S. A. Yakovleva, A. K. Belyaev, A. A. Buchachenko
Price: 50 руб.
We have theoretically investigated charge exchange processes occurring at low collisions of Rb atoms with Ca and Yb cations based on quantum-chemical accurate data for adiabatic potential energy curves and coupling matrix elements. The calculated cross sections exhibit all features of the Langevin ion-atom collision regime including a rich structure associated with centrifugal barrier tunneling (orbiting) resonances. We have shown that in contrast to Ca+ + Rb collisions the dominant process in Yb+ + Rb
collisions is the radiative charge transfer
Keywords: cold collisions, charge exchange, nonadiabatic transitions, rubidium
atoms, calcium, ytterbium cations.
REFERENCES
1. Doyle, J., Friedrich, B., Krems, R.V., & Masnou-Seeuws, Editorial: Quo vadis,
cold molecules? F. European Physical Journal D, 2004, 31, 149–164.
2. Zipkes, C., Palzer, S., Ratschbacher, L., Sias, C., & Köhl, M. Cold Heteronuclear
Atom-Ion Collisions. Physical Review Letters, 2010, 105, 133201.
3. Hall, F.H.J., Eberle, P., Hegi, G., Willitsch, S., Raoult, M., Aymar, M., &
Dulieu, O. Ion-neutral chemistry at ultralow energies: dynamics of reactive collisions
between laser-cooled Ca+ions and Rb atoms in an ion-atom hybrid trap. Molecular
Physics, 2013, Vol. 111, Iss. 14–15, p. 2020.
4. Mott, N.F. & Massey, H.S.W. The Theory of Atomic Collisions. 1949, Clarendon
Press, Oxford.
5. Macias, A. & Riera, A. Ab initio quantum chemistry in the molecular model of
atomic collisions. Physics Reports, 1982, Vol. 90, 299–376.
6. Grosser, J. Z. Journal of Physics D, 1986, 3, 39.
7. Belyaev, A.K., Egorova, D., Grosser, J., & Menzel, T. Electron translation and
asymptotic couplings in low-energy atomic collisions. Physical Review A 2001, 64,
052701.
8. MOLPRO, version 2010.1, a package of ab initio programs. 2010. Werner, H.-J.,
Knowles, P.J., Lindh, R., Manby, F.R., Schütz, M., and others. Cardiff, UK.
9. Tacconi, M., Gianturco, F.A., & Belyaev, A.K. Computing charge-exchange cross
sections for Ca+ collisions with Rb at low and ultralow energies. Physical Chemistry
Chemical Physics, 2011, 13, 19156–19164.
10. Sayfutyarova, E.R., Buchachenko, A.A., Yakovleva, S.A., & Belyaev, A.K.
Charge transfer in cold Yb+Rb collisions. Physical Review, A 2013, 87, 052717.
11. Lamb, H.D.L., McCann, J.F., McLaughlin, B.M., Goold, J., Wells, N., & Lane, I.
Structure and interactions of ultracold Yb ions and Rb atoms. Physical Review A, 2012,
86, 022716.
12. Grosser, J., Menzel, T., & Belyaev, A.K. Approach to electron translation in
low-energy atomic collisions. Physical Review A, 1999, 59, 1309.
13. Belyaev, A.K. Revised Born-Oppenheimer approach and a reprojection method
for inelastic collisions. Physical Review A, 2010, 82, 060701(R).
14. Guitou, M., Belyaev, A.K., Barklem, P.S., Spiel fi edel, A., & Feautrier, N. Inelastic Mg+H collision processes at low energies. Journal of Physics B: Atomic, Molecular
and Optical Physics, 2011, 44, 035202.
15. Belyaev, A.K. On the energy dependence of inelastic cross sections. European
Journal of Physics D, 2007, 44, 497–505.
16. Belyaev, A.K., Yakovleva, S.A., Tacconi, M., & Gianturco, F.A. Resonances
in Ca++Rb nonadiabatic collisions at ultralow energies. Physical Review A, 2012, 85,
042716.
17. Sando, K.M. The emission of radiation near 600 Å by helium. Molecular Physics, 1972, 21, 439–447.
18. Julienne, P.S. Theory of rare gas–group VI 1 S–1 D collision-induced transitions.
The Journal of Chemical Physics, 1978, 68, 32.
19. Julienne, P.S. & Mies, F.H. Nonadiabatic theory of atomic line broadening:
Redistribution calculations for Sr(1P<-1S)+Ar. Physical Review A, 1986, 34, 3792.
20. Zygelman, B. & Dalgarno, A. Radiative quenching of He(2 ) induced by collisions with ground-state helium atoms. Physical Review A, 1988, 38, 1877.
21. Gianturco, F.A. & Gori Giorgi, P. Radiative Association Rates and Structure
of Resonances for Li and Li+ Colliding with H and H+. Astrophysical Journal, 1997,
479, 560.
22. Cohen, J.S. & Bardsley, J.N. Calculation of radiative single-charge-transfer cross
sections for collisions of with He at low energy. Physical Review A, 1978, 18, 1004.
23. Tellinghuisen, J. & Julienne, P. S. A simple sum rule for total radiative decay
rates: Comparison of quantal and classical methods for diatomics. Journal of Chemical Physics, 1984, 81, 5779.
24. Gustafsson, M., Antipov, S.V., Franz, J., & Nyman, G. Re fi ned theoretical study
of radiative association: Cross sections and rate constants for the formation of SiN.
Journal of Chemical Physics, 2012, 137, 104301.
25. Makarov, O.P., Cote, R., Michels, H., & Smith, W.W. Radiative charge-transfer
lifetime of the excited state of (NaCa)+. Physical Review A, 2003, 67, 042705.
26. Cote, R. & Dalgarno, A. Ultracold atom-ion collisions. Physical Review A,
2000, 62, 012709.
27. Zhang, P., Dalgarno, A., Cote, R., & Bodo, E. Physical Chemistry Chemical
Physics, 2011, 13, 19026.
28. Zhang, P., Dalgarno, A., & Cote R. Scattering of Yb and Yb+. Physical Review
A, 2009, 80, 030703(R).
