Two-channel model of photoassociation in the vicinity of a Feshbach resonance

Journal Article · Tue Dec 15 00:00:00 EST 2009 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.80.061401· OSTI ID:21352280

Schneider, Philipp-Immanuel; Saenz, Alejandro ^[1]

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1. AG Moderne Optik, Institut fuer Physik, Humboldt-Universitaet zu Berlin, Hausvogteiplatz 5-7, 10117 Berlin (Germany)

We derive the two-channel (TC) description of the photoassociation (PA) process in the presence of a magnetic Feshbach resonance and compare to full coupled multichannel calculations for the scattering of {sup 6}Li-{sup 87}Rb. Starting from a similar approach as that of Pellegrini et al. [Phys. Rev. Lett. 101, 053201 (2008)] we arrive at a simpler expression which fully describes the PA process by two parameters: the maximal transition rate and the point of vanishing transition rate. The TC approximation reproduces excellently the PA transition rates of the full multichannel calculation and reveals, e.g., that the enhancement of the rate at a resonance is directly connected to the position of vanishing rate. For the description of two independent resonances it was found that only three parameters completely characterize the PA process.

• OSTI ID: 21352280
• Journal Information: Physical Review. A, Vol. 80, Issue 6; Other Information: DOI: 10.1103/PhysRevA.80.061401; (c) 2009 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

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74 ATOMIC AND MOLECULAR PHYSICS
APPROXIMATIONS
ATOM-ATOM COLLISIONS
COMPARATIVE EVALUATIONS
LITHIUM
LITHIUM 6
MESONS
PHOTOCHEMISTRY
RESONANCE
RUBIDIUM
RUBIDIUM 87
SCATTERING
ALKALI METALS
ATOM COLLISIONS
BETA DECAY RADIOISOTOPES
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CALCULATION METHODS
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ELEMENTARY PARTICLES
ELEMENTS
EVALUATION
HADRONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIGHT NUCLEI
LITHIUM ISOTOPES
METALS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
RUBIDIUM ISOTOPES
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES