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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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 Type:||Article (Refereed Research - C1)|
|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%|
|Citation Count from Scopus||