dc.contributor.author |
Ray, H |
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dc.date.accessioned |
2008-08-14T05:20:25Z |
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dc.date.available |
2008-08-14T05:20:25Z |
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dc.date.issued |
2002-05 |
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dc.identifier.citation |
Nuclear Instruments and Methods in Physics Research Section B, Vol. 192, No. 1 - 2, pp. 191 - 196 |
en |
dc.identifier.issn |
0168-583X |
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dc.identifier.uri |
http://hdl.handle.net/2248/3116 |
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dc.description |
Restricted Access |
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dc.description.abstract |
Ionizations in Ps-atom scattering are studied using three different types of target: H, He and Li. Three different types of ionization cross-sections are compared, considering a large number of excitation channels of both the atoms in each system. The findings in Ps-Li system is much different from Ps-H and Ps-He. The target-ionization and both ionization are competeting with each other in Ps-H and Ps-He systems; whereas in Ps-Li, both ionizations are negligible and target-ionization is competeting with Ps-ionization. However, Ps-ionization is important in all the three systems. The slow rate of falling of the total ionization cross-sections with the increase of energy, indicates the importance of ionization at all the energies above thresholds. Comparison of the total ionization cross-section curves of the three different systems indicates the importance of the forces due to mutual polarization in Ps-atom scattering through shifting of ionization peaks. |
en |
dc.format.extent |
3894 bytes |
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dc.format.mimetype |
application/pdf |
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dc.language.iso |
en |
en |
dc.publisher |
Elsevier |
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dc.relation.uri |
http://dx.doi.org/10.1016/S0168-583X(02)00867-4 |
en |
dc.subject |
Ionization |
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dc.subject |
Cross-section |
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dc.subject |
Scattering |
en |
dc.subject |
Positronium |
en |
dc.subject |
First Born approximation |
en |
dc.title |
Ionizations in Ps-atom scattering |
en |
dc.type |
Article |
en |