A desorption mechanism of water following vacuum-ultraviolet irradiation on amorphous solid water at 90 K

Tetsuya Hama, Masaaki Yokoyama, Akihiro Yabushita, Masahiro Kawasaki, Stefan Andersson, Colin M. Western, Michael N.R. Ashfold, Richard N. Dixon, Naoki Watanabe

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Following 157 nm photoexcitation of amorphous solid water and polycrystalline water ice, photodesorbed water molecules (H2 O and D2 O), in the ground vibrational state, have been observed using resonance-enhanced multiphoton ionization detection methods. Time-of-flight and rotationally resolved spectra of the photodesorbed water molecules were measured, and the kinetic and internal energy distributions were obtained. The measured energy distributions are in good accord with those predicted by classical molecular dynamics calculations for the kick-out mechanism of a water molecule from the ice surface by a hot hydrogen (deuterium) atom formed by photodissociation of a neighboring water molecule. Desorption of D2 O following 193 nm photoirradiation of a D2 O/ H2 S mixed ice was also investigated to provide further direct evidence for the operation of a kick-out mechanism.

Original languageEnglish
Article number164508
JournalJournal of Chemical Physics
Volume132
Issue number16
DOIs
Publication statusPublished - Apr 28 2010

Fingerprint

Desorption
desorption
Irradiation
Vacuum
vacuum
irradiation
Water
Ice
water
ice
Molecules
molecules
energy distribution
Photodissociation
Photoexcitation
Deuterium
internal energy
photoexcitation
vibrational states
photodissociation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

A desorption mechanism of water following vacuum-ultraviolet irradiation on amorphous solid water at 90 K. / Hama, Tetsuya; Yokoyama, Masaaki; Yabushita, Akihiro; Kawasaki, Masahiro; Andersson, Stefan; Western, Colin M.; Ashfold, Michael N.R.; Dixon, Richard N.; Watanabe, Naoki.

In: Journal of Chemical Physics, Vol. 132, No. 16, 164508, 28.04.2010.

Research output: Contribution to journalArticle

Hama, T, Yokoyama, M, Yabushita, A, Kawasaki, M, Andersson, S, Western, CM, Ashfold, MNR, Dixon, RN & Watanabe, N 2010, 'A desorption mechanism of water following vacuum-ultraviolet irradiation on amorphous solid water at 90 K', Journal of Chemical Physics, vol. 132, no. 16, 164508. https://doi.org/10.1063/1.3386577
Hama, Tetsuya ; Yokoyama, Masaaki ; Yabushita, Akihiro ; Kawasaki, Masahiro ; Andersson, Stefan ; Western, Colin M. ; Ashfold, Michael N.R. ; Dixon, Richard N. ; Watanabe, Naoki. / A desorption mechanism of water following vacuum-ultraviolet irradiation on amorphous solid water at 90 K. In: Journal of Chemical Physics. 2010 ; Vol. 132, No. 16.
@article{9c2eeacd5065450f81ad995def41f61a,
title = "A desorption mechanism of water following vacuum-ultraviolet irradiation on amorphous solid water at 90 K",
abstract = "Following 157 nm photoexcitation of amorphous solid water and polycrystalline water ice, photodesorbed water molecules (H2 O and D2 O), in the ground vibrational state, have been observed using resonance-enhanced multiphoton ionization detection methods. Time-of-flight and rotationally resolved spectra of the photodesorbed water molecules were measured, and the kinetic and internal energy distributions were obtained. The measured energy distributions are in good accord with those predicted by classical molecular dynamics calculations for the kick-out mechanism of a water molecule from the ice surface by a hot hydrogen (deuterium) atom formed by photodissociation of a neighboring water molecule. Desorption of D2 O following 193 nm photoirradiation of a D2 O/ H2 S mixed ice was also investigated to provide further direct evidence for the operation of a kick-out mechanism.",
author = "Tetsuya Hama and Masaaki Yokoyama and Akihiro Yabushita and Masahiro Kawasaki and Stefan Andersson and Western, {Colin M.} and Ashfold, {Michael N.R.} and Dixon, {Richard N.} and Naoki Watanabe",
year = "2010",
month = "4",
day = "28",
doi = "10.1063/1.3386577",
language = "English",
volume = "132",
journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics Publising LLC",
number = "16",

}

TY - JOUR

T1 - A desorption mechanism of water following vacuum-ultraviolet irradiation on amorphous solid water at 90 K

AU - Hama, Tetsuya

AU - Yokoyama, Masaaki

AU - Yabushita, Akihiro

AU - Kawasaki, Masahiro

AU - Andersson, Stefan

AU - Western, Colin M.

AU - Ashfold, Michael N.R.

AU - Dixon, Richard N.

AU - Watanabe, Naoki

PY - 2010/4/28

Y1 - 2010/4/28

N2 - Following 157 nm photoexcitation of amorphous solid water and polycrystalline water ice, photodesorbed water molecules (H2 O and D2 O), in the ground vibrational state, have been observed using resonance-enhanced multiphoton ionization detection methods. Time-of-flight and rotationally resolved spectra of the photodesorbed water molecules were measured, and the kinetic and internal energy distributions were obtained. The measured energy distributions are in good accord with those predicted by classical molecular dynamics calculations for the kick-out mechanism of a water molecule from the ice surface by a hot hydrogen (deuterium) atom formed by photodissociation of a neighboring water molecule. Desorption of D2 O following 193 nm photoirradiation of a D2 O/ H2 S mixed ice was also investigated to provide further direct evidence for the operation of a kick-out mechanism.

AB - Following 157 nm photoexcitation of amorphous solid water and polycrystalline water ice, photodesorbed water molecules (H2 O and D2 O), in the ground vibrational state, have been observed using resonance-enhanced multiphoton ionization detection methods. Time-of-flight and rotationally resolved spectra of the photodesorbed water molecules were measured, and the kinetic and internal energy distributions were obtained. The measured energy distributions are in good accord with those predicted by classical molecular dynamics calculations for the kick-out mechanism of a water molecule from the ice surface by a hot hydrogen (deuterium) atom formed by photodissociation of a neighboring water molecule. Desorption of D2 O following 193 nm photoirradiation of a D2 O/ H2 S mixed ice was also investigated to provide further direct evidence for the operation of a kick-out mechanism.

UR - http://www.scopus.com/inward/record.url?scp=77952360762&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77952360762&partnerID=8YFLogxK

U2 - 10.1063/1.3386577

DO - 10.1063/1.3386577

M3 - Article

C2 - 20441289

AN - SCOPUS:77952360762

VL - 132

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 16

M1 - 164508

ER -