標題: | Internal rotation and spin conversion of CH3OH in solid para-hydrogen |
作者: | Lee, YP Wu, YO Lees, RM Xu, LH Hougen, JT 應用化學系 應用化學系分子科學碩博班 Department of Applied Chemistry Institute of Molecular science |
公開日期: | 20-一月-2006 |
摘要: | The quantum solid para-hydrogen (p-H-2) has recently proven useful in matrix isolation spectroscopy. Spectral lines of compounds embedded in this host are unusually narrow, and several species have been reported to rotate in p-H-2. We found that a p-H-2 matrix inhibits rotation of isolated methanol (CH3OH) but still allows internal rotation about the C-O bond, with splittings of the E/A torsional doublet in internal rotation-coupled vibrational modes that are qualitatively consistent with those for CH3OH in the gaseous phase. This simplified high-resolution spectrum further revealed the slow conversion of nuclear spin symmetry from species E to species A in the host matrix, offering potential insight into nuclear spin conversion in astrophysical sources. |
URI: | http://dx.doi.org/10.1126/science.1121300 http://hdl.handle.net/11536/12725 |
ISSN: | 0036-8075 |
DOI: | 10.1126/science.1121300 |
期刊: | SCIENCE |
Volume: | 311 |
Issue: | 5759 |
起始頁: | 365 |
結束頁: | 368 |
顯示於類別: | 期刊論文 |