Venturi, V., and Whittingham, I.B. (2000) Close-coupled calculation of field-free collisions of cold metastable helium atoms. Physical Review A (Atomic, Molecular and Optical Physics), 61 (6). 60703. pp. 1-4.

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Abstract

A quantum-mechanical close-coupled calculation of field-free collisions of cold metastable helium atoms has been performed. Theoretical predictions of the rate coefficients for elastic processes and losses due to the Penning and associative ionization processes are reported for temperatures ranging from 1 μK to 1 K. The sensitivity of the rate constants to uncertainties in the molecular potentials and autoionization widths has been investigated. The total ionization loss rates were found to be sensitive to the short-range form of the 1Σg+ molecular potential and the autoionization widths, while the total elastic rate constants exhibit greater sensitivity to the short-range 5Σg+ molecular potential.

Item ID:	12991
Item Type:	Article (Research - C1)
ISSN:	1050-2947
Keywords:	atom trapping; molecular potentials; quantum scattering; ultracold atomic collisions
Date Deposited:	16 Jul 2013 04:39
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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