Development of a target system of stopped unstable nuclei for studies of resonance states in unstable nuclei

2015 Fiscal Year Final Research Report

• Project/Area Number: 24654066
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Osaka University
• Principal Investigator: TAMII Atsushi 大阪大学, 核物理研究センター, 准教授 (20302804)
• Co-Investigator(Renkei-kenkyūsha): FUJITA Yoshitaka 大阪大学, 核物理研究センター, 准教授 (60093457) ; SUZUKI Tomokazu 大阪大学, 核物理研究センター, 助教 (80506395)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 不安定核停止標的 / ビッグバン元素合成 / 不安定核構造

Outline of Final Research Achievements

We have developed a system of stopped unstable nucleus target for studies of excited states of unstable nuclei and low-energy nuclear reactions that are relevant to nuclear astrophysics. We have successfully demonstrated the achievability of those measurements.
Implanted stable nucleus targets were produced by bombarding a deuteron beam on metallic foils in 1 mm diameter. By irradiating a higher energy deuteron beam on the target, deuteron-deuteron fusion reaction has been successfully detected.
Next unstable beryllium nuclei were produced by bombarding a proton beam on lithium target in 1 mm diameter. By irradiating a deuteron beam on the target, outgoing protons produced by the nuclear reaction with an beryllium nucleus and a deuteron has been successfully identified. This is the first successful measurement of nuclear reactions with stopped unstable nucleus target in a small area.

Free Research Field

実験核物理