| Project/Area Number |
16K17705
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
|
|---|
| Research Institution | National Institute of Advanced Industrial Science and Technology (2017)
Tokyo University of Science (2016) |
|---|
Principal Investigator |
Michishio Koji 国立研究開発法人産業技術総合研究所, 計量標準総合センター, 研究員 (10710840)
|
|---|
| Project Period (FY) |
2016-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
|
|---|
| Keywords | ポジトロニウム負イオン / 光脱離 / レーザー分光 / 原子・分子物理 / 陽電子 / 量子ビーム / 粒子線 |
|---|
| Outline of Final Research Achievements |
In the present study, we performed a measurement of the photodetachment cross-section of the positronium negative ion, a bound state of two electrons and one positron, aimed at revealing its dynamics. The cross-section at a wavelength of 1064 nm was determined by measuring the yield of positronium atoms formed via photodetachment as a function of the laser power. Additionally the electron affinity of the ion was also determined by employing recoil momentum spectroscopy with the light polarization.
|
