Evidence for ultra-fast dissociation of molecular water from resonant Auger spectroscopy
(2001) In Chemical Physics Letters 334(1-3). p.151-158- Abstract
We present direct evidence for ultra-fast dissociation of molecular water in connection photo-excitation of the O1s→4a1 resonance. The core-excited H2O molecules are shown to dissociate into core-excited O*H and neutral H on a time scale comparable to the core hole lifetime, i.e. a few femtoseconds. This conclusion is based on a resonant Auger study, qualitative arguments and ab initio calculations. 'Hot bands' connected to Auger transitions from vibrationally excited OH fragments are identified, and these exhibit a dynamical behavior which qualitatively follows the change in excess energy.
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- author
- organization
- publishing date
- 2001-02-02
- type
- Contribution to journal
- publication status
- published
- in
- Chemical Physics Letters
- volume
- 334
- issue
- 1-3
- pages
- 8 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:0000194802
- ISSN
- 0009-2614
- DOI
- 10.1016/S0009-2614(00)01434-2
- language
- English
- LU publication?
- yes
- id
- e5f8bdff-e3cf-485c-9661-004dac286279
- date added to LUP
- 2020-10-29 18:30:07
- date last changed
- 2024-05-29 23:10:45
@article{e5f8bdff-e3cf-485c-9661-004dac286279, abstract = {{<p>We present direct evidence for ultra-fast dissociation of molecular water in connection photo-excitation of the O1s→4a<sub>1</sub> resonance. The core-excited H<sub>2</sub>O molecules are shown to dissociate into core-excited O<sup>*</sup>H and neutral H on a time scale comparable to the core hole lifetime, i.e. a few femtoseconds. This conclusion is based on a resonant Auger study, qualitative arguments and ab initio calculations. 'Hot bands' connected to Auger transitions from vibrationally excited OH fragments are identified, and these exhibit a dynamical behavior which qualitatively follows the change in excess energy.</p>}}, author = {{Hjelte, I. and Piancastelli, M. N. and Fink, R. F. and Björneholm, O. and Bässler, M. and Feifel, R. and Giertz, A. and Wang, H. and Wiesner, K. and Ausmees, A. and Miron, C. and Sorensen, S. L. and Svensson, S.}}, issn = {{0009-2614}}, language = {{eng}}, month = {{02}}, number = {{1-3}}, pages = {{151--158}}, publisher = {{Elsevier}}, series = {{Chemical Physics Letters}}, title = {{Evidence for ultra-fast dissociation of molecular water from resonant Auger spectroscopy}}, url = {{http://dx.doi.org/10.1016/S0009-2614(00)01434-2}}, doi = {{10.1016/S0009-2614(00)01434-2}}, volume = {{334}}, year = {{2001}}, }