Theoretical studies of photoassociation in ultracold metastable helium

Cocks, D.G., and Whittingham, I.B. (2009) Theoretical studies of photoassociation in ultracold metastable helium. Journal of Physics: conference series, 185 (1). - .

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Abstract

Line shifts and line shapes for photoassociation of spin-polarised metastable helium to long-range vibrational states in the J = 1,0+u potential dissociating to the 2s3S1 + 2p 3P0 limit are studied using a nonperturbative multichannel calculation valid for arbitrary laser intensities. Asymptotically-free dressed states of the laser plus matter system are used to obtain the S-matrix elements required to generate the photoassociation profiles. Issues associated with the very shallow nature of the potentials that support the excited states are investigated.

Item ID: 9303
Item Type: Article (Refereed Research - C1)
Keywords: ultracold atomic collisions; photoassociation; metastable helium
ISSN: 1742-6596
Date Deposited: 25 May 2010 23:33
FoR Codes: 02 PHYSICAL SCIENCES > 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics > 020201 Atomic and Molecular Physics @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100%
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