| Project/Area Number |
19H00679
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Review Section |
Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields
|
|---|
| Research Institution | Institute of Physical and Chemical Research (2022-2023)
The University of Tokyo (2019-2021) |
|---|
Principal Investigator |
ウィマー カスリン 国立研究開発法人理化学研究所, 仁科加速器科学研究センター, 客員研究員 (00748478)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
DOORNENBAL PIETER 国立研究開発法人理化学研究所, 仁科加速器科学研究センター, 専任研究員 (70574119)
鈴木 大介 国立研究開発法人理化学研究所, 仁科加速器科学研究センター, 研究員 (70769504)
|
|---|
| Project Period (FY) |
2019-04-01 – 2024-03-31
|
| Project Status |
Completed (Fiscal Year 2023)
|
| Budget Amount *help |
¥34,190,000 (Direct Cost: ¥26,300,000、Indirect Cost: ¥7,890,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Fiscal Year 2019: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
|
|---|
| Keywords | exotic nuclei / nuclear structure / nuclear spectroscopy / gamma rays / lifetime measurement / gamma-ray spectroscopy / gamma‐ray spectroscopy / structure of nuclei / gamma-rays / spectroscopy / gamma‐rays / nuclear physics / Nuclear Physics |
|---|
| Outline of Research at the Start |
本研究では、エネルギー分解能に優れたゲルマニウム検出器を導入してインビームガンマ分光を強化し、従来不可能であった高エネルギーγ線のピーク同定、偶奇核の分光や励起準位の寿命測定が可能にする。我々は日米欧の国際共同プロジェクトを構築し、国内外の高性能ゲルマニウム検出器を集め、2020年に理化学研究所「RIビームファクトリー」で得られる大強度高速不安定核ビームを利用した実験を行う。我々日本グループが、科学的インパクトが最も大きい4つの主要なテーマ、「Ca同位体の奇数核の分光」、「78Ｎiおよびその周辺の分光」、「100Sn領域の分光」、「8重極変形領域の探索」を推進し、核構造の統一的な理解を進める。
|
| Outline of Annual Research Achievements |
Within the experimental campaign of the HiCARI project "High‐resolution Cluster Array at RIBF", seven experiments have been performed in FY20. Additional data has been taken for the commissioning and characterization of the array. All experiments were very successful, and the analysis is progressing.
New software tools for analysis and simulation have been written and tested.
Throughout FY21 to 23 we have held regular analysis meeting. Results have been presented at many international conferences in invited and contributed talks. Publications in annual reports and conference proceedings have appeared and first journal submissions are accepted. 4 PhD theses focusing on the results obtained within this project have been successfully defended. 4 papers are currently under review or accepted for publication.
The physics cases have addressed several open questions regarding the structure and shape of exotic nuclei.
As a highlight, we have performed excited state lifetime measurements in 110Zr, a nucleus located at the edge of current knowledge and found experimental indications for strong triaxial deformation which has implications for the stability of neutron-rich nuclei as well as the nucleo-synthesis and chemical evolution of the universe.
|
| Research Progress Status |
令和5年度が最終年度であるため、記入しない。
|
| Strategy for Future Research Activity |
令和5年度が最終年度であるため、記入しない。
|
