Mechanism of Collisional Spin Relaxation in Triplet-Sigma Molecules

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dc.creatorCampbell, Wesley C.
dc.creatorTscherbul, Timur V.
dc.creatorLu, Hsin-I
dc.creatorTsikata, Edem
dc.creatorKrems, Roman V.
dc.creatorDoyle, John M.
dc.date2008-04-01
dc.date2008-12-04
dc.date.accessioned2026-07-07T12:28:34Z
dc.date.available2026-07-07T12:28:34Z
dc.descriptionWe measure and theoretically determine the effect of molecular rotational splitting on Zeeman relaxation rates in collisions of cold Triplet-Sigma molecules with helium atoms in a magnetic field. All four stable isotopomers of the imidogen (NH) molecule are magnetically trapped and studied in collisions with 3He and 4He. The 4He data support the predicted inverse square dependence of the collision induced Zeeman relaxation rate coefficient on the molecular rotational constant B. The measured 3He rate coefficients are much larger than 4He and depend less strongly on B, and the theoretical analysis indicates they are strongly affected by a shape resonance. The results demonstrate the influence of molecular structure on collisional energy transfer at low temperatures.
dc.description10 pages, 3 figures, revised introduction and focus
dc.identifierhttps://arxiv.org/abs/0804.0265
dc.identifierhttp://arxiv.org/abs/0804.0265
dc.identifierPhys. Rev. Lett. 102, 013003 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.013003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215581
dc.subjectAtomic Physics
dc.titleMechanism of Collisional Spin Relaxation in Triplet-Sigma Molecules
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