Isospin Symmetry at High Spin Studied via Nucleon Knockout from Isomeric States

S. A. Milne; M. A. Bentley; E. C. Simpson; T. Baugher; D. Bazin; J. S. Berryman; A. M. Bruce; P. J. Davies; C. Aa Diget; A. Gade; T. W. Henry; H. Iwasaki; A. Lemasson; S. M. Lenzi; S. McDaniel; D. R. Napoli; A. J. Nichols; A. Ratkiewicz; L. Scruton; S. R. Stroberg; J. A. Tostevin; D. Weisshaar; K. Wimmer; R. Winkler

doi:10.1103/PhysRevLett.117.082502

Isospin Symmetry at High Spin Studied via Nucleon Knockout from Isomeric States

S. A. Milne, M. A. Bentley, E. C. Simpson, T. Baugher, D. Bazin, J. S. Berryman, A. M. Bruce, P. J. Davies, C. Aa Diget, A. Gade, T. W. Henry, H. Iwasaki, A. Lemasson, S. M. Lenzi, S. McDaniel, D. R. Napoli, A. J. Nichols, A. Ratkiewicz, L. Scruton, S. R. StrobergJ. A. Tostevin, D. Weisshaar, K. Wimmer, R. Winkler

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

Abstract

One-neutron knockout reactions have been performed on a beam of radioactive Co53 in a high-spin isomeric state. The analysis is shown to yield a highly selective population of high-spin states in an exotic nucleus with a significant cross section, and hence represents a technique that is applicable to the planned new generation of fragmentation-based radioactive beam facilities. Additionally, the relative cross sections among the excited states can be predicted to a high level of accuracy when reliable shell-model input is available. The work has resulted in a new level scheme, up to the 11+ band-termination state, of the proton-rich nucleus Co52 (Z=27, N=25). This has in turn enabled a study of mirror energy differences in the A=52 odd-odd mirror nuclei, interpreted in terms of isospin-nonconserving (INC) forces in nuclei. The analysis demonstrates the importance of using a full set of J-dependent INC terms to explain the experimental observations.

Original language	English
Article number	082502
Number of pages	5
Journal	Physical Review Letters
Volume	117
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.117.082502
Publication status	Published - 15 Aug 2016

Bibliographical note

© 2016 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

Access to Document

10.1103/PhysRevLett.117.082502

Milne_resubmission
© 2016 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
Accepted author manuscript, 579 KB

Cite this

Milne, S. A., Bentley, M. A., Simpson, E. C., Baugher, T., Bazin, D., Berryman, J. S., Bruce, A. M., Davies, P. J., Diget, C. A., Gade, A., Henry, T. W., Iwasaki, H., Lemasson, A., Lenzi, S. M., McDaniel, S., Napoli, D. R., Nichols, A. J., Ratkiewicz, A., Scruton, L., ... Winkler, R. (2016). Isospin Symmetry at High Spin Studied via Nucleon Knockout from Isomeric States. Physical Review Letters, 117(8), Article 082502. https://doi.org/10.1103/PhysRevLett.117.082502

@article{5b7fc8cd5f5f4dc6af7d7e98cb3c9dc7,

title = "Isospin Symmetry at High Spin Studied via Nucleon Knockout from Isomeric States",

abstract = "One-neutron knockout reactions have been performed on a beam of radioactive Co53 in a high-spin isomeric state. The analysis is shown to yield a highly selective population of high-spin states in an exotic nucleus with a significant cross section, and hence represents a technique that is applicable to the planned new generation of fragmentation-based radioactive beam facilities. Additionally, the relative cross sections among the excited states can be predicted to a high level of accuracy when reliable shell-model input is available. The work has resulted in a new level scheme, up to the 11+ band-termination state, of the proton-rich nucleus Co52 (Z=27, N=25). This has in turn enabled a study of mirror energy differences in the A=52 odd-odd mirror nuclei, interpreted in terms of isospin-nonconserving (INC) forces in nuclei. The analysis demonstrates the importance of using a full set of J-dependent INC terms to explain the experimental observations.",

author = "Milne, {S. A.} and Bentley, {M. A.} and Simpson, {E. C.} and T. Baugher and D. Bazin and Berryman, {J. S.} and Bruce, {A. M.} and Davies, {P. J.} and Diget, {C. Aa} and A. Gade and Henry, {T. W.} and H. Iwasaki and A. Lemasson and Lenzi, {S. M.} and S. McDaniel and Napoli, {D. R.} and Nichols, {A. J.} and A. Ratkiewicz and L. Scruton and Stroberg, {S. R.} and Tostevin, {J. A.} and D. Weisshaar and K. Wimmer and R. Winkler",

note = "{\textcopyright} 2016 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. Further copying may not be permitted; contact the publisher for details",

year = "2016",

month = aug,

day = "15",

doi = "10.1103/PhysRevLett.117.082502",

language = "English",

volume = "117",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "8",

}

Milne, SA , Bentley, MA , Simpson, EC, Baugher, T, Bazin, D, Berryman, JS, Bruce, AM, Davies, PJ , Diget, CA, Gade, A, Henry, TW, Iwasaki, H, Lemasson, A, Lenzi, SM, McDaniel, S, Napoli, DR, Nichols, AJ, Ratkiewicz, A, Scruton, L, Stroberg, SR, Tostevin, JA, Weisshaar, D, Wimmer, K & Winkler, R 2016, 'Isospin Symmetry at High Spin Studied via Nucleon Knockout from Isomeric States', Physical Review Letters, vol. 117, no. 8, 082502. https://doi.org/10.1103/PhysRevLett.117.082502

TY - JOUR

T1 - Isospin Symmetry at High Spin Studied via Nucleon Knockout from Isomeric States

AU - Milne, S. A.

AU - Bentley, M. A.

AU - Simpson, E. C.

AU - Baugher, T.

AU - Bazin, D.

AU - Berryman, J. S.

AU - Bruce, A. M.

AU - Davies, P. J.

AU - Diget, C. Aa

AU - Gade, A.

AU - Henry, T. W.

AU - Iwasaki, H.

AU - Lemasson, A.

AU - Lenzi, S. M.

AU - McDaniel, S.

AU - Napoli, D. R.

AU - Nichols, A. J.

AU - Ratkiewicz, A.

AU - Scruton, L.

AU - Stroberg, S. R.

AU - Tostevin, J. A.

AU - Weisshaar, D.

AU - Wimmer, K.

AU - Winkler, R.

N1 - © 2016 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2016/8/15

Y1 - 2016/8/15

N2 - One-neutron knockout reactions have been performed on a beam of radioactive Co53 in a high-spin isomeric state. The analysis is shown to yield a highly selective population of high-spin states in an exotic nucleus with a significant cross section, and hence represents a technique that is applicable to the planned new generation of fragmentation-based radioactive beam facilities. Additionally, the relative cross sections among the excited states can be predicted to a high level of accuracy when reliable shell-model input is available. The work has resulted in a new level scheme, up to the 11+ band-termination state, of the proton-rich nucleus Co52 (Z=27, N=25). This has in turn enabled a study of mirror energy differences in the A=52 odd-odd mirror nuclei, interpreted in terms of isospin-nonconserving (INC) forces in nuclei. The analysis demonstrates the importance of using a full set of J-dependent INC terms to explain the experimental observations.

AB - One-neutron knockout reactions have been performed on a beam of radioactive Co53 in a high-spin isomeric state. The analysis is shown to yield a highly selective population of high-spin states in an exotic nucleus with a significant cross section, and hence represents a technique that is applicable to the planned new generation of fragmentation-based radioactive beam facilities. Additionally, the relative cross sections among the excited states can be predicted to a high level of accuracy when reliable shell-model input is available. The work has resulted in a new level scheme, up to the 11+ band-termination state, of the proton-rich nucleus Co52 (Z=27, N=25). This has in turn enabled a study of mirror energy differences in the A=52 odd-odd mirror nuclei, interpreted in terms of isospin-nonconserving (INC) forces in nuclei. The analysis demonstrates the importance of using a full set of J-dependent INC terms to explain the experimental observations.

UR - http://www.scopus.com/inward/record.url?scp=84984971045&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.117.082502

DO - 10.1103/PhysRevLett.117.082502

M3 - Article

AN - SCOPUS:84984971045

SN - 0031-9007

VL - 117

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

M1 - 082502

ER -

Isospin Symmetry at High Spin Studied via Nucleon Knockout from Isomeric States

Abstract

Bibliographical note

Access to Document

Other files and links

Mike BENTLEY

Mirror Nuclei studied at NSCL (Michigan) using mirrored direct knockout

Isospin-symmetry breaking in nuclei

Nuclear Physics Consolidated Grant

Cite this

Isospin Symmetry at High Spin Studied via Nucleon Knockout from Isomeric States

Abstract

Bibliographical note

Access to Document

Other files and links

Profiles

Mike BENTLEY

Projects

Mirror Nuclei studied at NSCL (Michigan) using mirrored direct knockout

Isospin-symmetry breaking in nuclei

Nuclear Physics Consolidated Grant

Cite this