Cold and ultracold NH-NH collisions in magnetic fields

L.M.C. Janssen, P.S. Zuchowski, A. van der Avoird, G.C. Groenenboom, J.M. Hutson

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

35 Citaten (Scopus)


Elastic and spin-changing inelastic collision cross sections are presented for cold and ultracold magnetically trapped NH. The cross sections are obtained from coupled-channel scattering calculations as a function of energy and magnetic field. We specifically investigate the influence of the intramolecular spin-spin, spin-rotation, and intermolecular magnetic dipole coupling on the collision dynamics. It is shown that N15H is a very suitable candidate for evaporative cooling experiments. The dominant trap-loss mechanism in the ultracold regime originates from the intermolecular dipolar coupling term. At higher energies and fields, intramolecular spin-spin coupling becomes increasingly important. Our qualitative results and conclusions are fairly independent of the exact form of the potential and of the size of the channel basis set.

Originele taal-2Engels
TijdschriftPhysical Review A - Atomic, Molecular, and Optical Physics
Nummer van het tijdschrift2
StatusGepubliceerd - 28 feb 2011
Extern gepubliceerdJa


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