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On the formation of van der Waals molecules in a buffer gas cell

Marjan Mirahmadi, Jesús Pérez‐Ríos

Bulletin of the American Physical SocietyMar 17, 20210 citations

Van der Waals molecules of a zinc or cadmium atom interacting with an alkali-metal or alkaline-earth metal atom

Klaudia Zaremba-Kopczyk, Michał Tomza

Bulletin of the American Physical SocietyJun 3, 20210 citations

Formation and breakup rates of RbXe van der Waals molecules in He and N2 gas

Norman F. Ramsey, E. Miron, Xianghua Zeng +1 more

Chemical Physics LettersNov 1, 198316 citations

Spin depolarization and spin exchange in cold collisions involving3He: role of anisotropy

H. R. Sadeghpour

Mechanisms of spin depolarization, spin relaxation and spin exchange in cold atom-atom, atom-molecule collisions are discussed. The formation of weakly-bound van der Waals molecules in buffer-gas cooled magnetic traps, intermediated by anisotropic hyperfine interaction is considered.

Journal of Modern OpticsAug 18, 20100 citations

On the formation of van der Waals complexes through three-body recombination

Mirahmadi, M., Pérez-Ríos, J.

In this work, we show that van der Waals molecules X–RG (where RG is the rare gas atom) may be created through direct three-body recombination collisions, i.e., X + RG + RG → X–RG + RG. In particular, the three-body recombination rate at temperatures relevant for buffer gas cell experiments is calculated via a classical trajectory method in hyperspherical coordinates [Pérez-Ríos et al., J. Chem. Phys. 140, 044307 (2014)]. As a result, it is found that the formation of van der Waals molecules in buffer gas cells (1 K ≲ T ≲ 10 K) is dominated by the long-range tail (distances larger than the LeRoy radius) of the X–RG interaction. For higher temperatures, the short-range region of the potential becomes more significant. Moreover, we notice that the rate of formation of van der Walls molecules is of the same order of the magnitude independent of the chemical properties of X. As a consequence, almost any X–RG molecule may be created and observed in a buffer gas cell under proper conditions.In this work, we show that van der Waals molecules X–RG (where RG is the rare gas atom) may be created through direct three-body recombination collisions, i.e., X + RG + RG → X–RG + RG. In particular, the three-body recombination rate at temperatures relevant for buffer gas cell experiments is calculated via a classical trajectory method in hyperspherical coordinates [Pérez-Ríos et al., J. Chem. Phys. 140, 044307 (2014)]. As a result, it is found that the formation of van der Waals molecules in buffer gas cells (1 K ≲ T ≲ 10 K) is dominated by the long-range tail (distances larger than the LeRoy radius) of the X–RG interaction. For higher temperatures, the short-range region of the potential becomes more significant. Moreover, we notice that the rate of formation of van der Walls molecules is of the same order of the magnitude independent of the chemical properties of X. As a consequence, almost any X–RG molecule may be created and observed in a buffer gas cell under proper conditions.

Jan 21, 202117 citations

Impact relaxation of polarization of the ground state of alkali metal atoms in inert gases

V. V. Batygin, B. M. Gurevich

Optics and SpectroscopyApr 1, 19810 citations

Ground-state depolarization of an alkali atom in an inert buffer gas due to the formation of van der Waals molecules

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Ground-state depolarization of an alkali atom in an inert buffer gas due to the formation of van der Waals molecules

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