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 language | English |
|---|---|
| Article number | 021602 |
| Journal | Physical Review C - Nuclear Physics |
| Volume | 88 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Aug 30 2013 |
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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 journal › Article
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TY - JOUR
T1 - Two neutron decay from the 21+ state of 6He
AU - Kikuchi, Yuma
AU - Matsumoto, Takuma
AU - Minomo, Kosho
AU - Ogata, Kazuyuki
PY - 2013/8/30
Y1 - 2013/8/30
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevC.88.021602
DO - 10.1103/PhysRevC.88.021602
M3 - Article
AN - SCOPUS:84884258117
VL - 88
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
SN - 0556-2813
IS - 2
M1 - 021602
ER -