Photolysis of phenylsilane at 193 nm: energy distributions of the fragments

1994 ◽  
Vol 98 (1) ◽  
pp. 122-125 ◽  
Author(s):  
Haruki Ishikawa ◽  
Okitsugu Kajimoto
Keyword(s):  
Energy Distributions ◽  
193 Nm

Vibrational Energy Distributions of NH2(X̃2B1) Fragments Generated in the Photolysis of NH3at 193 nm:  Application of Kinetic Analysis on Vibrational Cascade

2002 ◽  
Vol 106 (34) ◽  
pp. 7728-7735 ◽  
Author(s):  
Katsuyoshi Yamasaki ◽  
Akihiro Watanabe ◽  
Teruaki Kakuda ◽  
Akira Itakura ◽  
Hirofumi Fukushima ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Vibrational Energy ◽  
Energy Distributions ◽  
193 Nm

Photodissociation of acryloyl chloride at 193 nm: interpretation of the product energy distributions, and new elimination pathways

2016 ◽  
Vol 18 (6) ◽  
pp. 5019-5026 ◽  
Author(s):  
Raúl Pérez-Soto ◽  
Saulo A. Vázquez ◽  
Emilio Martínez-Núñez
Keyword(s):  
Search Method ◽  
Acryloyl Chloride ◽  
Energy Distributions ◽  
193 Nm

The use of an automated TS search method leads to the finding of novel HCl elimination pathways.

scholarly journals Photodissociation Dynamics of the Tert-Butyl Perthiyl Radical

2020 ◽  
Author(s):  
Bethan Nichols ◽  
Erin Sullivan ◽  
Daniel Neumark
Keyword(s):  
Excited State ◽  
Translational Energy ◽  
Energy Distributions ◽  
Dissociation Process ◽  
The Third ◽  
Available Energy ◽  
Three Body ◽  
A Minor ◽  
193 Nm ◽  
State Dissociation

<p>The photodissociation dynamics of the <i>tert</i>-butyl perthiyl (<i>t</i>-BuSS) radical are investigated by fast-beam coincidence translational spectroscopy. A fast (6-8 keV) beam of neutral <i>t</i>-BuSS radicals is produced via photodetachment of the corresponding anion, followed by photodissociation at 248 nm (5.00 eV) or 193 nm (6.42 eV) and coincident detection of the neutral products. Photofragment mass and translational energy distributions are obtained at both wavelengths. At 248 nm, the dominant product channel (90%) is found to be S loss, with a product translational energy distribution that peaks close to the maximum available energy and an anisotropic photofragment angular distribution, indicating dissociation along a repulsive excited state. A minor channel (10%) leading to the formation of S<sub>2</sub> + <i>t</i>-Bu is also observed. At 193 nm, both two- and three-body dissociation are observed. Formation of S<sub>2</sub> + <i>t</i>-Bu is the dominant two-body product channel, with multiple electronic states of the S<sub>2</sub> molecule produced via excited state dissociation processes. Formation of S + <i>t</i>-BuS is a minor two-body channel at this dissociation energy. The three-body channels are S<sub>2</sub> + H + isobutene, S<sub>2</sub> + CH<sub>3</sub> + propene, and S + SH + isobutene. The first two of these channels result from a sequential dissociation process in which loss of S<sub>2</sub> from <i>t</i>-BuSS results in ground state <i>t</i>-Bu with sufficient internal energy to undergo secondary fragmentation. The third three-body channel, S + SH + isobutene, is attributed to loss of internally excited HS<sub>2</sub> from <i>t</i>-BuSS, which then rapidly dissociates to form S + SH in an asynchronous concerted dissociation process. </p>

Photodissociation dynamics of acetone at 193 nm: Photofragment internal and translational energy distributions

1989 ◽  
Vol 91 (12) ◽  
pp. 7498-7513 ◽  
Author(s):  
Karen A. Trentelman ◽  
Scott H. Kable ◽  
David B. Moss ◽  
Paul L. Houston
Keyword(s):  
Translational Energy ◽  
Energy Distributions ◽  
193 Nm

scholarly journals Photodissociation Dynamics of the Tert-Butyl Perthiyl Radical

2020 ◽  
Author(s):  
Bethan Nichols ◽  
Erin Sullivan ◽  
Daniel Neumark
Keyword(s):  
Excited State ◽  
Translational Energy ◽  
Energy Distributions ◽  
Dissociation Process ◽  
The Third ◽  
Available Energy ◽  
Three Body ◽  
A Minor ◽  
193 Nm ◽  
State Dissociation

<p>The photodissociation dynamics of the <i>tert</i>-butyl perthiyl (<i>t</i>-BuSS) radical are investigated by fast-beam coincidence translational spectroscopy. A fast (6-8 keV) beam of neutral <i>t</i>-BuSS radicals is produced via photodetachment of the corresponding anion, followed by photodissociation at 248 nm (5.00 eV) or 193 nm (6.42 eV) and coincident detection of the neutral products. Photofragment mass and translational energy distributions are obtained at both wavelengths. At 248 nm, the dominant product channel (90%) is found to be S loss, with a product translational energy distribution that peaks close to the maximum available energy and an anisotropic photofragment angular distribution, indicating dissociation along a repulsive excited state. A minor channel (10%) leading to the formation of S<sub>2</sub> + <i>t</i>-Bu is also observed. At 193 nm, both two- and three-body dissociation are observed. Formation of S<sub>2</sub> + <i>t</i>-Bu is the dominant two-body product channel, with multiple electronic states of the S<sub>2</sub> molecule produced via excited state dissociation processes. Formation of S + <i>t</i>-BuS is a minor two-body channel at this dissociation energy. The three-body channels are S<sub>2</sub> + H + isobutene, S<sub>2</sub> + CH<sub>3</sub> + propene, and S + SH + isobutene. The first two of these channels result from a sequential dissociation process in which loss of S<sub>2</sub> from <i>t</i>-BuSS results in ground state <i>t</i>-Bu with sufficient internal energy to undergo secondary fragmentation. The third three-body channel, S + SH + isobutene, is attributed to loss of internally excited HS<sub>2</sub> from <i>t</i>-BuSS, which then rapidly dissociates to form S + SH in an asynchronous concerted dissociation process. </p>

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