Transient HDO rovibrational satellite peaks in solid parahydrogen: evidence of hydrogen atoms or vacancies?

• Published in: Физика низких температур
• Date: 2012
• Main Authors: Wonderly, W.R., Anderson, D.T.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2012
• Subjects: Low Temperature Spectroscopy and Radiation Effects
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/117419
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Transient HDO rovibrational satellite peaks in solid
 parahydrogen: evidence of hydrogen atoms or vacancies? / W.R. Wonderly , D.T. Anderson // Физика низких температур. — 2012. — Т. 38, № 8. — С. 853-859. — Бібліогр.: 31 назв. — англ.

We present FTIR studies of the 193 nm photolysis of fully deuterated formic acid (DCOOD) isolated in solid
 parahydrogen at 1.9 K which show evidence of transient HDO rovibrational satellite peaks. The S1 and S2 satellite
 peaks are readily detected for α-type (1₀₁ ← 0₀₀) rovibrational transitions of HDO either during or immediately
 after photolysis. Intensity measurements show the HDO b-type (1₁₁ ← 0₀₀) rovibrational transitions have
 satellite peaks as well, but due to the greater linewidth of these absorptions, the satellite peaks cannot be spectroscopically
 resolved from the monomer transition and are therefore difficult to detect. These newly identified
 HDO satellite peaks may result from the HDO photoproduct being formed next to an H atom or a vacancy in the
 parahydrogen solid. The development of the infrared spectroscopy of these satellite peaks can provide a new
 means to study radiation effects on low-temperature hydrogen solids doped with chemical species.