in the asymmetric coplanar geometry for various kinematic conditions. Our present calculation results are compared with the available hydrogenic ground state experimental data and other existing theoretical results. A good qualitative agreement is shown with those of compared results of the present study specifically with hydrogenic ground state experimental data and metastable 2S and 2P state with exchange effect results. These new results offer an extensive scope for experimental verification in such ionization process.

Ionization of Hydrogenic 3d State by Electron Impact

“…, present first Born results make a petty peak and on the other side, current direct configuration make a short lobe with 3S-state results [20] and current exchange result. In the binary field, the magnitude of obtained exchange outcome is decreased from other compared results [15], [19], [20].…”

“…In Figure 2(d), current attained first Born configuration conjoined with 2S-state [15] and 3S-state [19] In Figure 2(e), existent first Born curve provides almost similar behavior with 3S-state [19], 3P-state [20], present direct and exchange curves but shows a gross difference with the results of 2S-state [15] in recoil field at about 1 45 θ =…”

“…In Figure 2(f), present first born configuration meets contrarily with 3S-state [19] configuration while present direct and present exchange configuration meets reversely with 3P-state [20] configuration in the recoil field at about . Theory: Black dash curve, Black continuous curve, Red perfect curve exhibit present first Born, direct and exchange effect results respectively.…”

“…Theory: Black dash curve, Black continuous curve, Red perfect curve exhibit present first Born, direct and exchange effect results respectively. Also Green dash dotted curve display hydrogenic 3P-state result [20], Magenta dotted curve expose hydrogenic 3S-state result [19] and Blue dash dotted curve demonstrate hydrogenic 2S-state result [15].…”

“…The existent novel theoretical results make a new dimension on ionization of hydrogenic metastable states. Current results are compared with previous related theories [15], [19], [20].…”