dorsal/arxiv
View SchemaAnalysis of Photoassociation Spectra for Giant Helium Dimers
| Authors | J. Leonard, A. P. Mosk, M. Walhout, P. Van Der Straten, M. Leduc, C. Cohen-Tannoudji |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0310006 |
| URL | https://arxiv.org/abs/quant-ph/0310006 |
| DOI | 10.1103/PhysRevA.69.032702 |
| Journal | Physical Review A 69 (2004) 032702 |
Abstract
We perform a theoretical analysis to interpret the spectra of purely long-range helium dimers produced by photoassociation (PA) in an ultra-cold gas of metastable helium atoms. The experimental spectrum obtained with the PA laser tuned closed to the $2^3S_1\leftrightarrow 2^3P_0$ atomic line has been reported in a previous Letter. Here, we first focus on the corrections to be applied to the measured resonance frequencies in order to infer the molecular binding energies. We then present a calculation of the vibrational spectra for the purely long-range molecular states, using adiabatic potentials obtained from perturbation theory. With retardation effects taken into account, the agreement between experimental and theoretical determinations of the spectrum for the $0_u^+$ purely long-range potential well is very good. The results yield a determination of the lifetime of the $2^3P$ atomic state.
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"abstract": "We perform a theoretical analysis to interpret the spectra of purely\nlong-range helium dimers produced by photoassociation (PA) in an ultra-cold gas\nof metastable helium atoms. The experimental spectrum obtained with the PA\nlaser tuned closed to the $2^3S_1\\leftrightarrow 2^3P_0$ atomic line has been\nreported in a previous Letter. Here, we first focus on the corrections to be\napplied to the measured resonance frequencies in order to infer the molecular\nbinding energies. We then present a calculation of the vibrational spectra for\nthe purely long-range molecular states, using adiabatic potentials obtained\nfrom perturbation theory. With retardation effects taken into account, the\nagreement between experimental and theoretical determinations of the spectrum\nfor the $0_u^+$ purely long-range potential well is very good. The results\nyield a determination of the lifetime of the $2^3P$ atomic state.",
"arxiv_id": "quant-ph/0310006",
"authors": [
"J. Leonard",
"A. P. Mosk",
"M. Walhout",
"P. Van Der Straten",
"M. Leduc",
"C. Cohen-Tannoudji"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.69.032702",
"journal_ref": "Physical Review A 69 (2004) 032702",
"title": "Analysis of Photoassociation Spectra for Giant Helium Dimers",
"url": "https://arxiv.org/abs/quant-ph/0310006"
},
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