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Collisions between molecules in the J = 0 state

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Abstract.

Collisions between electrostatically trapped molecules in the J = 0 state are theoretically investigated. Molecules in this state are advantageous for the evaporative cooling, because inelastic collision is impossible at ultra-low temperature. However, inelastic collision is more significant than elastic collision at high temperature, because the off-diagonal dipole matrix elements are much larger than the diagonal elements. The elastic and inelastic collision cross-sections are calculated under the condition that the collisional kinetic energy is larger than the energy gap between the rotational states. The dependencies of the collision cross-sections on the collisional kinetic energy and molecular constants are examined.

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Authors and Affiliations

  1. National Institute of Information and Communications Technology, 184-8795, Koganei, Tokyo, Japan

    M. Kajita

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  1. M. Kajita
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Correspondence to M. Kajita.

Additional information

Received: 29 July 2004, Published online: 21 September 2004

PACS:

31.15.Qg Molecular dynamics and other numerical methods - 33.80.Ps Optical cooling of molecules; trapping - 33.90. + h Other topics in molecular properties and interactions with photons

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Kajita, M. Collisions between molecules in the J = 0 state. Eur. Phys. J. D 31, 39–43 (2004). https://doi.org/10.1140/epjd/e2004-00120-5

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  • DOI: https://doi.org/10.1140/epjd/e2004-00120-5

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