| Project/Area Number |
05640389
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
固体物性Ⅰ(光物性・半導体・誘電体)
|
|---|
| Research Institution | RIKKYO UNIVERSITY |
|---|
Principal Investigator |
KUBOTA Shinzo RIKKYO UNIV., DEPT.of physics.PROF, 理学部, 教授 (00062612)
|
|---|
| Project Period (FY) |
1993 – 1994
|
| Project Status |
Completed (Fiscal Year 1994)
|
| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1994: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1993: ¥1,800,000 (Direct Cost: ¥1,800,000)
|
|---|
| Keywords | Auger-free luminescence / cross-luminescence / luminescence / surface effect / non-radiative relaxation / outer-most core hole / クロス・ルミネッセンス / 固有発光 |
|---|
| Research Abstract |
The decay curves for Auger-free luminescence from BaF_2 and CsC_1 crystals excited by vuv photons and high-energy electrons from 511 keV annihilation radiation have been measured. The existence of a fast luminescence component under vuu photon excitation suggests some unknown relaxation process for the outermost-core holes which are produced in the order of 100A cm form the crystal surface. A non-exponential decay for a time decay of the Auger-free luminescence from BaF_2 crystal under vuv-photon excitation is explained by the surface quenching and the energy transfer to the excitations produced by the same photon. A strong anticorrelation between photoelectric yield spectra of BaF_2 and SrF_2 under vuv photon excitation between Auger-free luminescence yield has been observed.
|
