Rotational-Level Dependence of OH A2Σ+Quenching at 242 and 196 K

Brooke L. Hemming; David R. Crosley

doi:10.1021/jp021132c

Rotational level dependent quenching of the A 3Πi, v’=0 state of NH

The Journal of Chemical Physics ◽

10.1063/1.455815 ◽

1989 ◽

Vol 90 (7) ◽

pp. 3566-3573 ◽

Cited By ~ 39

Author(s):

Nancy L. Garland ◽

David R. Crosley

Keyword(s):

Rotational Level

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Spectra, line intensities of the C 1Σ g + ⇒ A 1Σ u + and c 3Σ g + ⇒ a 3Σ u + transitions in liquid normal He, and rotational level populations of the C 1Σ g + and c 3Σ g + the terms

High Temperature ◽

10.1134/s0018151x17010023 ◽

2017 ◽

Vol 55 (2) ◽

pp. 165-173 ◽

Cited By ~ 1

Author(s):

V. M. Atrazhev ◽

V. A. Shakhatov ◽

R. E. Boltnev ◽

N. Bonifaci ◽

F. Aitken ◽

...

Keyword(s):

Rotational Level ◽

Line Intensities

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Rotational-level dependence of the fluorescence yield of pyrazine: Computer simulation of the quantum yield spectrum

Chemical Physics Letters ◽

10.1016/0009-2614(84)85323-3 ◽

1984 ◽

Vol 106 (5) ◽

pp. 387-390 ◽

Cited By ~ 10

Author(s):

Osamu Sekiguchi ◽

Nobuhiro Ohta ◽

Hiroaki Baba

Keyword(s):

Computer Simulation ◽

Quantum Yield ◽

Rotational Level ◽

Fluorescence Yield

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Gas-phase electron paramagnetic resonance spectrum and dipole moment of NF( 1 ∆)

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1973.0030 ◽

1973 ◽

Vol 332 (1590) ◽

pp. 355-363 ◽

Cited By ~ 23

Keyword(s):

Dipole Moment ◽

Gas Phase ◽

Resonance Spectrum ◽

Rotational Level ◽

Quadrupole Coupling Constant ◽

Rotational Constant ◽

Coupling Constants ◽

Paramagnetic Resonance ◽

Quadrupole Coupling ◽

Electron Paramagnetic

The gas-phase paramagnetic resonance spectrum of NF in the J = 2 rotational level of the 1 ∆ state has been studied, and the dipole moment in this state is found to be 0.37 ± 0.60D. The rotational constant previously determined from the electronic spectrum is shown to be consistent with the electron resonance results, and the 14 N quadrupole coupling constant e 2 qQ is 4.1 ± 0.2 MHz. The hyperfine coupling constants of the 14 N and 19 F nuclei are + 109.92 ± 0.14 and +758.06 ± 0.23 MHz respectively.

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Rotational level dependence in the collisional removal of CH/D(A2Δ)

Journal of Photochemistry and Photobiology A Chemistry ◽

10.1016/s1010-6030(00)00259-8 ◽

2000 ◽

Vol 134 (1-2) ◽

pp. 127-132 ◽

Cited By ~ 3

Author(s):

Carolina Cerezo ◽

Margarita Martı́n

Keyword(s):

Rotational Level

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Inelastic rate coefficients for collisions of C4H− with H2

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/stab2563 ◽

2021 ◽

Author(s):

Christian Balança ◽

Ernesto Quintas-Sánchez ◽

Richard Dawes ◽

Fabien Dumouchel ◽

François Lique ◽

...

Keyword(s):

Cross Sections ◽

Rotational Level ◽

Carbon Chain ◽

Rate Coefficients ◽

Thermodynamical Equilibrium ◽

Close Coupling ◽

State Approximation ◽

Explicitly Correlated ◽

State Rate ◽

Chemical Conditions

Abstract Carbon-chain anions were recently detected in the interstellar medium. These very reactive species are used as tracers of the physical and chemical conditions in a variety of astrophysical environments. However, the Local Thermodynamical Equilibrium conditions are generally not fulfilled in these environments. Therefore, collisional as well as radiative rates are needed to accurately model the observed emission lines. We determine in this work the state-to-state rate coefficients of C4H− in collision with both ortho- and para-H2. A new ab initio 4D potential energy surface was computed using explicitly-correlated coupled cluster procedures. This surface was then employed to determine rotational excitation and de-excitation cross sections and rate coefficients for the first 21 rotational levels (up to rotational level j1 = 20) using the close-coupling method, while the coupled-state approximation was used to extend the calculations up to j1 = 30. State-to-state rate coefficients were obtained for the temperature range 2–100 K. The differences between the ortho- and para-H2 rate coefficients are found to be small.

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