Two‐photon (vacuum ultraviolet + visible) spectroscopy of argon, krypton, xenon, and molecular hydrogen

1988 ◽  
Vol 89 (9) ◽  
pp. 5429-5441 ◽  
Author(s):  
M. P. McCann ◽  
C. H. Chen ◽  
M. G. Payne
Keyword(s):  
Molecular Hydrogen ◽  
Vacuum Ultraviolet ◽  
Visible Spectroscopy ◽  
Two Photon

Vacuum-ultraviolet stimulated emission from two-photon-excited molecular hydrogen

1983 ◽  
Vol 28 (2) ◽  
pp. 795-801 ◽  
Author(s):  
H. Pummer ◽  
H. Egger ◽  
T. S. Luk ◽  
T. Srinivasan ◽  
C. K. Rhodes
Keyword(s):  
Molecular Hydrogen ◽  
Vacuum Ultraviolet ◽  
Stimulated Emission ◽  
Two Photon

Doppler-free two-photon spectroscopy in the vacuum ultraviolet: helium 1 ^1S–2 ^1S transition

2000 ◽  
Vol 17 (9) ◽  
pp. 1599 ◽  
Author(s):  
S. D. Bergeson ◽  
K. G. H. Baldwin ◽  
T. B. Lucatorto ◽  
T. J. McIlrath ◽  
C. H. Cheng ◽  
...  
Keyword(s):  
Vacuum Ultraviolet ◽  
Two Photon

scholarly journals Photodissociation branching ratios of 13C16O and 12C18O in the vacuum ultraviolet region from 107 800 to 109 700 cm−1

2020 ◽  
Vol 637 ◽  
pp. A37 ◽  
Author(s):  
Xiaoping Chi ◽  
Pan Jiang ◽  
Qihe Zhu ◽  
Min Cheng ◽  
Hong Gao
Keyword(s):  
Vacuum Ultraviolet ◽  
Isotope Effects ◽  
Branching Ratio ◽  
Branching Ratios ◽  
Spectroscopic Studies ◽  
Ultraviolet Region ◽  
Velocity Map Imaging ◽  
Absorption Bands ◽  
Two Photon ◽  
O Isotope

In this study, we present C+ ion photofragment spectroscopic studies and photodissociation branching ratio measurements for two CO isotopologs, 13C16O and 12C18O, in the vacuum ultraviolet (VUV) region from 107 800 cm−1 (92.76 nm) to 109 700 cm−1 (91.16 nm) using a time-slice velocity-map imaging setup and a tunable VUV laser radiation source generated by the two-photon resonance-enhanced four-wave mixing technique. Several absorption bands of 12C16O in the above energy region are reinvestigated up to higher rotational levels compared with previous studies. The results are compared among 12C16O, 13C16O, and 12C18O on a state-by-state basis, and the photodissociation branching ratios for channels C(1D) + O(3P), and C(3P) + O(1D) are dramatically changed for most of the absorption bands due to the substitutions of 12C by 13C and 16O by 18O. The branching ratios of 13C16O and 12C18O are close to each other due to their similar reduced masses. The strong and selective isotope effects obtained here not only provide useful information for understanding the complicated predissociation dynamics of CO, but are also important for developing a comprehensive photochemical model for explaining the C and O isotope heterogeneities as observed in the Solar System.

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