Parity-Resolved Rotationally Inelastic Collisions of Hexapole State-Selected NO (2.PI.1/2, J = 1/2-) with Ar

Steric effects and quantum interference in the inelastic scattering of NO(X) + Ar

“…Consistent with the preceding discussion, the dimensionless integral steric asymmetry, S , is defined as 18,19,24,25 where σ N and σ O are the oriented integral cross sections, which are obtained by integrating the oriented differential cross sections over all scattering angles. The steric asymmetry can be obtained from the experimental images by integrating the intensity of the ion images corresponding to the two orientations and then taking the normalized difference.…”

“…12 Hexapole state selection thus focusses only the f Λ-doublet level into the interaction region, and the NO molecules are then exposed to a static electric field used to orient the bond axis. In a pure Hund's case (a) basis, which is reasonable for low NO rotational states, the NO molecular wavefunction in a static electric field can be written as a linear combination of the field free e and f states, 18,19,24,25 …”

A joint theoretical–experimental investigation of the lower bound states of the NO(X 2Π)–Ar complex

“…Residual disagreement between recent scattering measurements 5,8,9 and theoretical simulations, 28,35 based on the same CCSD͑T͒ PES's, has continued to cast doubt on the accuracy of both the PES's and the subsequent quantum scattering calculations. The excellent agreement obtained here suggests that these PES's are indeed accurate, at least in the region probed by the bound-state measurements of Meyer and co-workers.…”

“…Experimental interest goes back nearly two decades 2,3 and continues unabated to this day. [4][5][6][7][8][9][10][11][12] Spectroscopic investigation of the bound states of the weakly bound complex between a molecular radical and a noble gas atom provides information on the shape of the potential energy surfaces ͑PES's͒ in the region of the van der Waals minimum, information which complements that available from inelastic scattering studies. 13 This has been exemplified by work over the past decade on the complexes of OH(X 2 ⌸) with Ar and Ne.…”

Two-photon spectroscopy of the low lying Rydberg states of NO. II. Application to the NO–Ar complex

“…30 More recently, additional information about the collision dynamics has become available in the form of parity resolved integral cross sections. 31 Even state resolved differential cross sections for the rotational excitation are now feasible experimental observables. 32,33 Theoretically, the NO-Ar system is considered a benchmark for the study of the collision dynamics of open shell systems.…”