Selective population of unbound states in 10Li

J. K. Smith; T. Baumann; J. Brown; P. A. DeYoung; N. Frank; J. Hinnefeld; Z. Kohley; B. Luther; B. Marks; A. Spyrou; S. L. Stephenson; M. Thoennessen; S. J. Williams

doi:10.1016/j.nuclphysa.2015.04.011

Selective population of unbound states in ¹⁰Li

J. K. Smith^*, T. Baumann, J. Brown, P. A. DeYoung, N. Frank, J. Hinnefeld, Z. Kohley, B. Luther, B. Marks, A. Spyrou, S. L. Stephenson, M. Thoennessen, S. J. Williams

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Unbound positive-parity states in ¹⁰Li have been populated with a two-proton removal reaction from a 71 MeV/u ¹²B beam. The ⁹Li fragments and emitted neutrons were measured with the MoNA-LISA-Sweeper setup. The measured decay energy spectrum was best fit with three states at 110±40, 500±100, and 1100±100 keV decay energy. This is the second observation of a resonance below 200 keV. The lower two states likely belong to the expected 1⁺, 2⁺ doublet.

Original language	English (US)
Pages (from-to)	235-241
Number of pages	7
Journal	Nuclear Physics A
Volume	940
DOIs	https://doi.org/10.1016/j.nuclphysa.2015.04.011
State	Published - Aug 1 2015

Funding

This work was funded by NSF grants PHY09-69173 , PHY11-02511 , PHY12-05537 , and PHY13-06074 . This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award No. DE-NA0000979 .

Keywords

Exotic nuclei
Neutron spectroscopy

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/j.nuclphysa.2015.04.011

Cite this

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title = "Selective population of unbound states in 10Li",

abstract = "Unbound positive-parity states in 10Li have been populated with a two-proton removal reaction from a 71 MeV/u 12B beam. The 9Li fragments and emitted neutrons were measured with the MoNA-LISA-Sweeper setup. The measured decay energy spectrum was best fit with three states at 110±40, 500±100, and 1100±100 keV decay energy. This is the second observation of a resonance below 200 keV. The lower two states likely belong to the expected 1+, 2+ doublet.",

keywords = "Exotic nuclei, Neutron spectroscopy",

author = "Smith, {J. K.} and T. Baumann and J. Brown and DeYoung, {P. A.} and N. Frank and J. Hinnefeld and Z. Kohley and B. Luther and B. Marks and A. Spyrou and Stephenson, {S. L.} and M. Thoennessen and Williams, {S. J.}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

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doi = "10.1016/j.nuclphysa.2015.04.011",

language = "English (US)",

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T1 - Selective population of unbound states in 10Li

AU - Smith, J. K.

AU - Baumann, T.

AU - Brown, J.

AU - DeYoung, P. A.

AU - Frank, N.

AU - Hinnefeld, J.

AU - Kohley, Z.

AU - Luther, B.

AU - Marks, B.

AU - Spyrou, A.

AU - Stephenson, S. L.

AU - Thoennessen, M.

AU - Williams, S. J.

PY - 2015/8/1

Y1 - 2015/8/1

N2 - Unbound positive-parity states in 10Li have been populated with a two-proton removal reaction from a 71 MeV/u 12B beam. The 9Li fragments and emitted neutrons were measured with the MoNA-LISA-Sweeper setup. The measured decay energy spectrum was best fit with three states at 110±40, 500±100, and 1100±100 keV decay energy. This is the second observation of a resonance below 200 keV. The lower two states likely belong to the expected 1+, 2+ doublet.

AB - Unbound positive-parity states in 10Li have been populated with a two-proton removal reaction from a 71 MeV/u 12B beam. The 9Li fragments and emitted neutrons were measured with the MoNA-LISA-Sweeper setup. The measured decay energy spectrum was best fit with three states at 110±40, 500±100, and 1100±100 keV decay energy. This is the second observation of a resonance below 200 keV. The lower two states likely belong to the expected 1+, 2+ doublet.

KW - Exotic nuclei

KW - Neutron spectroscopy

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