Transport properties of two-component radium – halogen dilute gas media

Authors

  • Darya N. Meniailava Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Maksim B. Shundalau Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus; Joint Institute of the Dalian University of Technology and Belarusian State University, Dalian 116024, China
  • Yong-Chang Han Joint Institute of the Dalian University of Technology and Belarusian State University, Dalian 116024, China; Dalian University of Technology, Dalian 116024, China

Keywords:

transport properties, collision integrals, radium monohalides, laser cooling
Supporting Agencies
This work was supported by the Belarusian state scientific research program «Convergence-2025» and the International Cooperation Fund Project of Dalian University of Technology and Belarusian State University (No. ICR2105). The authors are also grateful to Yuliya Osika (Belarusian State University) for technical assistance.

Abstract

Based on state-of-the-art ab initio potential energy functions and classical kinetic theory, some transport properties (diffusion, viscosity and thermal conductivity coefficients) of two-component dilute gas media of radium and halogen (F, Cl, Br, I) atoms were predicted as functions of the translation temperature up to 3000 K. Calculations were performed by sequential analytical and (or) numerical computations of deflection angle, cross-section and collision integrals. A detailed methodology for the calculation of the transport properties using the Morse potential was developed. Some numerical difficulties arising due to the singularity of the integrands and discontinuous character of the variable of integration are considered. The dependence of transport properties on isotope mass is also shown. Possible errors introduced by using the model Morse potential function instead of the real potential for the interaction between atoms are estimated. These data can be useful for the planning of the experiments on the direct laser cooling of the monohalides of alkaline earth metals.

Author Biographies

  • Darya N. Meniailava, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

    senior lecturer at the department of high mathematics and mathematical physics, faculty of physics

  • Maksim B. Shundalau, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus; Joint Institute of the Dalian University of Technology and Belarusian State University, Dalian 116024, China

    PhD (physics and mathematics), docent; associate professor at the department of physical optics and applied informatics, faculty of physics, Belarusian State University, and associate professor, Joint Institute of the Dalian University of Technology and Belarusian State University

  • Yong-Chang Han, Joint Institute of the Dalian University of Technology and Belarusian State University, Dalian 116024, China; Dalian University of Technology, Dalian 116024, China

    doctor of science (physics and mathematics); professor, Joint Institute of the Dalian University of Technology and Belarusian State University, and professor at the department of physics, Dalian University of Technology

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Published

2022-02-08

Issue

No. 1 (2022): Journal of the Belarusian State University. Physics

Section

Theoretical Physics

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How to Cite

(1)
Meniailava, D. N. .; Shundalau, M. B.; Han, Y.-C. Transport Properties of Two-Component Radium – Halogen Dilute Gas Media. Журнал Белорусского государственного университета. Физика 2022, No. 1, 52-64. https://doi.org/10.33581/2520-2243-2022-1-52-64.
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