| Project/Area Number |
06640381
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
素粒子・核・宇宙線
|
|---|
| Research Institution | Niigata University |
|---|
Principal Investigator |
SUZUKI Yasuyuki Niigata University, Department of Physics, Professer, 理学部, 教授 (70018670)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
YABANA Kazuhiro Niigata University, Graduate School of Science and Technology, Associate Profess, 自然科学研究科, 助教授 (70192789)
IKEDA Kiyomi Niigata University, Department of Physics, Professer, 理学部, 教授 (40011548)
|
|---|
| Project Period (FY) |
1994 – 1996
|
| Project Status |
Completed (Fiscal Year 1996)
|
| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1996: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1995: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1994: ¥1,300,000 (Direct Cost: ¥1,300,000)
|
|---|
| Keywords | stochastic variation / unstable nuclei / halo structure / cluster model / ハロ- / 確率論的変分 / Liアイソトープ / Beアイソトープ / 多クラスター模型 |
|---|
| Research Abstract |
A Precise variational solution has so far been limited to 3-4 body system. This is mainly because an important configuration space becomes vast with increasing number of particles and accordingly because a setup of a good variational trial function becomes difficult. This problem has been thoroughly studied and resolved as follows :
(1) The correlated Gaussian basis is advantageous for describing correlation between particles and for evaluating matrix elements analytically.
(2) Nonlinear parameters of the variational function are determined in a trial and error process of the stochastic variational method we have developed.
With this development it has become possible to get a precise solution for nuclear fewbody problems.
The stochastic variational method has been applied to the study of light nuclei in a microscopic multicluster model. Some of the results obtained include
(1) the confirmation of halo structure in ^6Li, an analog of ^6IIe.
(2) the analysis of the properties of a mirror pair in A=7-9 nuclei, such as density distribution, magnetic and quadrupole moments.
(3) the determination of resonance parameters of ^9Be and ^9B.
|
