| Project/Area Number |
02452036
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
固体物性
|
|---|
| Research Institution | Gifu University |
|---|
Principal Investigator |
SHIMIZU Hiroyasu Gifu University, Dept. of Electronics, Professor, 工学部, 教授 (80023258)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SASAKI Shigeo Gifu University, Dept. of Electronics, Assistant, 工学部, 助手 (30196159)
|
|---|
| Project Period (FY) |
1990 – 1992
|
| Project Status |
Completed (Fiscal Year 1992)
|
| Budget Amount *help |
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1992: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1991: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1990: ¥5,600,000 (Direct Cost: ¥5,600,000)
|
|---|
| Keywords | Acoustic Phonon Spectroscopy / Ultrahigh-Pressure Brillouin Scattering / Hydrogen Sulfide / Crystal Growth / Elastic Constant / 6フッ化イオウ / 分子ダイナミクス / エタノ-ル / 硫化カルボニル / ダイヤモンドアンビルセル |
|---|
| Research Abstract |
High-pressure acoustic Brillouin spectroscopy has been applied to molecular solids hydrogen sulfide (H2S) and carbon dioxide (CO2) at pressures up to 6 GPa and room temperature. The best fit of the angular dependence of Brillouin acoustic velocities between experimental values and calculations based on Every's expression for elastic waves of an arbitrary direction yielded the orientation of H2S and CO2 cubic-phase crystal grown in the diamond-anvil high-pressure cell. In situ determinations of sound velocities, as a function of pressure, could be made for any direction, the refractive index, the density, and the elastic constants.
This method provides a mean for the systematic study of elastic properties and phase transitions of condensed gases under ultrahigh pressures.
|
