Electron-impact excitation of the (4d(10)5s) S-2(1/2)-> (4d(9)5s(2)) D-2(3/2) and (4d(10)6s) S-2(1/2) ->(4d(10)6s) 2S(1/ 2) transitions in silver: Experiment and theory

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Marinkovic, B. P. and Tosic, S. D. and Sevic, D. and McEachran, R. P. and Blanco Ramos, Francisco and García, G. and Brunger, M. J. (2021) Electron-impact excitation of the (4d(10)5s) S-2(1/2)-> (4d(9)5s(2)) D-2(3/2) and (4d(10)6s) S-2(1/2) ->(4d(10)6s) 2S(1/ 2) transitions in silver: Experiment and theory. Physical review A, 104 (2). ISSN 2469-9926

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Official URL: https://doi.org/10.1103/PhysRevA.104.022808




Abstract

We present angle-differential and angle-integrated cross sections for electron-impact excitation of the (4d(10)5s) S-2(1/ 2) -> (4d(9)5s(2)) D-2(3/ 2) and (4d(10)5s) S-2(1/ 2) ->(4d(10)6s) S-2(1/ 2) transitions in atomic silver. Experimental data for four incident electron energies between 10 and 60 eV are compared with predictions from our relativistic distorted wave (RDW) and nonrelativistic atomic optical potential models. Agreement between our measured and calculated data is only fair, although in the case of the RDW it is seen to improve with increasing incident electron energy. However, only for the (4d(10)6s) S-2(1/2) excitation process, agreement of our measured data with earlier relativistic convergent close coupling results from McNamara et al. [J. Phys. B 51, 085203 (2018)] was, with a few exceptions, typically observed to be very good, to within the uncertainties on the data.


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©2021 American Physical Society. This work was financially supported, in part, by the Australian Research Council (Project No. DP180101655), the Institute of Physics Belgrade through the Ministry of Education, Science and Technological Development (MESTD) of Serbia, and the Spanish Ministerio de Ciencia e Innovación -MICNN (Project No. PID2019-104727RB-C21) and CSIC (Project No. LINKA 20085). We thank Dr. L. Campbell for his help with some aspects of this paper, and Professor D. V. Fursa for providing us with tables of his RCCC(80) results. R.P.M. acknowledges very valuable discussions with Professor A. D. Stauffer in the early stages of the development of the innershell RDW method.

Uncontrolled Keywords:Distorted-wave calculation; Elastic-scattering; Imaginary part; Cross-sections; Amplitudes; Elements; Helium; Model
Subjects:Sciences > Physics > Nuclear physics
ID Code:67967
Deposited On:28 Sep 2021 08:10
Last Modified:28 Sep 2021 10:02

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