Excitation dynamics of autoionizing states in rubidium atom and molecule Rb2 in electron-atom collisions

1Roman, VI, 1Kupliauskiene, AV, 1Borovik, AA, 1Zatsarinny, OI
1Institute of Electron Physics of the NAS of Ukraine, Uzhgorod
Dopov. Nac. akad. nauk Ukr. 2014, 7:76-81
Section: Physics
Language: Ukrainian

The autoionizing electron spectra in rubidium atoms are investigated in an impact energy range from the excitation threshold of the inner 4p6 subshell up to 660 eV. The energy dependences of the absolute excitation cross sections for ten atomic and one molecular autoionizing states are measured. Basing on theoretical calculations of the energies, cross-sections, and decay probabilities for the 4p5n1l1n2l2 states, the spectroscopic identification of the observed lines is performed.

Keywords: lectron-atom collisions, molecule Rb2, rubidium atom

1. Beutler H. Zs. f. Phys., 1934, 91: 131–142. https://doi.org/10.1007/BF01340555
2. Sansonetti J. E., Martin W. C. J. Phys. Chem. Ref. Data. 2005, 34, No. 4: 1559–2259. https://doi.org/10.1063/1.1800011
3. Spong J., Kmetec J., Wallace S. et al. Phys. Rev. Lett., 1987, 58: 2631–2634. https://doi.org/10.1103/PhysRevLett.58.2631
4. Mendelsohn A., Barty C., Sher M. et al. Phys. Rev. A., 1987, 35: 2095.–2101.
5. Mansfield M.W. D. Astrophys. J., 1978, 364 ; 135–144.
6. Borovik A., Roman V., Kupliauskiene A. J. Phys. B., 2012, 45, No. 4: 045204–045214. https://doi.org/10.1088/0953-4075/45/4/045204
7. Kupliauskiene A., Kerevicius G. Phys. Scr., 2013, 88: 065312–065319. https://doi.org/10.1088/0031-8949/88/06/065305
8. Baig M., Mahmood M., Akram M., Hormes J. J. Phys. B., 1995, 28: 1777–1792. https://doi.org/10.1088/0953-4075/28/9/015
9. Connerade J. Astrophys. J., 1970, 159: 695–702. https://doi.org/10.1086/150343
10. Borovik A., Roman V., Zatsarinny O., Bartschat K. J. Phys. B., 2013, 46, No. 1: 015203–015209. https://doi.org/10.1088/0953-4075/46/1/015203
11. Berezhko E., Kabachnik N. J. Phys. B., 1977, 10: 2467– 2477. https://doi.org/10.1088/0022-3700/10/12/025
12. Nesmeyanov A. The vapor pressure of chemical elements. Moscow: izd-vo AN USSR, 1961 (in Russian).
13. Borovik A., Roman V., Kupliauskiene A. The 4p 6 core excitation of Rb2 by low energy electron impact. In: Abstracts of Contributed Papers, 2013, ICPEAC XXVIII. Lanzhou. China, Th P41.
14. Borovik A. J. Phys. B., 2008, 41: 165205–165207.
15. Roman V. I., Gritsko V. V., Borovik O. O. Nauk. visnyk UzhNU, 2013, No. 34: 139–142 (in Ukrainian).