Differential Cross Sections for Ionization of Argon by 1 keV Positron and Electron Impact

被引：1
|
作者：
Gavin, J. [2 ]
DuBois, R. D. [2 ]
de Lucio, O. G. [1 ]
机构：
[1] Univ Nacl Autonoma Mexico, Inst Fis, Apartado Postal 20364, Mexico City 01000, DF, Mexico
[2] Missouri Univ Sci & Technol, Dept Phys, Rolla, MO 65409 USA
来源：
XXVIII INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC) | 2014年 / 488卷
基金：
美国国家科学基金会;
关键词：
ATOMS;
D O I：
10.1088/1742-6596/488/1/012058
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Differential information was generated by establishing coincidences and imposing conditions on data recorded for target ions, scattered projectiles, and ejected electrons, as a function of projectile energy loss and scattering angles; in order to describe the interaction between a positron (electron) 1 keV beam and a simple Ar jet. Single ionization triply differential cross section (TDCS) results exhibit two distinct regions (lobes) for which binary (events arising from 2-body interaction) and recoil (events which can only be produced by many-body interactions) interactions are associated. Results indicate that binary events are significantly larger for positron impact, in accordance with theoretical predictions. A similar feature is found for different energy losses and scattering angles. Intensity of the recoil lobe for both projectiles, positron and electron, is observed to depend on the energy loss and scattering angle. Also, it can be noticed that for positron impact the recoil interactions intensity is larger than that observed for electron impact.
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页数：6
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