Research Paper on Theoretical Interpretation of Energy Levels, Partition Function, and Classified Ultraviolet Lines in the Spectrum of Singly Charged Uranium (U II)

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Title: Theoretical Interpretation of Energy Levels, Partition Function, and Classified Ultraviolet Lines in the Spectrum of Singly Charged Uranium (U II)

Abstract: The lowest configurations of both parities have been interpreted using the Racah-Slater parametric method and Cowan codes in an effort to enhance U II analysis. With a root mean square (rms) deviation of 60 cm1, the 253 levels of the interacting configurations 5 f 37s2 + 5 f 36d7s + 5 f 36d2 + 5 f 47p + 5 f 5 in the odd parity, including the ground state, are interpreted by 24 free parameters and 64 constrained ones. In the even parity, 125 levels with an rms deviation of 84 cm1 can be deduced using the four known configurations 5 f 47s, 5 f 46d, 5 f 26d27s, 5 f 26d7s2, and the unidentified 5 f 26d3. The theoretical description of the higher configurations 5 f 37s7p + 5 f 36d7p is still inadequate due to perturbations. The partition function is established using the levels of U II that are currently known and anticipated. The high resolution ultraviolet spectrum of uranium recorded at the Meudon Observatory in the late 1980s, whose analysis was not completed, was re-examined as a result of the parametric study. A total of 451 lines of U II have been classified in the range 2344 – 2955 during the course of the current study. A new level of 5 f 36d7p (4 I)6K(J = 5.5) at 39113.98 0.1 cm1 has been established.

Keywords: uranium; actinide ions; emission spectrum; energy levels; energy parameters; partition function

Paper Quality: SCOPUS / Web of Science Level Research Paper

Subject: Physics

Subject Category: Atomic and Molecular Physics, and Optics

Writer Experience: 20+ Years

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