TY - JOUR

T1 - OPTICAL TRANSITIONS IN EXCITED ALKALI + RARE-GAS COLLISION MOLECULES AND RELATED INTERATOMIC POTENTIALS: #

AU - Behmenburg, W.

AU - Makonnen, A.

AU - Kaiser, A.

AU - Rebentrost, F.

AU - Staemmler, V.

AU - Jungen, M.

AU - Peach, G.

AU - Devdariani, A.

AU - Tserkovnyi, S.

AU - Zagrebin, A.

AU - Czuchaj, E.

PY - 1996

Y1 - 1996

N2 - A comparison is made of experimental far-wing profiles for the system # with quantum calculations of thermally averaged free - free continua. Using input adiabatic potentials and transition moment functions from both ab initio and semi-empirical approaches, the comparison shows: (i) new ab initio potentials for # reproduce the spectral positions of the observed rainbow satellites well; the height of the # barrier predicted agrees with experiment to within #, whereas its position is too large by #; (ii) potentials obtained with various semi-empirical methods reproduce the satellite structure qualitatively, but are generally too repulsive in the # state at intermediate and large internuclear separations; (iii) transition moment functions for the asymptotically forbidden # transitions reproduce, with different degrees of accuracy, the intensity of the red-wing satellite related to the # potential extremum around #. The vibrational energies in the # and # states calculated with the ab initio

AB - A comparison is made of experimental far-wing profiles for the system # with quantum calculations of thermally averaged free - free continua. Using input adiabatic potentials and transition moment functions from both ab initio and semi-empirical approaches, the comparison shows: (i) new ab initio potentials for # reproduce the spectral positions of the observed rainbow satellites well; the height of the # barrier predicted agrees with experiment to within #, whereas its position is too large by #; (ii) potentials obtained with various semi-empirical methods reproduce the satellite structure qualitatively, but are generally too repulsive in the # state at intermediate and large internuclear separations; (iii) transition moment functions for the asymptotically forbidden # transitions reproduce, with different degrees of accuracy, the intensity of the red-wing satellite related to the # potential extremum around #. The vibrational energies in the # and # states calculated with the ab initio

M3 - Article

SP - 3891

EP - 3910

JO - Journal of the European Optical Society Part B: Quantum Optics

JF - Journal of the European Optical Society Part B: Quantum Optics

SN - 0953-4075

IS - 17

ER -