Abstract
Abstract
The single-center convergent close coupling (CCC) method has been applied to positron scattering from the oxygen atom. Cross sections have been calculated for total, elastic, momentum transfer, total ionization, inelastic, and excitation scattering processes from threshold to 5000 eV. Due to their relevance in transport studies, we also present stopping power and mean excitation energy results. Low-energy studies have been conducted to calculate scattering length, the hidden Ramsauer–Townsend minimum, and the energy of the positron virtual state. CCC-scaled complex optical potential calculations are utilized to calculate positronium-formation, direct ionization, and values between the positronium-formation and ionization thresholds. Good agreement is generally observed at high energies with past theory, electron-atomic oxygen experiment, and halved electron/positron O$$_2$$
2
experiment. Large discrepancies, however, have been found between current and previous calculations for positronium-formation cross section and for low-energy elastic scattering cross section.
Graphic Abstract
Publisher
Springer Science and Business Media LLC
Subject
Atomic and Molecular Physics, and Optics
Reference77 articles.
1. H. Watabe, Y. Ikoma, Y. Kimura et al., Ann. Nucl. Med. 20, 583 (2006). https://doi.org/10.1007/BF02984655
2. Y. Wang et al., Oncotarget 8, 51652 (2017). https://doi.org/10.18632/oncotarget.18366
3. C. Makochekanwa et al., New J. Phys. 11, 103036 (2009). https://doi.org/10.1088/1367-2630/11/10/103036
4. N. Mott, H. Massey, The theory of atomic collisions. Nucl. Phys. (1966). https://doi.org/10.1038/167165A0
5. H. Massey, E. Burhop, Electronic and Ionic Impact Phenomena (Oxford University Press, Oxford, 1969)
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献