DISSOCIATIVE CROSS-SECTIONS OF H-2 BY ELECTRON-IMPACT

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39282

Title:	DISSOCIATIVE CROSS-SECTIONS OF H-2 BY ELECTRON-IMPACT
Authors:	LIU,JW;HAGSTROM,S
Contributors:	物理研究所
Keywords:	FAST CHARGED-PARTICLES;BETHE THEORY;INELASTIC-COLLISIONS;QUANTUM DEFECTS;EXCITED-STATES;MOLECULES;SCATTERING;EXCITATION;HYDROGEN;ENERGY
Date:	1994
Issue Date:	2010-07-08 14:10:46 (UTC+8)
Publisher:	中央大學
Abstract:	In the reflection approximation, the dissociative cross sections of H2 by electron impact for production of H(1s) and H(2s) are accurately computed in the Bethe approximation using highly correlated electronic wave functions. It is found that the calculated Bethe cross sections, expected to be valid only for high-incident electron energies, agree surprisingly well with other theoretical values for low impact energies, where electron exchange must surely be included. The discrepancy between theory and experiment reported for total production of H(2s) at incident energies above 500 eV may be attributed to lack of inclusion in the theoretical model of double excitations, particularly those corresponding to optically forbidden transitions.
Relation:	PHYSICAL REVIEW A
Appears in Collections:	[Graduate Institute of Physics] journal & Dissertation

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