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Proceedings Paper

Highly-resolved (2+1) nonlinear resonantly-enhanced multiphoton ionization of supersonically jet-cooled H2O and D2O molecules
Author(s): Watheq Al-Basheer
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Paper Abstract

Highly-resolved spectra of (2+1) resonance-enhanced multiphoton ionization (REMPI) for nozzle-jet expanded molecular beams of H2O and D2O molecules seeded in Ar and He gases of 1% concentration are presented. The third Harmonic output (λ=355 nm) of a seeded Q-switch Nd:YAG laser was employed to pump an OPO laser, consequently, the VUV output of frequencydoubled OPO radiation was directly used to photo-ionize the jet-cooled sample molecules. By monitoring the H2O+ and D2O+ parent ions signals, highly resolved mass and photoionization spectra were recorded by probing the C-band via a (2+1) REMPI process and over the spectral range 80400 – 81000 cm-1. In this study, highly resolved mass and REMPI spectra of the C-band of H2O and D2O will be presented. Moreover, the effect of seeding gas effect on sample molecules as well as the nature of the photoionization spectra will be discussed.

Paper Details

Date Published: 1 April 2020
PDF: 8 pages
Proc. SPIE 11358, Nonlinear Optics and its Applications 2020, 113581S (1 April 2020);
Show Author Affiliations
Watheq Al-Basheer, King Fahd Univ. of Petroleum and Minerals (Saudi Arabia)

Published in SPIE Proceedings Vol. 11358:
Nonlinear Optics and its Applications 2020
Neil G. R. Broderick; John M. Dudley; Anna C. Peacock, Editor(s)

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