INFRARED STUDIES OF AR(H-2)(2) AT LOW-TEMPERATURE AND HIGH-PRESSURE

Authors
ULIVI L BINI R JODL HJ LOUBEYRE P LETOULLEC R DATCHI F
Citation
L. Ulivi et al., INFRARED STUDIES OF AR(H-2)(2) AT LOW-TEMPERATURE AND HIGH-PRESSURE, Journal of low temperature physics, 111(3-4), 1998, pp. 703-708
Citations number
9
Categorie Soggetti
Physics, Applied
Journal title
Journal of low temperature physics → ACNP
ISSN journal
00222291
Volume
111
Issue
3-4
Year of publication
1998
Pages
703 - 708
Database
ISI
SICI code
0022-2291(1998)111:3-4<703:ISOAAL>2.0.ZU;2-3
Abstract
An extensive infrared absorption study of the compound AT(H-2)(2) in t he range of pressure from 5 to 90 GPa, and between 30 It and room temp erature is presented. This study has permitted the identification and assignment of high-frequency and low frequency vibron-phonon combinati on bands, as well as of the roto-vibrational bands. Spectra changes lo wering temperature, with the appearance of the Q(1)(0) vibrational pea k, are interpreted as arising from conversion of ortho-hydrogen into p ara-hydrogen in the solid.