First observation of the 13Li ground state

Kohley, Z.; Lunderberg, E.; DeYoung, P. A.; Volya, A.; Baumann, T.; Bazin, D.; Christian, G.; Cooper, N. L.; Frank, N.; Gade, A.; Hall, C.; Hinnefeld, J.; Luther, B.; Mosby, S.; Peters, W. A.; Smith, J. K.; Snyder, J.; Spyrou, A.; Thoennessen, M.

doi:10.1103/PhysRevC.87.011304

Title: First observation of the $^{13}$ Li ground state

Abstract

The ground state of neutron-rich unbound 13Li was observed for the first time in a one-proton removal reaction from 14Be at a beam energy of 53.6 MeV/u. The 13Li ground state was reconstructed from 11Li and two neutrons giving a resonance energy of 120+60 -80 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 ( 11Li + n + n) correlations within Jacobi coordinates showed strong dineutron characteristics. The decay energy spectrum of the intermediate 12Li system (11Li + 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.

Authors:

Kohley, Z. ^[1]; Lunderberg, E. ^[2]; DeYoung, P. A. ^[2]; Volya, A. ^[3]; Baumann, T. ^[1]; Bazin, D. ^[1]; Christian, G. ^[1]; Cooper, N. L. ^[4]; Frank, N. ^[5]; Gade, A. ^[1]; Hall, C. ^[2]; Hinnefeld, J. ^[4]; Luther, B. ^[6]; Mosby, S. ^[1]; Peters, W. A. ^[1]; Smith, J. K. ^[1]; Snyder, J. ^[1]; Spyrou, A. ^[1]; Thoennessen, M. ^[1]

Michigan State Univ., East Lansing, MI (United States)
Hope College, Holland, MI (United States)
Florida State Univ., Tallahassee, FL (United States)
Indiana Univ., South Bend, IN (United States)
Augustana College, Rock Island (United States)
Concordia College, Moorhead, MN (United States)

Publication Date:: Thu Jan 31 00:00:00 EST 2013

Research Org.:: Nuclear Science and Security Consortium, Berkely, CA (United States); Nuclear Science and Security Consortium

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1454858

Alternate Identifier(s):: OSTI ID: 1101996; OSTI ID: 1454857

Grant/Contract Number:: NA0000979

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C, Nuclear Physics

Additional Journal Information:: Journal Volume: 87; Journal Issue: 1; Journal ID: ISSN 0556-2813

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Kohley, Z., Lunderberg, E., DeYoung, P. A., Volya, A., Baumann, T., Bazin, D., Christian, G., Cooper, N. L., Frank, N., Gade, A., Hall, C., Hinnefeld, J., Luther, B., Mosby, S., Peters, W. A., Smith, J. K., Snyder, J., Spyrou, A., and Thoennessen, M. First observation of the 13Li ground state.  United States: N. p., 2013. 
Web.  doi:10.1103/PhysRevC.87.011304.

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                    Kohley, Z., Lunderberg, E., DeYoung, P. A., Volya, A., Baumann, T., Bazin, D., Christian, G., Cooper, N. L., Frank, N., Gade, A., Hall, C., Hinnefeld, J., Luther, B., Mosby, S., Peters, W. A., Smith, J. K., Snyder, J., Spyrou, A., & Thoennessen, M. First observation of the 13Li ground state.  United States.  https://doi.org/10.1103/PhysRevC.87.011304

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                    Kohley, Z., Lunderberg, E., DeYoung, P. A., Volya, A., Baumann, T., Bazin, D., Christian, G., Cooper, N. L., Frank, N., Gade, A., Hall, C., Hinnefeld, J., Luther, B., Mosby, S., Peters, W. A., Smith, J. K., Snyder, J., Spyrou, A., and Thoennessen, M. Thu .  
"First observation of the 13Li ground state".  United States.  https://doi.org/10.1103/PhysRevC.87.011304.  https://www.osti.gov/servlets/purl/1454858.

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@article{osti_1454858,

  title        = {First observation of the 13Li ground state},

  author       = {Kohley, Z. and Lunderberg, E. and DeYoung, P. A. and Volya, A. and Baumann, T. and Bazin, D. and Christian, G. and Cooper, N. L. and Frank, N. and Gade, A. and Hall, C. and Hinnefeld, J. and Luther, B. and Mosby, S. and Peters, W. A. and Smith, J. K. and Snyder, J. and Spyrou, A. and Thoennessen, M.},

  abstractNote = {The ground state of neutron-rich unbound 13Li was observed for the first time in a one-proton removal reaction from 14Be at a beam energy of 53.6 MeV/u. The 13Li ground state was reconstructed from 11Li and two neutrons giving a resonance energy of 120+60 -80 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 ( 11Li + n + n) correlations within Jacobi coordinates showed strong dineutron characteristics. The decay energy spectrum of the intermediate 12Li system (11Li + 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},

  journal      = {Physical Review C, Nuclear Physics},

  number       = 1,

  volume       = 87,

  place        = {United States},

  year         = {Thu Jan 31 00:00:00 EST 2013},

  month        = {Thu Jan 31 00:00:00 EST 2013}

}

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https://doi.org/10.1103/PhysRevC.87.011304

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Cited by: 32 works

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Figures / Tables:

FIG. 1: (color online) Measured three-body decay energy spectrum of ¹¹Li+2$n$ without (a) and with (b) causality cuts as described in the text. The experimental data is fit with two components: (1) the dineutron decay of ¹³Li → ¹¹Li+2$n$ (red long-dashed line) and (2) the ¹²Li → ¹¹Li+$n$ decay (bluemore »

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Title: First observation of the 13 Li ground state

Abstract

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Title: First observation of the $^{13}$ Li ground state

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