Role of OH radicals in the formation of oxygen molecules following vacuum ultraviolet photodissociation of amorphous solid water

Tetsuya Hama; Masaaki Yokoyama; Akihiro Yabushita; Masahiro Kawasaki

doi:10.1063/1.3474999

Role of OH radicals in the formation of oxygen molecules following vacuum ultraviolet photodissociation of amorphous solid water

Tetsuya Hama, Masaaki Yokoyama, Akihiro Yabushita, Masahiro Kawasaki

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

10 被引用数 (Scopus)

抄録

Photodesorption of O₂ (X³∑^g _-) and O₂ (a Δ¹_g) from amorphous solid water at 90 K has been studied following photoexcitation within the first absorption band at 157 nm. Time-of-flight and rotational spectra of O₂ reveal the translational and internal energy distributions, from which production mechanisms are deduced. Exothermic and endothermic reactions of OH+O (³P) are proposed as plausible formation mechanisms for O ₂ (X ³∑_g^- and a ¹Δ _g). To examine the contribution of the O ( ³P) +O (³P) recombination reaction to the O₂ formation following 157 nm photolysis of amorphous solid water, O₂ products following 193 nm photodissociation of SO₂ adsorbed on amorphous solid water were also investigated.

本文言語	英語
論文番号	104504
ジャーナル	Journal of Chemical Physics
巻	133
号	10
DOI	https://doi.org/10.1063/1.3474999
出版ステータス	出版済み - 9月 14 2010
外部発表	はい

!!!All Science Journal Classification (ASJC) codes

物理学および天文学（全般）
物理化学および理論化学

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10.1063/1.3474999

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引用スタイル

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title = "Role of OH radicals in the formation of oxygen molecules following vacuum ultraviolet photodissociation of amorphous solid water",

abstract = "Photodesorption of O2 (X3∑g -) and O2 (a Δ1g) from amorphous solid water at 90 K has been studied following photoexcitation within the first absorption band at 157 nm. Time-of-flight and rotational spectra of O2 reveal the translational and internal energy distributions, from which production mechanisms are deduced. Exothermic and endothermic reactions of OH+O (3P) are proposed as plausible formation mechanisms for O 2 (X 3∑g- and a 1Δ g). To examine the contribution of the O ( 3P) +O (3P) recombination reaction to the O2 formation following 157 nm photolysis of amorphous solid water, O2 products following 193 nm photodissociation of SO2 adsorbed on amorphous solid water were also investigated.",

author = "Tetsuya Hama and Masaaki Yokoyama and Akihiro Yabushita and Masahiro Kawasaki",

note = "Funding Information: This work was supported by a Grant-in-Aid from the JSPS (Grant No. 20245005). The authors thank Dr. R. Wada of Nagoya University for useful suggestions in simulation of the rotational spectra of the O 2 molecules. ",

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T1 - Role of OH radicals in the formation of oxygen molecules following vacuum ultraviolet photodissociation of amorphous solid water

AU - Hama, Tetsuya

AU - Yokoyama, Masaaki

AU - Yabushita, Akihiro

AU - Kawasaki, Masahiro

N1 - Funding Information: This work was supported by a Grant-in-Aid from the JSPS (Grant No. 20245005). The authors thank Dr. R. Wada of Nagoya University for useful suggestions in simulation of the rotational spectra of the O 2 molecules.

PY - 2010/9/14

Y1 - 2010/9/14

N2 - Photodesorption of O2 (X3∑g -) and O2 (a Δ1g) from amorphous solid water at 90 K has been studied following photoexcitation within the first absorption band at 157 nm. Time-of-flight and rotational spectra of O2 reveal the translational and internal energy distributions, from which production mechanisms are deduced. Exothermic and endothermic reactions of OH+O (3P) are proposed as plausible formation mechanisms for O 2 (X 3∑g- and a 1Δ g). To examine the contribution of the O ( 3P) +O (3P) recombination reaction to the O2 formation following 157 nm photolysis of amorphous solid water, O2 products following 193 nm photodissociation of SO2 adsorbed on amorphous solid water were also investigated.

AB - Photodesorption of O2 (X3∑g -) and O2 (a Δ1g) from amorphous solid water at 90 K has been studied following photoexcitation within the first absorption band at 157 nm. Time-of-flight and rotational spectra of O2 reveal the translational and internal energy distributions, from which production mechanisms are deduced. Exothermic and endothermic reactions of OH+O (3P) are proposed as plausible formation mechanisms for O 2 (X 3∑g- and a 1Δ g). To examine the contribution of the O ( 3P) +O (3P) recombination reaction to the O2 formation following 157 nm photolysis of amorphous solid water, O2 products following 193 nm photodissociation of SO2 adsorbed on amorphous solid water were also investigated.

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