Molecular constants and term values for the hydroxyl radical, OH: The X2Π (v = 8, 12), A2Σ+ (v = 4–9), B2Σ+ (v = 0, 1), and C2Σ+ (v = 0, 1) states

Coxon, John A.; Sappey, Andrew D.; Copeland, Richard A.

doi:10.1016/0022-2852(91)90349-f

Cited by 32 publications

(21 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As shown in Table II, the rotational constants ͑B 4 , D 4 , and ␥ 4 ͒ obtained for v = 4 are in good agreement with values from a merged fit by Coxon et al,32 which included data from two prior experimental studies of OH A 2 ⌺ + ͑v =4͒: LIF excitation spectroscopy on the A 2 ⌺ + ← X 2 ⌸ ͑4,2͒ transition 13 and dispersed fluorescence spectroscopy on the B 2 ⌺ + → A 2 ⌺ + ͑1,4͒ transition. As shown in Table II, the rotational constants ͑B 4 , D 4 , and ␥ 4 ͒ obtained for v = 4 are in good agreement with values from a merged fit by Coxon et al,32 which included data from two prior experimental studies of OH A 2 ⌺ + ͑v =4͒: LIF excitation spectroscopy on the A 2 ⌺ + ← X 2 ⌸ ͑4,2͒ transition 13 and dispersed fluorescence spectroscopy on the B 2 ⌺ + → A 2 ⌺ + ͑1,4͒ transition.…”

Section: Discussionsupporting

confidence: 86%

See 1 more Smart Citation

Fluorescence-dip infrared spectroscopy and predissociation dynamics of OH AΣ+2 (v=4) radicals

Derro

Pollack

Dempsey

et al. 2005

The Journal of Chemical Physics

View full text Add to dashboard Cite

Fluorescence-dip infrared spectroscopy, an UV-IR double-resonance technique, is employed to characterize the line positions, linewidths, and corresponding lifetimes of highly predissociative rovibrational levels of the excited A (2)Sigma(+) electronic state of the OH radical. Various lines of the 4 <--2 overtone transition in the excited A (2)Sigma(+) state are observed, from which the rotational, centrifugal distortion, and spin-rotation constants for the A (2)Sigma(+) (v = 4) state are determined, along with the vibrational frequency for the overtone transition. Homogeneous linewidths of 0.23-0.31 cm(-1) full width at half maximum are extracted from the line profiles, demonstrating that the N = 0 to 7 rotational levels of the OH A (2)Sigma(+) (v = 4) state undergo rapid predissociation with lifetimes of < or =23 ps. The experimental linewidths are in near quantitative agreement with first-principles theoretical predictions.

show abstract

Section: Discussionsupporting

confidence: 86%

“…13,14,32 The predissociation dynamics of the OH A 2 ⌺ + ͑v =4͒ state is examined through linewidth measurements. The UV excitation prepares a single rovibronic level of the A 2 ⌺ + ͑vЈ =2͒ state, and subsequent IR excitation is used to access the A 2 ⌺ + ͑v =4͒ state.…”

Section: Discussionmentioning

confidence: 99%

Fluorescence-dip infrared spectroscopy and predissociation dynamics of OH AΣ+2 (v=4) radicals

Derro

Pollack

Dempsey

et al. 2005

The Journal of Chemical Physics

View full text Add to dashboard Cite

show abstract

“…Interrogations of ground-state or ground-level populations employ laser-induced fluorescence [50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68] with practical applications to combustion diagnosis [69][70][71][72][73][74]. However, diagnosis applications are based on extensive studies of the ultraviolet OH system [75][76][77][78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93].…”

Section: Mini-summary Of Oh Literature and Applicationsmentioning

confidence: 99%

Laser-Plasma Spectroscopy of Hydroxyl with Applications

et al. 2020

View full text Add to dashboard Cite

This article discusses laser-induced laboratory-air plasma measurements and analysis of hydroxyl (OH) ultraviolet spectra. The computations of the OH spectra utilize line strength data that were developed previously and that are now communicated for the first time. The line strengths have been utilized extensively in interpretation of recorded molecular emission spectra and have been well-tested in laser-induced fluorescence applications for the purpose of temperature inferences from recorded data. Moreover, new experiments with Q-switched laser pulses illustrate occurrence of molecular recombination spectra for time delays of the order of several dozen of microseconds after plasma initiation. The OH signals occur due to the natural humidity in laboratory air. Centrifugal stretching of the Franck-Condon factors and r-centroids are included in the process of determining the line strengths that are communicated as a Supplementary File. Laser spectroscopy applications of detailed OH computations include laser-induced plasma and combustion analyses, to name but two applications. This work also includes literature references that address various diagnosis applications.

show abstract

“…Interrogations of ground-state or ground-level populations employ laser-induced fluorescence with practical applications to combustion diagnosis [64][65][66][67][68][69][70][71]. LIF and the specific example of combustion analysis however are based on extensive studies of the ultraviolet OH system [72][73][74][75][76][77][78][79][80][81][82][83][84][85][86][87][88][89][90].…”

Section: Mini Summary Of Oh Literaturementioning

confidence: 99%

Laser-Plasma Spectroscopy of Hydroxyl with Applications

Parigger¹,

Helstern²,

Jordan³

et al. 2020

Preprint

View full text Add to dashboard Cite

This article discusses laser-induced laboratory-air plasma measurements and analysis of hydroxyl (OH) ultraviolet spectra. New experiments with Q-switched laser pulses illustrate occurrence of molecular recombination spectra for time delays of the order of several dozen of microseconds after plasma initiation. The computation of the emission spectra utilizes line strength data that are communicated as a supplementary file. Applications of detailed OH computations include laser-induced plasma and combustion analyses, to name but two applications.

show abstract

Molecular constants and term values for the hydroxyl radical, OH: The X2Π (v = 8, 12), A2Σ+ (v = 4–9), B2Σ+ (v = 0, 1), and C2Σ+ (v = 0, 1) states

Cited by 32 publications

References 9 publications

Fluorescence-dip infrared spectroscopy and predissociation dynamics of OH AΣ+2 (v=4) radicals

Fluorescence-dip infrared spectroscopy and predissociation dynamics of OH AΣ+2 (v=4) radicals

Laser-Plasma Spectroscopy of Hydroxyl with Applications

Laser-Plasma Spectroscopy of Hydroxyl with Applications

Contact Info

Product

Resources

About