Preliminary Measurement of the K-Shell Ionization Cross Sections of Ti by Positron Impact in the Low Energy Region

TIAN Lixia (田丽霞); LIU Mantian (刘慢天); ZHU Jingjun (朱敬军); AN Zhu (安竹); WANG Baoyi (王宝义); QIU Xiubo (秦秀波)

doi:10.1088/1009-0630/14/5/24

Plasma Science and Technology > 2012 > 14(5): 434-437. > DOI: 10.1088/1009-0630/14/5/24

TIAN Lixia (田丽霞), LIU Mantian (刘慢天), ZHU Jingjun (朱敬军), AN Zhu (安竹), WANG Baoyi (王宝义), QIU Xiubo (秦秀波). Preliminary Measurement of the K-Shell Ionization Cross Sections of Ti by Positron Impact in the Low Energy Region[J]. Plasma Science and Technology, 2012, 14(5): 434-437. DOI: 10.1088/1009-0630/14/5/24

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Preliminary Measurement of the K-Shell Ionization Cross Sections of Ti by Positron Impact in the Low Energy Region

1 Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China 2 East China Institute of Technology, Fuzhou 344000, China 3 Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, CAS, Beijing 100049, China

Funds: Supported by National Natural Science Foundation of China (Nos.10674097, 10774106).

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Received Date: May 16, 2011

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Abstract

Abstract

Measurements were performed of K-shell ionization cross sections of Ti element by 10-30keV positron impact using the thick-target method. The effects of multiple scattering of incident positron and from bremsstrahlung photons and annihilation photons with the thick-target method are discussed with the Monte Carlo code PENELOPE. Meanwhile, the Monte Carlo method is also applied to determine the detection efficiencies of X- and ?-ray detectors. Our experimental K-shell ionization cross sections for Ti element are compared with the DWBA theoretical predictions, and it is found that the agreement of the experimental data and theoretical values is good and this indicates that the experimental method adopted in this study is applicable.
- positron impact,
- ionization cross sections,
- thick-target method,
- Monte Carlo simulation

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