Multiphoton ionization of nitric oxide-rare gas van der Waals species

We report an investigation of the dissociation of Ã state NO-Ar at energies from 23 cm −1 below the dissociation energy to 200 cm −1 above. The NO product rotational distributions show population in states that are not accessible with the energy available for excitation from the NO ground state. This effect is observed at photon energies from below the dissociation energy up to approximately 100 cm −1 above it. Translational energy distributions, extracted from velocity map images of individual rotational levels of the NO product, reveal contributions from excitation of high energy NO-Ar X states at all the excess energies probed, although this diminishes with increasing photon energy and is quite small at 200 cm −1 , the highest energy studied. These translational energy distributions show that there are contributions arising from population in vibrational levels up to the X state dissociation energy. We propose that the reason such sparsely populated levels contribute to the observed dissociation is a considerable increase in the transition moment, via the FranckCondon factor associated with these highly excited states, which arises because of the quite different geometries in the NO-Ar X and Ã states. This effect is likely to arise in other systems with similarly large geometry changes.

Section: E Spectral Observation Of High-lying No-ar X Statesmentioning

confidence: 53%

Section: E Spectral Observation Of High-lying No-ar X Statesmentioning

confidence: 99%

The dissociation of NO–Ar(Ã) from around threshold to 200 cm−1 above threshold

Holmes-Ross

Lawrance

2010

“…While several excited electronic states of NO-Ne have been extensively studied through multiphoton excitation, [16][17][18] theÃ←X band origin has not been observed despite several attempts. 7,[17][18][19][20][21] zero point vibrational level inX to bound levels inÃ.…”

Section: Introductionmentioning

confidence: 99%

“…7,[17][18][19][20][21] zero point vibrational level inX to bound levels inÃ. 21 These results explain the difficulty of obtaining spectra attributable to theÃ-X transition of the complex.…”

Section: Introductionmentioning

confidence: 99%

The binding energies of NO–Rg (Rg = He, Ne, Ar) determined by velocity map imaging

Holmes-Ross

Lawrance

2011

We report velocity map imaging measurements of the binding energies, D 0 , of NO-Rg (Rg = He, Ne, Ar) complexes. TheX state binding energies determined are 3.0 ± 1.8, 28.6 ± 1.7, and 93.5 ± 0.9 cm −1 for NO-He, -Ne, and -Ar, respectively. These values compare reasonably well with ab initio calculations. Because theÃ-X transitions were unable to be observed for NO-He and NO-Ne, values for the binding energies in theÃ state of these complexes have not been determined. Based on our X state value and the reportedÃ-X origin band position, theÃ state binding energy for NO-Ar was determined to be 50.6 ± 0.9 cm −1 .

“…TheC 2 Π (v NO = 0) state spectra of NO-Ne and NO-Kr have been reported by Miller and Cheng, 17 using resonanceenhanced multiphoton ionization (REMPI) spectroscopy. In addition, Miller 18 published an improved spectrum for NOKr (v NO = 0) and also a corresponding one for NO-Xe.…”

Section: Introductionmentioning

confidence: 94%

Interaction of the NO 3pπ (C 2Π) Rydberg state with RG (RG = Ne, Kr, and Xe): Potential energy surfaces and spectroscopy

Ershova

Kłos

Besley

et al. 2015

A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. We present new potential energy surfaces for the interaction of NO(C 2 Π) with each of Ne, Kr, and Xe. The potential energy surfaces have been calculated using second order Møller-Plesset perturbation theory, exploiting a procedure to converge the reference Hartree-Fock wavefunction for the excited states: the maximum overlap method. The bound rovibrational states obtained from the surfaces are used to simulate the electronic spectra and their appearance is in good agreement with available (2+1) REMPI spectra. We discuss the assignment and appearance of these spectra, comparing to that of NO-Ar. C 2015 AIP Publishing LLC. [http://dx