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Electron-capture Process Induced by Bare Ion Impact on Biological Targets

Journal of Energy and Power Engineering 2019年第11期13卷 413-426页

作者： subhajit samaddar Karunamoy Purkait Saheb Halder Abhoy Mondal Chittaranjan Mandal Malay Purkait Department of Physics Ramakrishna Mission Residential CollegeNarendrapurKolkata 700103India Department of Physics Ramsaday CollegeAmtaHowrah 711401India

Within the framework of independent electron approach,the prior form of boundary corrected continuum intermediate state(BCCIS)approximation is employed to calculate the cross sections for total single electron capture in collision of bare ions(H^+,He^2+ and Li^3+)with biological molecules in the intermediate to high energy *** a suitable choice of the distorting potential,the boundary condition is satisfied with a proper account of the intermediate continuum *** cross sections have been calculated from 25 keV/amu to 10 MeV/*** have approximated the cross sections for molecular targets by the linear combination of atomic cross sections weighted by the effective occupation electron ***,the multi-electronic problem is reduced to a mono-electronic one using a version of the independent electron approximation.A detailed analysis on the contributions from different molecular orbitals to total cross sections is *** the present investigation,we observe clearly the importance of the core contribution in the change of slope of the TCS ***,analysis has been made on the cross section per target electron resulting in achievement of a‘universal'cross ***,some negligible discrepancies are observed for the case of the CH4 *** present computed results in prior from of BCCIS method have been compared with the available theoretical and experimental *** found that our computed results are in good agreement with the experimental findings.

关键词： Collision capture cross sections

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