Electron-impact excitation of the (5s(2)5p) P-2(1/2) -> (5s(2)6s) S-2(1/2) transition in indium: Theory and experiment


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Hamilton, K. R. and Zatsarinny, O. and Bartschat, K. and Rabasovic, M. S. and Sevic, D. and Marinkovic, B. P. and Dujko, S. and Atic, J. and Fursa, D. V. and Bray, I. and McEachran, R. P. and Blanco Ramos, Francisco and García, G. and Stokes, P. W. and White, R. D. and Brunger, M. J. (2020) Electron-impact excitation of the (5s(2)5p) P-2(1/2) -> (5s(2)6s) S-2(1/2) transition in indium: Theory and experiment. Physical review A, 102 (2). ISSN 2469-9926

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Official URL: https://doi.org/10.1103/PhysRevA.102.022801


We present angle-integrated and angle-differential cross sections for electron-impact excitation of the (5s(2)5p) P-2(1/2) -> (5s(2)6s) S-2(1/2) transition in atomic indium. Experimental data for six incident electron energies between 10 and 100 eV are compared with predictions from semirelativistic and fully relativistic B-spline R-matrix calculations, as well as a fully relativistic convergent close-coupling model. Agreement between our measured and calculated data is, with a few exceptions, found to be typically very good. Additionally, the agreement between the present theoretical predictions is generally excellent, with the remaining small deviations being associated with the slightly different, although still very accurate, descriptions of the target structure. Agreement between the present results and an earlier relativistic distorted-wave computation [T. Das, R. Srivastava, and A. D. Stauffer, Phys. Lett. A 375, 568 (2011)] was, however, found to be marginal, particularly at 10 and 20 eV.

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©2020 American Physical Society. The work of K.R.H., O.Z., and K.B. was supported by the U.S. National Science Foundation under Grants No. OAC-1834740 and No. PHY-1803844, and by the XSEDE supercomputer allocation Grant No. PHY-090031. The (D)BSR calculations were carried out on Stampede2 at the Texas Advanced Computing Center. The work of D.V.F. and I.B. was supported by the Australian Research Council and resources provided by the Pawsey Supercomputing Centre with funding from the Australian Government and the Government of Western Australia. F.B. and G.G. acknowledge partial financial support from the Spanish Ministry MICIU (Project No. PID2019-104727RB-C21) and CSIC (Project No. LINKA20085). This work was also financially supported, in part, by the Australian Research Council (Project No. DP180101655), the Ministry of Education, Science and Technological Development of the Republic of Serbia, and the Institute of Physics (Belgrade). We thank Dr. L. Campbell for his help with some aspects of this paper.

Uncontrolled Keywords:2-line atomic fluorescence; Cross-sections; Scattering; Thermometry; Amplitudes; Helium; State
Subjects:Sciences > Physics > Nuclear physics
ID Code:62170
Deposited On:23 Sep 2020 09:27
Last Modified:23 Sep 2020 09:59

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