Erratum: “Orientation and alignment depolarization in OH(X 2Π)+Ar/He collisions” [J. Chem. Phys. 129, 074304 (2008)]

Elastic depolarization and polarization transfer in CN(A2Π,v= 4)+Ar collisions

“…For OH(X)-Ar, the V diff PES has a significant magnitude beyond the range of the repulsive wall in the V sum potential, and spin-orbit manifold changing collisions are a significant fraction of the total RET cross-section. 19 In contrast, for NO(X)-Ar, the V diff PES acts at shorter range than the V sum PES. 79 As a result of this, collisions that change spin-orbit manifold have considerably smaller cross-sections than spin-orbit conserving ones for NO(X)-Ar.…”

“…38 Clearly then, comparable V sum PESs and kinematics are not enough in 35 The NO(A)-Ar PES has a well depth of ≈ 100 cm -1 with the minimum in a linear geometry. 80 Although their experiments were unable to resolve pure elastic depolarization, closed-shell quantum scattering calculations give Considering other similarities that might be determining factors in elastic depolarization, the kinematically distinct system, OH(X 2 Π) + Ar has been studied recently both experimentally by our own group, [15][16][17][18][19] and by quantum scattering calculations. 36,38 Again, the V sum potential is of similar well-depth, but this time the minima are at linear geometries.…”

“…[27][28][29][30][31] We have exploited Polarization Spectroscopy, a 3 rd -order non-linear spectroscopic method, 16,32 to measure rate constants for elastic depolarization of both orientation and alignment of OH(X 2 Π or A 2 Σ + ) in collisions with rare gases and simple molecular colliders. 17,[19][20][21][22][23]33 Comparison with full quantum scattering calculations on accurate ab-initio PESs has helped to unravel the influence of different parts of the PES on RET and elastic depolarization. Brouard and co-workers have used an independent technique, Zeeman quantum beat spectroscopy, to study elastic and inelastic depolarization in the OH(A)-Ar system, [23][24][25]34 and most recently NO(A 2 Σ + )-Ar/He.…”

“…Experiments have used various techniques under both controlled collision conditions [15][16][17][18][19][20][21][22][23][24][25][26] and in atmospheric pressure flames. [27][28][29][30][31] We have exploited Polarization Spectroscopy, a 3 rd -order non-linear spectroscopic method, 16,32 to measure rate constants for elastic depolarization of both orientation and alignment of OH(X 2 Π or A 2 Σ + ) in collisions with rare gases and simple molecular colliders.…”

State-to-state inelastic scattering of Stark-decelerated OH radicals with Ar atoms

“…32 Under thermal bulk conditions, the evolution of oriented or aligned OH (X 2 P) radicals was studied in collisions with argon by polarization spectroscopy. 33,34 Detailed information on the OH(X 2 P)-Ar PES has also been obtained from spectroscopic study of the bound states of the OH-Ar van der Waals complex. 35,36 Here we report the investigation of rotational energy transfer of fully state-selected OH (X 2 P 3/2 , J = 3/2, f) radicals in collisions with Ar atoms at collision energies between 80 and 800 cm…”