Photodissociation of Methyl Iodide via Selected Vibrational Levels of the B̃ (2E3/2)6s Rydberg State

2015 ◽  
Vol 119 (28) ◽  
pp. 7548-7558 ◽  
Author(s):  
Hong Xu ◽  
S. T. Pratt
Keyword(s):  
Methyl Iodide ◽  
Rydberg State ◽  
Vibrational Levels

Rydberg state dynamics of methyl iodide dimers and clusters revisited

1990 ◽  
Vol 94 (19) ◽  
pp. 7739-7740 ◽  
Author(s):  
Aviv. Amirav ◽  
Abraham. Penner
Keyword(s):  
Methyl Iodide ◽  
Rydberg State

scholarly journals Coupled Nuclear-Electronic Decay Dynamics of O2 Inner Valence Excited States Revealed by Attosecond XUV Wave-Mixing Spectroscopy

2020 ◽  
Author(s):  
Yen-Cheng Lin ◽  
Ashley Fidler ◽  
Arvinder Sandhu ◽  
Robert R. Lucchese ◽  
C. William McCurdy ◽  
...  
Keyword(s):  
Rydberg State ◽  
Extreme Ultraviolet ◽  
Strong Dependence ◽  
Model Systems ◽  
Theoretical Treatment ◽  
Wave Mixing ◽  
Rydberg Series ◽  
Transient Wave ◽  
Decay Channels ◽  
Vibrational Levels

Multiple Rydberg series converging to the O<sub>2</sub><sup>+</sup> 𝑐 <sup>4</sup>Σ<sub>𝑢</sub><sup>−</sup> state, accessed by 20-25 eV extreme ultraviolet (XUV) light, serve as important model systems for the competition between nuclear dissociation and electronic autoionization. The dynamics of the lowest member of these series, the <i>3sσg</i> state around 21 eV, has been challenging to study owing to its ultra-short lifetime (< 10 fs). Here, we apply transient wave-mixing spectroscopy with an attosecond XUV pulse to investigate the decay dynamics of this electronic state. Lifetimes of 5.8±0.5 fs and 4.5±0.7 fs at 95% confidence intervals are obtained for v=0 and v=1 vibrational levels of the 3s Rydberg state, respectively. A theoretical treatment of predissociation and electronic autoionization finds that these lifetimes are dominated by electronic autoionization. The strong dependence of the electronic autoionization rate on the internuclear distance because of two ionic decay channels that cross the <i>3s</i> Rydberg state results in the different lifetimes of the two vibrational levels. The calculated lifetimes are highly sensitive to the location of the <i>3s</i> potential with respect to the decay channels; by slight adjustment of the location, values of 6.2 and 5.0 fs are obtained computationally for the v=0 and v=1 levels, respectively, in good agreement with experiment. Overall, an intriguing picture of the coupled nuclear-electronic dynamics is revealed by attosecond XUV wave-mixing spectroscopy, indicating that the decay dynamics are not a simple competition between isolated autoionization and predissociation processes.

Reply to comments on "Rydberg state dynamics of methyl iodide dimers and clusters revisited"

1990 ◽  
Vol 94 (19) ◽  
pp. 7740-7741 ◽  
Author(s):  
V. Vaida ◽  
D. J. Donaldson ◽  
R. Naaman
Keyword(s):  
Methyl Iodide ◽  
Rydberg State

Strong field effects in the spectroscopy of the ~B Rydberg state of methyl iodide

1990 ◽  
Vol 94 (19) ◽  
pp. 7343-7346 ◽  
Author(s):  
J. A. Syage ◽  
J. Steadman
Keyword(s):  
Methyl Iodide ◽  
Rydberg State ◽  
Strong Field ◽  
Field Effects

The diffuse v=4 and 5 vibrational levels of the B1Σ+ Rydberg state of carbon monoxide

2005 ◽  
Vol 408 (4-6) ◽  
pp. 312-316 ◽  
Author(s):  
Jacob Baker
Keyword(s):  
Carbon Monoxide ◽  
Rydberg State ◽  
Vibrational Levels

scholarly journals Coupled Nuclear-Electronic Decay Dynamics of O2 Inner Valence Excited States Revealed by Attosecond XUV Wave-Mixing Spectroscopy

2020 ◽  
Author(s):  
Yen-Cheng Lin ◽  
Ashley Fidler ◽  
Arvinder Sandhu ◽  
Robert R. Lucchese ◽  
C. William McCurdy ◽  
...  
Keyword(s):  
Rydberg State ◽  
Extreme Ultraviolet ◽  
Strong Dependence ◽  
Model Systems ◽  
Theoretical Treatment ◽  
Wave Mixing ◽  
Rydberg Series ◽  
Transient Wave ◽  
Decay Channels ◽  
Vibrational Levels

Multiple Rydberg series converging to the O<sub>2</sub><sup>+</sup> 𝑐 <sup>4</sup>Σ<sub>𝑢</sub><sup>−</sup> state, accessed by 20-25 eV extreme ultraviolet (XUV) light, serve as important model systems for the competition between nuclear dissociation and electronic autoionization. The dynamics of the lowest member of these series, the <i>3sσg</i> state around 21 eV, has been challenging to study owing to its ultra-short lifetime (< 10 fs). Here, we apply transient wave-mixing spectroscopy with an attosecond XUV pulse to investigate the decay dynamics of this electronic state. Lifetimes of 5.8±0.5 fs and 4.5±0.7 fs at 95% confidence intervals are obtained for v=0 and v=1 vibrational levels of the 3s Rydberg state, respectively. A theoretical treatment of predissociation and electronic autoionization finds that these lifetimes are dominated by electronic autoionization. The strong dependence of the electronic autoionization rate on the internuclear distance because of two ionic decay channels that cross the <i>3s</i> Rydberg state results in the different lifetimes of the two vibrational levels. The calculated lifetimes are highly sensitive to the location of the <i>3s</i> potential with respect to the decay channels; by slight adjustment of the location, values of 6.2 and 5.0 fs are obtained computationally for the v=0 and v=1 levels, respectively, in good agreement with experiment. Overall, an intriguing picture of the coupled nuclear-electronic dynamics is revealed by attosecond XUV wave-mixing spectroscopy, indicating that the decay dynamics are not a simple competition between isolated autoionization and predissociation processes.

A REMPI investigation of methyl iodide Rydberg state predissociation

1990 ◽  
Vol 173 (2-3) ◽  
pp. 257-264 ◽  
Author(s):  
Steven P. Sapers ◽  
D.J. Donaldson
Keyword(s):  
Methyl Iodide ◽  
Rydberg State

Femtosecond dynamics of a predissociative Rydberg state of methyl iodide

1992 ◽  
Vol 193 (6) ◽  
pp. 527-531 ◽  
Author(s):  
Hua Guo
Keyword(s):  
Methyl Iodide ◽  
Rydberg State ◽  
Femtosecond Dynamics
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