Посилання:Quantum property of solid hydrogen as revealed by high-resolution laser spectroscopy / Hiroyuki Katsuki, Mizuho Fushitani, Takamasa Momose // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 1093-1100. — Бібліогр.: 25 назв. — англ.
Підтримка:The work described herein was supported in part by the Grant-in Aid for Scientific Research of the Ministry of Education, Science, Culture, and Sports of Japan. The authors would like to thank Prof. H. Meyer who drew our attention to the problems of solid deuterium. Further, H. Katsuki would also like to acknowledge the support from JSPS Research Fellowships for Young Scientists.
Pure vibrational overtone transitions of solid parahydrogen were studied using high-resolution laser spectroscopy. Extremely narrow spectral linewidth (~20 MHz) allowed us to observe rich spectral structure that originates in subtle intermolecular interactions in the crystal. It was found that anisotropy of the distribution of zero-point lattice vibration of hydrogen molecules perturbs the energy levels of the vibrationally excited states significantly. Large amplitude of the zero-point lattice vibration being an intrinsic nature of quantum solids, was directly observed from the present high-resolution spectroscopy. The first observation of a pure vibrational overtone transition of solid orthodeuterium is also discussed.