Two neutron decay from the 21+ state of 6He

Yuma Kikuchi, Takuma Matsumoto, Kosho Minomo, Kazuyuki Ogata

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Decay mode of the 21+ resonant state of 6He populated by the 6He breakup reaction by 12C at 240 MeV/nucleon is investigated. The continuum-discretized coupled-channels method is adopted to describe the formation of the 21+ state, whereas its decay is described by the complex-scaled solutions of the Lippmann-Schwinger equation. From analysis of invariant mass spectra with respect to the α-n and n-n subsystems, coexistence of two decay modes is found. One is the simultaneous decay of two neutrons correlating with each other and the other is the emission of two neutrons to the opposite directions. The latter is found to be free from the final-state interaction and suggests existence of a dineutron in the 21+ state of 6He.

Original languageEnglish
Article number021602
JournalPhysical Review C - Nuclear Physics
Volume88
Issue number2
DOIs
Publication statusPublished - Aug 30 2013

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neutron decay
decay
neutrons
mass spectra
continuums
interactions

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Two neutron decay from the 21+ state of 6He. / Kikuchi, Yuma; Matsumoto, Takuma; Minomo, Kosho; Ogata, Kazuyuki.

In: Physical Review C - Nuclear Physics, Vol. 88, No. 2, 021602, 30.08.2013.

Research output: Contribution to journalArticle

Kikuchi, Yuma ; Matsumoto, Takuma ; Minomo, Kosho ; Ogata, Kazuyuki. / Two neutron decay from the 21+ state of 6He. In: Physical Review C - Nuclear Physics. 2013 ; Vol. 88, No. 2.
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