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Double differential cross sections for ionization of H by 75 keV proton impact: Assessing the role of correlated wave functions |
| Jungang Fan(范军刚)1,3, Xiangyang Miao(苗向阳)1,2,3,†, and Xiangfu Jia(贾祥福)1,2,3,‡ |
| 1 Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, Shanxi Normal University, Linfen 041004, China; 2 College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China; 3 College of Chemistry and Materials Science, Shanxi Normal University, Linfen 041004, China |
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Abstract The effect of final-state dynamic correlation is investigated for ionization of atomic hydrogen by 75-keV proton impact by analyzing double differential cross sections. The final state is represented by a continuum correlated wave (CCW-PT) function which accounts for the interaction between the projectile and the target nucleus (PT interaction). The correlated final state is nonseparable solutions of the wave equation combining the dynamics of the electron motion relative to the target and projectile, satisfying the Redmond's asymptotic conditions corresponding to long range interactions. The transition matrix is evaluated using the CCW-PT function and the undistorted initial state. Both the correlation effects and the PT interaction are analyzed by the present calculations. The convergence of the continuous correlated final state is examined carefully. Our results are compared with the absolute experimental data measured by Laforge et al. [Phys. Rev. Lett. 103, 053201 (2009)] and Schulz et al. [Phys. Rev. A 81, 052705 (2010)], as well as other theoretical models (especially the results of the latest non perturbation theory). We have shown that the dynamic correlation plays an important role in the ionization of atomic hydrogen by proton impact. While overall agreement between theory and the experimental data is encouraging, detailed agreement is still lacking. However, such an analysis is meaningful because it provides valuable information about the dynamical correlation and PT interaction in the CCW-PT theoretical model.
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Received: 01 July 2020
Revised: 21 August 2020
Accepted manuscript online: 14 September 2020
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PACS:
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03.65.Nk
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(Scattering theory)
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34.80.Dp
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(Atomic excitation and ionization)
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34.50.Fa
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(Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11974229 and 11274215). |
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Corresponding Authors:
†Corresponding author. E-mail: sxxymiao@126.com ‡Corresponding author. E-mail: jiaxf@dns.sxnu.edu.cn
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Cite this article:
Jungang Fan(范军刚), Xiangyang Miao(苗向阳), and Xiangfu Jia(贾祥福) Double differential cross sections for ionization of H by 75 keV proton impact: Assessing the role of correlated wave functions 2020 Chin. Phys. B 29 120301
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