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Atoms 2018, 6(3), 51; https://doi.org/10.3390/atoms6030051

Expectation Values of the Neutral Chromium Radius

1
Department of Physics and Astronomy, College of Sciences, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
2
Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
3
Groupe de Recherche en Physique Atomique et Astrophysique (GRePAA), INSAT, Centre Urbain Nord, BP 676, University of Carthage, 1080 Tunis Cedex, Tunisia
*
Author to whom correspondence should be addressed.
Received: 18 July 2018 / Revised: 28 August 2018 / Accepted: 5 September 2018 / Published: 12 September 2018
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Abstract

Neutral Chromium (Cr I) is an important element in many laboratory plasma applications. In this work, expectation values of the radius for Cr I are calculated. These atomic data are calculated with three different atomic codes: Cowan code using the Hartree–Fock Relativistic approximation, SUPERSTRUCTURE and AUTOSTRUCTURE codes using scaled Thomas–Fermi–Dirac–Amaldi potential. Relativistic corrections are introduced according to the Breit–Pauli approach. The 3 d 5 4 s , 3 d 4 4 s 2 , 3 d 5 4 d , 3 d 5 4 p and 3 d 4 4 s 4 p configurations are included to obtain the expectation values of radius of Cr I and compared with available data. The novelty of our work is to obtain new values of < 1 r > , < r > , and < r 2 > for the configuration of 4 p and 4 d and the values of < r 3 > for all orbitals configurations considered in this work. View Full-Text
Keywords: neutral chromium; radius expectation; powers of the orbitals radius; Hartree–Fock Relativistic approximation; Thomas–Fermi–Dirac–Amaldi potential neutral chromium; radius expectation; powers of the orbitals radius; Hartree–Fock Relativistic approximation; Thomas–Fermi–Dirac–Amaldi potential
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Abdul Rahim Yaqub, N.; Qindeel, R.; Alonizan, N.; Ben Nessib, N. Expectation Values of the Neutral Chromium Radius. Atoms 2018, 6, 51.

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