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Threshold ionization spectroscopy of H2O, HDO and D2O and low-lying vibrational levels of HDO+ and D2O
Rotationally resolved photoelectron spectra of jet-cooled H 2 O, HDO and D 2 O have been recorded near the origin of the photoionising transition following single-photon ionization using the complementary techniques of mass-analysed threshold-ionization (MATI) and pulsed-field-ionization zero-kineti...
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| Published in: | Molecular physics 2015-12, Vol.113 (24), p.3918-3924 |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Rotationally resolved photoelectron spectra of jet-cooled H
2
O, HDO and D
2
O have been recorded near the origin of the
photoionising transition following single-photon ionization using the complementary techniques of mass-analysed threshold-ionization (MATI) and pulsed-field-ionization zero-kinetic-energy (PFI-ZEKE) photoelectron spectroscopy. A gas mixture of H
2
O, HDO and D
2
O with Ar was obtained by mixing H
2
O (ℓ) and D
2
O (ℓ) in a reservoir and bubbling Ar gas through the mixture. To unambiguously assign the photoelectron bands to H
2
O, HDO or D
2
O, the PFI-ZEKE photoelectron spectra of the mixture were compared to MATI spectra and to spectra of H
2
O. Analysis of the rotational structure of the origin bands (v
+
1
= 0, v
2
+
= 0, v
+
3
= 0) ← (v
1
= 0, v
2
= 0, v
3
= 0) of H
2
O, HDO and D
2
O and of the transitions to the (010), (020) and (100) levels of D
2
O
+
and the first excited level of the O-D stretching mode of HDO
+
provided new information on the photoionization dynamics of water and the energy level structure of HDO
+
and D
2
O
+
. |
|---|---|
| ISSN: | 0026-8976 1362-3028 |
| DOI: | 10.1080/00268976.2015.1049971 |