Showing papers by "Robin Côté published in 1997"
TL;DR: In this article, the triplet s-wave scattering length of {sup 6}Li was determined using two-photon photo-associative spectroscopy of the diatomic a{sup 3]Sigma{sub u}{sup +} state of [sup 6]Li{sub 2].
Abstract: The triplet s-wave scattering length of {sup 6}Li is determined using two-photon photoassociative spectroscopy of the diatomic a{sup 3}{Sigma}{sub u}{sup +} state of {sup 6}Li{sub 2}. The measured binding energy of the highest-lying bound state, combined with knowledge of the potential, determines the s-wave scattering length to be ({minus}2160{plus_minus}250)a{sub 0}, where a{sub 0} is the Bohr radius. This extraordinarily large scattering length signifies a near-threshold resonance. A complete table of singlet and triplet scattering lengths for collisions involving {sup 6}Li and {sup 7}Li determined from this and our previous spectroscopic investigations is given. {copyright} {ital 1997} {ital The American Physical Society}
114 citations
TL;DR: In this article, the authors analyzed forbidden reflection by a potential step by matching WKB waves to solutions of a Schrodinger equation involving the tail of the potential on the up side of the step.
Abstract: Classically forbidden reflection by a potential step is analyzed by matching WKB waves to solutions of a Schr\"odinger equation involving the tail of the potential on the up side of the step. Analytic expressions for the leading deviation of the reflection probability from unity and the phase of the reflection amplitude at the top of the step are derived for potentials decaying as an inverse power of the coordinate $V(x)\ensuremath{\propto}\ensuremath{-}{1/x}^{\ensuremath{\alpha}}, \ensuremath{\alpha}g2$.
53 citations
TL;DR: In this paper, translationally cold molecules can be created in specific rotational and vibrational levels and it is suggested they can be employed to test Wigner's threshold laws for inelastic collisions.
51 citations
01 Apr 1997
1 citations