Meeting room "Glova", 4 floor, Integrated Research Building
Abstract
Hydrogen hydrate is made of hydrogen-bonded water molecules forming cages or frameworks that include hydrogen molecules. Recently, hydrogen hydrate is expected to exist in protostar and extrasolar planets. Thus, hydrogen hydrate could potentially hold hydrogen to high temperature in bodies previously. The examination of high pressure stabilities of hydrogen hydrate is important to estimate the formation and evolution process of the protostar and planets. The previous high pressure experiments of hydrogen hydrate revealed intermolecular interactions which induce the remarkable stability of hydrogen hydrate existed in the structure. However, the reasons for the intermolecular interactions in hydrogen hydrate have not yet been clarified. Thus, the high pressure experiments of hydrogen hydrate were performed by using diamond anvil cell. In this seminar, the results of the high pressure experiments of deuterated hydrogen hydrate will be shown and the phase changes and the vibrational changes will be discussed. The results obtained from deuterated hydrogen hydrate are compared with those from H2-H2O hydrogen hydrate. Then, the isotopic effects and intermolecular interactions in hydrogen hydrate will be discussed.
For inquiry：Taku Tsuchiya TEL:（089）927-8198
E-mail takut@sci.ehime-u.ac.jp
