Release of oxygen atoms and nitric oxide molecules from the ultraviolet photodissociation of nitrate adsorbed on water ice films at 100 K

Akihiro Yabushita, Noboru Kawanaka, Masahiro Kawasaki, Paul D. Hamer, Dudley E. Shallcross

研究成果: ジャーナルへの寄稿記事

14 引用 (Scopus)

抄録

Production of O(3PJ, J = 2, 1, 0) atoms from the 295-320 nm photodissociation of NO3- adsorbed on water polycrystalline ice films at 100 K was directly confirmed using the resonance-enhanced multiphoton ionization technique. Detection of the O atom signals required an induction period after deposition of HNO3 onto the ice film held at 130 K due to the slow ionization rate of HNO3 to H+ and NO3- with a rate constant of k = (5.3 ± 0.2) × 10-3 s-1. Translational energy distributions of the O atoms were represented by a combination of two Maxwell-Boltzmann energy distributions with translational temperatures of 2000 and 100 K. Direct detection of NO from the secondary photodissociation process was also successful. On the atmospheric implications, the influence of the direct release of the oxygen atoms into the air from NO3- adsorbed on the natural snowpack was included in an atmospheric model calculation on the mixing ratios of ozone and nitric oxide at the South Pole, and the results compared favorably with the field data.

元の言語英語
ページ(範囲)8629-8634
ページ数6
ジャーナルJournal of Physical Chemistry A
111
発行部数35
DOI
出版物ステータス出版済み - 9 6 2007

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Photodissociation
Ice
nitric oxide
Nitrates
photodissociation
nitrates
oxygen atoms
Nitric Oxide
ice
Oxygen
Atoms
Molecules
oxides
Water
energy distribution
water
Ionization
atoms
molecules
ionization

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry

これを引用

Release of oxygen atoms and nitric oxide molecules from the ultraviolet photodissociation of nitrate adsorbed on water ice films at 100 K. / Yabushita, Akihiro; Kawanaka, Noboru; Kawasaki, Masahiro; Hamer, Paul D.; Shallcross, Dudley E.

:: Journal of Physical Chemistry A, 巻 111, 番号 35, 06.09.2007, p. 8629-8634.

研究成果: ジャーナルへの寄稿記事

Yabushita, Akihiro ; Kawanaka, Noboru ; Kawasaki, Masahiro ; Hamer, Paul D. ; Shallcross, Dudley E. / Release of oxygen atoms and nitric oxide molecules from the ultraviolet photodissociation of nitrate adsorbed on water ice films at 100 K. :: Journal of Physical Chemistry A. 2007 ; 巻 111, 番号 35. pp. 8629-8634.
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abstract = "Production of O(3PJ, J = 2, 1, 0) atoms from the 295-320 nm photodissociation of NO3- adsorbed on water polycrystalline ice films at 100 K was directly confirmed using the resonance-enhanced multiphoton ionization technique. Detection of the O atom signals required an induction period after deposition of HNO3 onto the ice film held at 130 K due to the slow ionization rate of HNO3 to H+ and NO3- with a rate constant of k = (5.3 ± 0.2) × 10-3 s-1. Translational energy distributions of the O atoms were represented by a combination of two Maxwell-Boltzmann energy distributions with translational temperatures of 2000 and 100 K. Direct detection of NO from the secondary photodissociation process was also successful. On the atmospheric implications, the influence of the direct release of the oxygen atoms into the air from NO3- adsorbed on the natural snowpack was included in an atmospheric model calculation on the mixing ratios of ozone and nitric oxide at the South Pole, and the results compared favorably with the field data.",
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AU - Yabushita, Akihiro

AU - Kawanaka, Noboru

AU - Kawasaki, Masahiro

AU - Hamer, Paul D.

AU - Shallcross, Dudley E.

PY - 2007/9/6

Y1 - 2007/9/6

N2 - Production of O(3PJ, J = 2, 1, 0) atoms from the 295-320 nm photodissociation of NO3- adsorbed on water polycrystalline ice films at 100 K was directly confirmed using the resonance-enhanced multiphoton ionization technique. Detection of the O atom signals required an induction period after deposition of HNO3 onto the ice film held at 130 K due to the slow ionization rate of HNO3 to H+ and NO3- with a rate constant of k = (5.3 ± 0.2) × 10-3 s-1. Translational energy distributions of the O atoms were represented by a combination of two Maxwell-Boltzmann energy distributions with translational temperatures of 2000 and 100 K. Direct detection of NO from the secondary photodissociation process was also successful. On the atmospheric implications, the influence of the direct release of the oxygen atoms into the air from NO3- adsorbed on the natural snowpack was included in an atmospheric model calculation on the mixing ratios of ozone and nitric oxide at the South Pole, and the results compared favorably with the field data.

AB - Production of O(3PJ, J = 2, 1, 0) atoms from the 295-320 nm photodissociation of NO3- adsorbed on water polycrystalline ice films at 100 K was directly confirmed using the resonance-enhanced multiphoton ionization technique. Detection of the O atom signals required an induction period after deposition of HNO3 onto the ice film held at 130 K due to the slow ionization rate of HNO3 to H+ and NO3- with a rate constant of k = (5.3 ± 0.2) × 10-3 s-1. Translational energy distributions of the O atoms were represented by a combination of two Maxwell-Boltzmann energy distributions with translational temperatures of 2000 and 100 K. Direct detection of NO from the secondary photodissociation process was also successful. On the atmospheric implications, the influence of the direct release of the oxygen atoms into the air from NO3- adsorbed on the natural snowpack was included in an atmospheric model calculation on the mixing ratios of ozone and nitric oxide at the South Pole, and the results compared favorably with the field data.

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