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This article is cited in 4 scientific papers (total in 4 papers)
Physics of ultra cold atoms and their applications
Sum of oscillator-strength moments and asymptotic behaviour of thermally induced broadening and shift of energy levels of Rydberg atom circular states
I. L. Glukhov, A. A. Kamenski, V. D. Ovsyannikov Department of Physics, Voronezh State University, Voronezh
Abstract:
Based on the rules for summing oscillator-strength moments, we derive analytical expressions for environmentally (thermally) induced energy-level shifts and broadenings of circular Rydberg states with maximum orbital (l ) and magnetic (m) quantum numbers, l = |m| = n – 1. The formulae for the energy of interaction with blackbody radiation are presented in the form of series expansion in even powers of the small parameter η = Z2/(n3kBT ) ≪ 1 in the region of high temperatures T and principal quantum numbers n (Z is the charge of the residual ion). The expression for the thermally induced width contains a negative temperature-independent term coinciding in absolute value with the spontaneous width, so that the temperature-independent term is absent in the expression for the sum of the spontaneous and thermally induced widths. A similar expansion in powers of η for the thermally induced shift also contains a temperature-independent term proportional to 1/n6.
Keywords:
atom, circular Rydberg states, sums of oscillator strengths, thermal radiation, energy level width, shift.
Received: 11.03.2020
Citation:
I. L. Glukhov, A. A. Kamenski, V. D. Ovsyannikov, “Sum of oscillator-strength moments and asymptotic behaviour of thermally induced broadening and shift of energy levels of Rydberg atom circular states”, Kvantovaya Elektronika, 50:6 (2020), 581–589 [Quantum Electron., 50:6 (2020), 581–589]
Linking options:
https://www.mathnet.ru/eng/qe17265 https://www.mathnet.ru/eng/qe/v50/i6/p581
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