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Tayal, S. S.

doi:10.1103/physreva.47.182

Cited by 9 publications

(3 citation statements)

References 14 publications

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“…Figure c), because the photoionization cross sections of O ( 3 P) and Cl ( 2 P) are well known: σ(O ( 3 P)) = 3.3 Mb and σ(Cl ( 2 P)) = 30.5 Mb . Moreover, the latter value is in full agreement with theoretical work . The relative error limits of the experimental values are <9% and ∼20%, respectively. , …”

Section: Resultssupporting

confidence: 88%

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Photofragmentation of Nitryl Chloride in the Ultraviolet Regime and Vacuum Ultraviolet Regime

et al. 2001

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Photofragmentation of nitryl chloride (ClNO2) is reported in the ultraviolet (UV) (λ = 240 nm and λ = 308 nm) and in the vacuum ultraviolet (VUV) regime (55 nm ≤ λ ≤ 110 nm, corresponding to the photon energy range 11.3 eV ≤ E ≤ 22.5 eV), where pulsed radiation is used to excite the neutral molecule in the gas phase. The neutral photolysis products that are formed upon UV photolysis are subsequently probed by photoionization mass spectrometry by using time-correlated tunable laser-produced plasma VUV radiation. UV-pump/VUV-probe experiments allow us to identify two primary photolysis channels at λ = 308 nm: (i) Cl + NO2 and (ii) O + ClNO. Primary quantum yields for atomic product formation are deduced from photoionization experiments for both channels: γ308 nm(Cl) = 0.93 ± 0.10, and γ308 nm(O) = 0.07 ± 0.01. The yield of Cl formation (N(Cl)) is significantly reduced relative to that of O formation (N(O)) at λ = 240 nm, corresponding to a N(Cl)/N(O) ratio of 1.44 ± 0.15. The atomic oxygen is found to be formed in its 3P ground state at both photolysis wavelengths. The present results are compared to earlier work, and atmospheric implications of the present results are briefly discussed. The tunable VUV light source also allows us to perform photoionization mass spectrometry experiments on nitryl chloride without primary photolysis. These experiments yield the first ionization energy of ClNO2 as well as fragmentation thresholds of ClNO2 +.

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Section: Resultssupporting

confidence: 88%

“…34 Moreover, the latter value is in full agreement with theoretical work. 47 The relative error limits of the experimental values are <9% and ∼20%, respectively. 42,34 The experimental intensity ratio of the Cl + /O + signal is found to be I(Cl + )/I(O + ) ) 13.10 ( 1.79 (cf.…”

Section: Resultsmentioning

confidence: 95%

Photofragmentation of Nitryl Chloride in the Ultraviolet Regime and Vacuum Ultraviolet Regime

et al. 2001

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“…Theoretically, photoionization of atomic chlorine has been studied extensively over the last few decades using a variety of approximations that include R-matrix or K-matrix calculations performed by several groups [11][12][13][14]. Photoionization crosssection calculations for atomic chlorine were also performed using the configuration-interaction (CI) method [15], manybody-perturbation theory (MBPT) [16], open-shell transition matrix [17], and an effective single particle potential [18].…”

Section: Introductionmentioning

confidence: 99%

Valence-shell photoionization of the chlorinelike Ca3+ion

Alna’Washi

Habibi

et al. 2010

Phys. Rev. A

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Absolute photoionization measurements were performed for a mixture of 2 P o 3/2 ground-state and 2 P o 1/2 metastable-state Ca 3+ ions over the photon energy range 65.7-104.6 eV by merging an ion beam with a beam of monochromatized synchrotron radiation. The ionization threshold energy of the 2 P o 3/2 ground state was measured to be 67.063 ± 0.015 eV, which is 0.207 eV lower than the value tabulated in the NIST database. Most of the observed resonances associated with multiple Rydberg series of autoionizing states have been assigned spectroscopically using the quantum defect form of the Rydberg formula, guided by relativistic Hartree-Fock calculations of resonance energies and oscillator strengths. Intermediate coupling R-matrix calculations performed using the semi-relativistic Breit-Pauli approximation are in suitable agreement with measured absolute photoionization cross section in the energy range studied for this complex Cl-like ion species.

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Radiative Data for Chlorine and Its Ions

Berrington

Nakazaki

2002

Atomic Data and Nuclear Data Tables

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Autoionization resonances in the photoionization of the 3s23p5<

Cited by 9 publications

References 14 publications

Photofragmentation of Nitryl Chloride in the Ultraviolet Regime and Vacuum Ultraviolet Regime

Photofragmentation of Nitryl Chloride in the Ultraviolet Regime and Vacuum Ultraviolet Regime

Valence-shell photoionization of the chlorinelike Ca3+ion

Radiative Data for Chlorine and Its Ions

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