Study of the Lambda hypernuclei close to the neutron drip-line by the double charge-exchange reaction

2014 Fiscal Year Final Research Report

• Project/Area Number: 24540305
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Osaka University
• Principal Investigator: SAKAGUCHI Atsushi 大阪大学, 理学(系)研究科(研究院), 准教授 (70205730)
• Co-Investigator(Renkei-kenkyūsha): FUKUDA Tomokazu 大阪電気通信大学, 工学部, 教授 (50116092) ; AJIMURA Shuhei 大阪大学, 核物理研究センター, 准教授 (10273575) ; MIZOI Yutaka 大阪電気通信大学, 工学部, 講師 (30388392)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 中性子過剰ラムダ・ハイパー核 / 二重荷電交換反応 / 中性子ドリップライン / 大強度中間子ビーム

Outline of Final Research Achievements

The subject of this research is a study of new nuclei 'Lambda hypernuclei' for which a Lambda hyperon, one of baryon with the strangeness degree of freedom, is embedded in nuclei. The double charge-exchange reaction is employed to create and study neutron-rich Lambda hypernuclei. One of difficulties in the measurement of the double charge-exchange reaction is the tiny reaction cross section. To override the difficulty, high-intensity hadron beams are used, and detectors are developed for the high beam rate environment. An experiment to search for the neutron-rich Lambda hypernucleus 6(Lambda)H close to the neutron drip-line was performed at the J-PARC 50GeV Proton Synchrotoron Accelerator facility.

Free Research Field

実験核物理