First observation of the 13Li ground state

被引：37

作者：

Kohley, Z. ^{[1
]}

Lunderberg, E. ^{[2
]}

DeYoung, P. A. ^{[2
]}

Volya, A. ^{[3
]}

Baumann, T. ^{[1
]}

Bazin, D. ^{[1
]}

Christian, G. ^{[1
,4
]}

Cooper, N. L. ^{[5
]}

Frank, N. ^{[6
]}

Gade, A. ^{[1
,4
]}

Hall, C. ^{[2
]}

Hinnefeld, J. ^{[5
]}

Luther, B. ^{[7
]}

Mosby, S. ^{[1
,4
]}

Peters, W. A. ^{[1
,4
]}

Smith, J. K. ^{[1
,4
]}

Snyder, J. ^{[1
,4
]}

Spyrou, A. ^{[1
,4
]}

Thoennessen, M. ^{[1
,4
]}

机构：

[1] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[2] Hope Coll, Dept Phys, Holland, MI 49422 USA

[3] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

[4] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[5] Indiana Univ, Dept Phys & Astron, South Bend, IN 46634 USA

[6] Augustana Coll, Dept Phys & Astron, Rock Isl, IL 61201 USA

[7] Concordia Coll, Dept Phys, Moorhead, MN 56562 USA

来源：

PHYSICAL REVIEW C | 2013年 / 87卷 / 01期

基金：

美国国家科学基金会;

关键词：

ISOTOPES; NUCLEI; HALO;

D O I：

10.1103/PhysRevC.87.011304

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The ground state of neutron-rich unbound Li-13 was observed for the first time in a one-proton removal reaction from Be-14 at a beam energy of 53.6 MeV/u. The Li-13 ground state was reconstructed from Li-11 and two neutrons giving a resonance energy of 120(-80)(+60) keV. All events involving single-and double-neutron interactions in the Modular Neutron Array (MoNA) were analyzed, simulated, and fitted self-consistently. The three-body (Li-11 + n + n) correlations within Jacobi coordinates showed strong dineutron characteristics. The decay energy spectrum of the intermediate Li-12 system (Li-11 + n) was described with an s-wave scattering length of greater than -4 fm, which is a smaller absolute value than reported in a previous measurement. DOI: 10.1103/PhysRevC.87.011304

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