Mirrored one-nucleon knockout reactions to the Tz=± 32 A=53 mirror nuclei

S. A. Milne; M. A. Bentley; E. C. Simpson; P. Dodsworth; 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/PhysRevC.93.024318

Mirrored one-nucleon knockout reactions to the Tz=± 32 A=53 mirror nuclei

S. A. Milne, M. A. Bentley, E. C. Simpson, P. Dodsworth, 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. ScrutonS. R. Stroberg, J. A. Tostevin, D. Weisshaar, K. Wimmer, R. Winkler

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

Abstract

Background: The study of excited states in mirror nuclei allows us to extract information on charge-dependent (i.e., isospin-nonconserving) interactions in nuclei. Purpose: To extend previous studies of mirror nuclei in the f72 region, investigating charge symmetry breaking of the strong nuclear force. Methods: γ-ray spectroscopy has been performed for the mirror (Tz=±32) pair Ni53 and Mn53, produced via mirrored one-nucleon knockout reactions. Results: Several new transitions have been identified in Ni53 from which a new level scheme has been constructed. Cross sections for knockout have been analyzed and compared with reaction model calculations where evidence is found for knockout from high-spin isomeric states. Mirror energy differences between isobaric analog states have been computed, compared to large scale shell-model calculations, and interpreted in terms of isospin-nonconserving effects. In addition, lifetimes for the long-lived Jπ=521- analog states in both Mn53 and Ni53 have been extracted through lineshape analysis, giving half-lives of t12=120(14) ps and t12=198(12) ps, respectively. Conclusions: The inclusion of a set of isovector isospin-nonconserving matrix elements to the shell-model calculations gave the best agreement with the experimental data.

Original language	English
Article number	024318
Number of pages	10
Journal	Physical Review C
Volume	93
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.93.024318
Publication status	Published - 24 Feb 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/PhysRevC.93.024318

PhysRevC.93.024318
© 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
Final published version, 608 KBLicence: Unspecified

Cite this

Milne, S. A., Bentley, M. A., Simpson, E. C., Dodsworth, P., 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., ... Winkler, R. (2016). Mirrored one-nucleon knockout reactions to the Tz=± 32 A=53 mirror nuclei. Physical Review C, 93(2), Article 024318. https://doi.org/10.1103/PhysRevC.93.024318

@article{91150cacb73a4b1e8bbe3066c03f8674,

title = "Mirrored one-nucleon knockout reactions to the Tz=± 32 A=53 mirror nuclei",

abstract = "Background: The study of excited states in mirror nuclei allows us to extract information on charge-dependent (i.e., isospin-nonconserving) interactions in nuclei. Purpose: To extend previous studies of mirror nuclei in the f72 region, investigating charge symmetry breaking of the strong nuclear force. Methods: γ-ray spectroscopy has been performed for the mirror (Tz=±32) pair Ni53 and Mn53, produced via mirrored one-nucleon knockout reactions. Results: Several new transitions have been identified in Ni53 from which a new level scheme has been constructed. Cross sections for knockout have been analyzed and compared with reaction model calculations where evidence is found for knockout from high-spin isomeric states. Mirror energy differences between isobaric analog states have been computed, compared to large scale shell-model calculations, and interpreted in terms of isospin-nonconserving effects. In addition, lifetimes for the long-lived Jπ=521- analog states in both Mn53 and Ni53 have been extracted through lineshape analysis, giving half-lives of t12=120(14) ps and t12=198(12) ps, respectively. Conclusions: The inclusion of a set of isovector isospin-nonconserving matrix elements to the shell-model calculations gave the best agreement with the experimental data.",

author = "Milne, {S. A.} and Bentley, {M. A.} and Simpson, {E. C.} and P. Dodsworth 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 = feb,

day = "24",

doi = "10.1103/PhysRevC.93.024318",

language = "English",

volume = "93",

journal = "Physical Review C",

issn = "0556-2813",

publisher = "American Physical Society",

number = "2",

}

Milne, SA, Bentley, MA , Simpson, EC, Dodsworth, P, 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, 'Mirrored one-nucleon knockout reactions to the Tz=± 32 A=53 mirror nuclei', Physical Review C, vol. 93, no. 2, 024318. https://doi.org/10.1103/PhysRevC.93.024318

TY - JOUR

T1 - Mirrored one-nucleon knockout reactions to the Tz=± 32 A=53 mirror nuclei

AU - Milne, S. A.

AU - Bentley, M. A.

AU - Simpson, E. C.

AU - Dodsworth, P.

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 - 2016/2/24

Y1 - 2016/2/24

N2 - Background: The study of excited states in mirror nuclei allows us to extract information on charge-dependent (i.e., isospin-nonconserving) interactions in nuclei. Purpose: To extend previous studies of mirror nuclei in the f72 region, investigating charge symmetry breaking of the strong nuclear force. Methods: γ-ray spectroscopy has been performed for the mirror (Tz=±32) pair Ni53 and Mn53, produced via mirrored one-nucleon knockout reactions. Results: Several new transitions have been identified in Ni53 from which a new level scheme has been constructed. Cross sections for knockout have been analyzed and compared with reaction model calculations where evidence is found for knockout from high-spin isomeric states. Mirror energy differences between isobaric analog states have been computed, compared to large scale shell-model calculations, and interpreted in terms of isospin-nonconserving effects. In addition, lifetimes for the long-lived Jπ=521- analog states in both Mn53 and Ni53 have been extracted through lineshape analysis, giving half-lives of t12=120(14) ps and t12=198(12) ps, respectively. Conclusions: The inclusion of a set of isovector isospin-nonconserving matrix elements to the shell-model calculations gave the best agreement with the experimental data.

AB - Background: The study of excited states in mirror nuclei allows us to extract information on charge-dependent (i.e., isospin-nonconserving) interactions in nuclei. Purpose: To extend previous studies of mirror nuclei in the f72 region, investigating charge symmetry breaking of the strong nuclear force. Methods: γ-ray spectroscopy has been performed for the mirror (Tz=±32) pair Ni53 and Mn53, produced via mirrored one-nucleon knockout reactions. Results: Several new transitions have been identified in Ni53 from which a new level scheme has been constructed. Cross sections for knockout have been analyzed and compared with reaction model calculations where evidence is found for knockout from high-spin isomeric states. Mirror energy differences between isobaric analog states have been computed, compared to large scale shell-model calculations, and interpreted in terms of isospin-nonconserving effects. In addition, lifetimes for the long-lived Jπ=521- analog states in both Mn53 and Ni53 have been extracted through lineshape analysis, giving half-lives of t12=120(14) ps and t12=198(12) ps, respectively. Conclusions: The inclusion of a set of isovector isospin-nonconserving matrix elements to the shell-model calculations gave the best agreement with the experimental data.

UR - http://www.scopus.com/inward/record.url?scp=84959387069&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.93.024318

DO - 10.1103/PhysRevC.93.024318

M3 - Article

AN - SCOPUS:84959387069

SN - 0556-2813

VL - 93

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024318

ER -

Mirrored one-nucleon knockout reactions to the Tz=± 32 A=53 mirror nuclei

Abstract

Bibliographical note

Access to Document

Other files and links

Cite this