Observation of a low-lying neutron-unbound state in 19C

M. Thoennessen; S. Mosby; N. S. Badger; T. Baumann; D. Bazin; M. Bennett; J. Brown; G. Christian; P. A. DeYoung; J. E. Finck; M. Gardner; E. A. Hook; B. Luther; D. A. Meyer; M. Mosby; W. F. Rogers; J. K. Smith; A. Spyrou; M. J. Strongman

doi:10.1016/j.nuclphysa.2013.05.001

Observation of a low-lying neutron-unbound state in ¹⁹C

M. Thoennessen^*, S. Mosby, N. S. Badger, T. Baumann, D. Bazin, M. Bennett, J. Brown, G. Christian, P. A. DeYoung, J. E. Finck, M. Gardner, E. A. Hook, B. Luther, D. A. Meyer, M. Mosby, W. F. Rogers, J. K. Smith, A. Spyrou, M. J. Strongman

^*Corresponding author for this work

Physics and Astronomy

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

5 Scopus citations

Abstract

Proton removal reactions from a secondary ²²N beam were utilized to populate unbound states in neutron-rich carbon isotopes. Neutrons were measured with the Modular Neutron Array (MoNA) in coincidence with carbon fragments. A resonance with a decay energy of 76(14) keV was observed in the system C18+n corresponding to a state in ¹⁹C at an excitation energy of 653(95) keV. This resonance could correspond to the first 5/^{2 +} state which was recently speculated to be unbound in order to describe 1n and 2n removal cross section measurements from ²⁰C.

Original language	English (US)
Pages (from-to)	1-6
Number of pages	6
Journal	Nuclear Physics A
Volume	912
DOIs	https://doi.org/10.1016/j.nuclphysa.2013.05.001
State	Published - Aug 1 2013

Funding

We would like to thank Robert Haring-Kaye and Sharon Stephenson for their valuable comments. This work was supported by the National Science Foundation under grants PHY-05-55488 , PHY-05-55439 , PHY-06-51627 , PHY-06-06007 , PHY-08-55456 , PHY-09-69173 , and PHY-11-02511 .

Keywords

C deduced
Calculated
Measured
Nuclear reactions

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/j.nuclphysa.2013.05.001

Cite this

Thoennessen, M., Mosby, S., Badger, N. S., Baumann, T., Bazin, D., Bennett, M., Brown, J., Christian, G., DeYoung, P. A., Finck, J. E., Gardner, M., Hook, E. A., Luther, B., Meyer, D. A., Mosby, M., Rogers, W. F., Smith, J. K., Spyrou, A., & Strongman, M. J. (2013). Observation of a low-lying neutron-unbound state in ¹⁹C. Nuclear Physics A, 912, 1-6. https://doi.org/10.1016/j.nuclphysa.2013.05.001

@article{27fb3d46efa74d19ba9c6eb52ca631eb,

title = "Observation of a low-lying neutron-unbound state in 19C",

abstract = "Proton removal reactions from a secondary 22N beam were utilized to populate unbound states in neutron-rich carbon isotopes. Neutrons were measured with the Modular Neutron Array (MoNA) in coincidence with carbon fragments. A resonance with a decay energy of 76(14) keV was observed in the system C18+n corresponding to a state in 19C at an excitation energy of 653(95) keV. This resonance could correspond to the first 5/2 + state which was recently speculated to be unbound in order to describe 1n and 2n removal cross section measurements from 20C.",

keywords = "C deduced, Calculated, Measured, Nuclear reactions",

author = "M. Thoennessen and S. Mosby and Badger, {N. S.} and T. Baumann and D. Bazin and M. Bennett and J. Brown and G. Christian and DeYoung, {P. A.} and Finck, {J. E.} and M. Gardner and Hook, {E. A.} and B. Luther and Meyer, {D. A.} and M. Mosby and Rogers, {W. F.} and Smith, {J. K.} and A. Spyrou and Strongman, {M. J.}",

note = "Funding Information: We would like to thank Robert Haring-Kaye and Sharon Stephenson for their valuable comments. This work was supported by the National Science Foundation under grants PHY-05-55488 , PHY-05-55439 , PHY-06-51627 , PHY-06-06007 , PHY-08-55456 , PHY-09-69173 , and PHY-11-02511 .",

year = "2013",

month = aug,

day = "1",

doi = "10.1016/j.nuclphysa.2013.05.001",

language = "English (US)",

volume = "912",

pages = "1--6",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

}

Thoennessen, M, Mosby, S, Badger, NS, Baumann, T, Bazin, D, Bennett, M, Brown, J, Christian, G, DeYoung, PA, Finck, JE, Gardner, M, Hook, EA, Luther, B, Meyer, DA, Mosby, M, Rogers, WF, Smith, JK, Spyrou, A & Strongman, MJ 2013, 'Observation of a low-lying neutron-unbound state in ¹⁹C', Nuclear Physics A, vol. 912, pp. 1-6. https://doi.org/10.1016/j.nuclphysa.2013.05.001

TY - JOUR

T1 - Observation of a low-lying neutron-unbound state in 19C

AU - Thoennessen, M.

AU - Mosby, S.

AU - Badger, N. S.

AU - Baumann, T.

AU - Bazin, D.

AU - Bennett, M.

AU - Brown, J.

AU - Christian, G.

AU - DeYoung, P. A.

AU - Finck, J. E.

AU - Gardner, M.

AU - Hook, E. A.

AU - Luther, B.

AU - Meyer, D. A.

AU - Mosby, M.

AU - Rogers, W. F.

AU - Smith, J. K.

AU - Spyrou, A.

AU - Strongman, M. J.

N1 - Funding Information: We would like to thank Robert Haring-Kaye and Sharon Stephenson for their valuable comments. This work was supported by the National Science Foundation under grants PHY-05-55488 , PHY-05-55439 , PHY-06-51627 , PHY-06-06007 , PHY-08-55456 , PHY-09-69173 , and PHY-11-02511 .

PY - 2013/8/1

Y1 - 2013/8/1

N2 - Proton removal reactions from a secondary 22N beam were utilized to populate unbound states in neutron-rich carbon isotopes. Neutrons were measured with the Modular Neutron Array (MoNA) in coincidence with carbon fragments. A resonance with a decay energy of 76(14) keV was observed in the system C18+n corresponding to a state in 19C at an excitation energy of 653(95) keV. This resonance could correspond to the first 5/2 + state which was recently speculated to be unbound in order to describe 1n and 2n removal cross section measurements from 20C.

AB - Proton removal reactions from a secondary 22N beam were utilized to populate unbound states in neutron-rich carbon isotopes. Neutrons were measured with the Modular Neutron Array (MoNA) in coincidence with carbon fragments. A resonance with a decay energy of 76(14) keV was observed in the system C18+n corresponding to a state in 19C at an excitation energy of 653(95) keV. This resonance could correspond to the first 5/2 + state which was recently speculated to be unbound in order to describe 1n and 2n removal cross section measurements from 20C.

KW - C deduced

KW - Calculated

KW - Measured

KW - Nuclear reactions

UR - http://www.scopus.com/inward/record.url?scp=84878377539&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878377539&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2013.05.001

DO - 10.1016/j.nuclphysa.2013.05.001

M3 - Article

AN - SCOPUS:84878377539

SN - 0375-9474

VL - 912

SP - 1

EP - 6

JO - Nuclear Physics A

JF - Nuclear Physics A

ER -