| Project/Area Number |
25887046
|
|---|
| Research Category |
Grant-in-Aid for Research Activity Start-up
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
|
|---|
| Research Institution | Tokyo University of Science |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2013-08-30 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
|---|
| Keywords | ポジトロニウム負イオン / 原子・分子物理 / 低速陽電子ビーム / 形状共鳴 / 低速陽電子 / 共鳴光脱離 / 陽電子 |
|---|
| Outline of Final Research Achievements |
In the present study, a laser spectroscopy of the positronium negative ion has been conducted in order to observe the resonances of 1P symmetry in its one-photon detachment process. By using a high-intensity ion beam and a tunable ultraviolet laser source(225 - 230 nm), we succeeded to observe a shape resonance, which is predicted above Ps (n=2) formation threshold. The estimated resonance energy is in good agreement with three-body calculations.
|
