Single-neutron excitations in 18N

C. R. Hoffman; M. Albers; M. Alcorta; S. Almaraz-Calderon; B. B. Back; S. I. Baker; S. Bedoor; P. F. Bertone; B. P. Kay; J. C. Lighthall; T. Palchan; R. C. Pardo; G. Perdikakis; K. E. Rehm; A. M. Rogers; D. Santiago-Gonzalez; Cenxi Yuan; J. P. Schiffer

doi:10.1103/PhysRevC.88.044317

Single-neutron excitations in 18N

C. R. Hoffman, M. Albers, M. Alcorta, S. Almaraz-Calderon, B. B. Back, S. I. Baker, S. Bedoor, P. F. Bertone, B. P. Kay, J. C. Lighthall, T. Palchan, R. C. Pardo, G. Perdikakis, K. E. Rehm, A. M. Rogers, D. Santiago-Gonzalez, Cenxi Yuan, J. P. Schiffer

Physics

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

8 Scopus citations

Abstract

States in 18N have been populated in the neutron-adding (d,p) reaction on the short-lived 17N beam. Previously observed levels, found in this work at excitation energies of 0.12(1) MeV and 0.74(1) MeV, have been identified as those expected from a proton 0p_1/2 hole coupled to the 19O 5/2 ⁺ ground state. A new state at 1.17(2) MeV is consistent with the coupling of the 1/2^- proton-hole state to the excited 1/2⁺ state in 19O. Orbital angular momentum assignments and spectroscopic factors were determined from the measured angular distributions through a distorted wave Born approximation analysis. Systematics for the (0d5^/21s1 ^/2)3 neutron configurations in the N=11 isotones, 17C, 18N, and 19O are discussed and comparisons to p-sd shell-model calculations are made.

Original language	English
Article number	044317
Journal	Physical Review C - Nuclear Physics
Volume	88
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.88.044317
State	Published - Oct 15 2013

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Hoffman, C. R., Albers, M., Alcorta, M., Almaraz-Calderon, S., Back, B. B., Baker, S. I., Bedoor, S., Bertone, P. F., Kay, B. P., Lighthall, J. C., Palchan, T., Pardo, R. C., Perdikakis, G., Rehm, K. E., Rogers, A. M., Santiago-Gonzalez, D., Yuan, C., & Schiffer, J. P. (2013). Single-neutron excitations in 18N. Physical Review C - Nuclear Physics, 88(4), Article 044317. https://doi.org/10.1103/PhysRevC.88.044317

@article{4e62423875904116b1baae713942125d,

title = "Single-neutron excitations in 18N",

abstract = "States in 18N have been populated in the neutron-adding (d,p) reaction on the short-lived 17N beam. Previously observed levels, found in this work at excitation energies of 0.12(1) MeV and 0.74(1) MeV, have been identified as those expected from a proton 0p1/2 hole coupled to the 19O 5/2 + ground state. A new state at 1.17(2) MeV is consistent with the coupling of the 1/2- proton-hole state to the excited 1/2+ state in 19O. Orbital angular momentum assignments and spectroscopic factors were determined from the measured angular distributions through a distorted wave Born approximation analysis. Systematics for the (0d5/21s1 /2)3 neutron configurations in the N=11 isotones, 17C, 18N, and 19O are discussed and comparisons to p-sd shell-model calculations are made.",

author = "Hoffman, {C. R.} and M. Albers and M. Alcorta and S. Almaraz-Calderon and Back, {B. B.} and Baker, {S. I.} and S. Bedoor and Bertone, {P. F.} and Kay, {B. P.} and Lighthall, {J. C.} and T. Palchan and Pardo, {R. C.} and G. Perdikakis and Rehm, {K. E.} and Rogers, {A. M.} and D. Santiago-Gonzalez and Cenxi Yuan and Schiffer, {J. P.}",

year = "2013",

month = oct,

day = "15",

doi = "10.1103/PhysRevC.88.044317",

language = "English",

volume = "88",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

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Hoffman, CR, Albers, M, Alcorta, M, Almaraz-Calderon, S, Back, BB, Baker, SI, Bedoor, S, Bertone, PF, Kay, BP, Lighthall, JC, Palchan, T, Pardo, RC, Perdikakis, G, Rehm, KE, Rogers, AM, Santiago-Gonzalez, D, Yuan, C & Schiffer, JP 2013, 'Single-neutron excitations in 18N', Physical Review C - Nuclear Physics, vol. 88, no. 4, 044317. https://doi.org/10.1103/PhysRevC.88.044317

TY - JOUR

T1 - Single-neutron excitations in 18N

AU - Hoffman, C. R.

AU - Albers, M.

AU - Alcorta, M.

AU - Almaraz-Calderon, S.

AU - Back, B. B.

AU - Baker, S. I.

AU - Bedoor, S.

AU - Bertone, P. F.

AU - Kay, B. P.

AU - Lighthall, J. C.

AU - Palchan, T.

AU - Pardo, R. C.

AU - Perdikakis, G.

AU - Rehm, K. E.

AU - Rogers, A. M.

AU - Santiago-Gonzalez, D.

AU - Yuan, Cenxi

AU - Schiffer, J. P.

PY - 2013/10/15

Y1 - 2013/10/15

N2 - States in 18N have been populated in the neutron-adding (d,p) reaction on the short-lived 17N beam. Previously observed levels, found in this work at excitation energies of 0.12(1) MeV and 0.74(1) MeV, have been identified as those expected from a proton 0p1/2 hole coupled to the 19O 5/2 + ground state. A new state at 1.17(2) MeV is consistent with the coupling of the 1/2- proton-hole state to the excited 1/2+ state in 19O. Orbital angular momentum assignments and spectroscopic factors were determined from the measured angular distributions through a distorted wave Born approximation analysis. Systematics for the (0d5/21s1 /2)3 neutron configurations in the N=11 isotones, 17C, 18N, and 19O are discussed and comparisons to p-sd shell-model calculations are made.

AB - States in 18N have been populated in the neutron-adding (d,p) reaction on the short-lived 17N beam. Previously observed levels, found in this work at excitation energies of 0.12(1) MeV and 0.74(1) MeV, have been identified as those expected from a proton 0p1/2 hole coupled to the 19O 5/2 + ground state. A new state at 1.17(2) MeV is consistent with the coupling of the 1/2- proton-hole state to the excited 1/2+ state in 19O. Orbital angular momentum assignments and spectroscopic factors were determined from the measured angular distributions through a distorted wave Born approximation analysis. Systematics for the (0d5/21s1 /2)3 neutron configurations in the N=11 isotones, 17C, 18N, and 19O are discussed and comparisons to p-sd shell-model calculations are made.

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U2 - 10.1103/PhysRevC.88.044317

DO - 10.1103/PhysRevC.88.044317

M3 - Article

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SN - 0556-2813

VL - 88

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 044317

ER -

Single-neutron excitations in 18N

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