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 (Research - C1) |
| ISSN: | 1742-6596 |
| Keywords: | ultracold atomic collisions; photoassociation; metastable helium |
| 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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