2013 Fiscal Year Final Research Report
Development of high efficient gas cell for collecting the r-process nuclei around N=126 and producing the high purity beam of the nuclei
| Project/Area Number |
24740180
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
|
|---|
| Research Institution | High Energy Accelerator Research Organization |
|---|
Principal Investigator |
HIRAYAMA Yoshikazu 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (30391733)
|
|---|
| Project Period (FY) |
2012-04-01 – 2014-03-31
|
| Keywords | 国際情報交換 / ベルギー / 元素合成 / アルゴンガスセル / レーザー共鳴イオン化 |
|---|
| Research Abstract |
By measuring the half-lives of neutron-rich radioactive nuclei with N=126, it is considered that it is possible to understand the process of nucleosynthesis of heavy elements by a rapid neutron-capture reaction in the cosmos. In order to understand the process, we have developed an argon gas-cell with laser ionization for producing an element- and mass-selected radioactive ion beam. The design of a gas cell was optimized by using a flow simulation. The basic property of the gas cell was investigated from the off-line test using a filament placed in the gas cell and from the on-line test using an accelerated beam at RIKEN facility. We have successfully produced an element- and mass-selected ion beam, whose extraction time of about 200 ms was faster than the gas cell produced so far. Owing to the gas cell, we can measure the half-lives of the radioactive nuclei with N=126 for understanding the element synthesis in the cosmos.
|
