8th International Topical SPARC Workshop
and SPARC Lecture Days
Moscow, September 5-10, 2011 -
Information

Title:	Prof.
Family Name:	Tupitsyn
First Name:	Ilya
Gender:	male
E-Mail:	tuppcqnt1.phys.spbu.ru
Affiliation for Badge:	St. Petersburg State University
Institute:	Department of Physics, St. Petersburg State University
Address (Street):	Ulianovskaya 1, Petrodvorets,
Postal Code, City:	190504, St.Petergoff, St.Petersburg
Country:	Russia
Phone:	+7 (812) 323-5461
Fax:
Arrival Date:	September 4
Departure Date:	September 10
Type of Participation:	Regular
Are you a member of the SPARC collaboration ?:	No
I register for:	Both
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Contribution Type:
Author(s):	I.I. Tupitsyn, Y.S. Kozhedub, V.M. Shabaev, G.B. Deyneka, G. Plunien, and Th. Stoehlker
Institute(s):	Department of Physics, St. Petersburg State University,Ulianovskaya 1, Petrodvorets, 198504 St.Petersburg, Russia Institut für Theoretische Physik, TU Dresden, Mommsenstrasse 13, D-01062 Dresden, Germany Gesellschaft für Schwerionenforschung, Planckstrasse 1, D-64291 Darmstadt, Germany 5 Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, D-69120
Title:	Dirac-Fock-Sturm method for calculations of the charge-transfer and electron-excitation probabilities in low-energy heavy-ion collisions
Abstract:	A new method for solving the time-dependent two-center Dirac equation is considered [1]. The time-dependent Dirac wave function is presented as a sum of atomic-like Dirac-Sturm orbitals, localized at the ions. These orbitals are obtained by solving numerically the finite-difference one-center Dirac and Dirac-Sturm equations, including the Coulomb potential of the second ion in the monopole approximation. To investigate the role of the relativistic effects, the charge transfer cross sections for Ne$^{9+}$(1s)--Ne$^{10+}$ (at energies from 0.1 to 10 MeV/u) and U$^{91+}$(1s)--U$^{92+}$ (at energies from 6 to 10 MeV/u) collisions are calculated in both relativistic and nonrelativistic cases. In this work the method is generalized to calculate the charge transfer probabilities for collisions of H-like ions with neutral atoms. The results of the calculation for the Ne--F$^{8+}(1s)$ collisions are compared with the previous theoretical results [2] and with experiment [3]. [1] I.I. Tupitsyn, Y.S. Kozhedub, V.M. Shabaev, G.B. Deyneka, S. Hagmann, C. Kozhuharov, G. Plunien, and Th. Stoehlker, Phys.Rev A 82, 042701 (2010). [2] W. Fritsch, C.D. Lin, Phys.Rev.A, 31, 1164 (1985). [3] S. Hagmann et.al., Phys.Rev.A, 36, 2603 (1987).

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