Laser-reduced fluorescence spectroscopy on predissociated CO triplet states

A. Mellinger; C. R. Vidal

doi:10.1063/1.468184

Laser-reduced fluorescence spectroscopy on predissociated CO triplet states

A. Mellinger, C. R. Vidal

Physics

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26 Scopus citations

Abstract

Triplet states of the CO molecule in the region between 86 000 and 94 000 cm^-1 have been investigated in a 1 + 1 double-resonance experiment using a detection scheme based on laser-reduced fluorescence (LRF). The strongly predissociated (3pσ) j ³Σ⁺ Rydberg state at 90 833 cm^-1 with an average lifetime of 4.6 ps has been observed spectroscopically at high resolution for the first time, providing a clear identification of this state. Both the accidental predissociation of the J _f=6 level of CO (E ¹Π, v = 0) and the value of the lambda-doubling constant q of the c ³Π state can be attributed to j ³Σ⁺. In addition, a valence state around 91 960 cm^-1 has been identified as ³Π. Accurate molecular constants have been determined for both states.

Original language	English
Pages (from-to)	104-110
Number of pages	7
Journal	Journal of Chemical Physics
Volume	101
Issue number	1
DOIs	https://doi.org/10.1063/1.468184
State	Published - 1994

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title = "Laser-reduced fluorescence spectroscopy on predissociated CO triplet states",

abstract = "Triplet states of the CO molecule in the region between 86 000 and 94 000 cm-1 have been investigated in a 1 + 1 double-resonance experiment using a detection scheme based on laser-reduced fluorescence (LRF). The strongly predissociated (3pσ) j 3Σ+ Rydberg state at 90 833 cm-1 with an average lifetime of 4.6 ps has been observed spectroscopically at high resolution for the first time, providing a clear identification of this state. Both the accidental predissociation of the J f=6 level of CO (E 1Π, v = 0) and the value of the lambda-doubling constant q of the c 3Π state can be attributed to j 3Σ+. In addition, a valence state around 91 960 cm-1 has been identified as 3Π. Accurate molecular constants have been determined for both states.",

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year = "1994",

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AU - Mellinger, A.

AU - Vidal, C. R.

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N2 - Triplet states of the CO molecule in the region between 86 000 and 94 000 cm-1 have been investigated in a 1 + 1 double-resonance experiment using a detection scheme based on laser-reduced fluorescence (LRF). The strongly predissociated (3pσ) j 3Σ+ Rydberg state at 90 833 cm-1 with an average lifetime of 4.6 ps has been observed spectroscopically at high resolution for the first time, providing a clear identification of this state. Both the accidental predissociation of the J f=6 level of CO (E 1Π, v = 0) and the value of the lambda-doubling constant q of the c 3Π state can be attributed to j 3Σ+. In addition, a valence state around 91 960 cm-1 has been identified as 3Π. Accurate molecular constants have been determined for both states.

AB - Triplet states of the CO molecule in the region between 86 000 and 94 000 cm-1 have been investigated in a 1 + 1 double-resonance experiment using a detection scheme based on laser-reduced fluorescence (LRF). The strongly predissociated (3pσ) j 3Σ+ Rydberg state at 90 833 cm-1 with an average lifetime of 4.6 ps has been observed spectroscopically at high resolution for the first time, providing a clear identification of this state. Both the accidental predissociation of the J f=6 level of CO (E 1Π, v = 0) and the value of the lambda-doubling constant q of the c 3Π state can be attributed to j 3Σ+. In addition, a valence state around 91 960 cm-1 has been identified as 3Π. Accurate molecular constants have been determined for both states.

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Laser-reduced fluorescence spectroscopy on predissociated CO triplet states

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