Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of 22Mg

J. Henderson; G Hackman; P. Ruotsalainen; S. R. Stroberg; K. D. Launey; J. D. Holt; F. Ali-Rachedi; N. Bernier; M. A. Bentley; M Bowry; R. Caballero-Folch; L. J. Evitts; R. Frederick; A. B. Garnsworthy; P. E. Garrett; B. Jigmeddorj; A. I. Kilic; J. Lassen; J. Measures; D. Muecher; B. Olaizola; E O'Sullivan; O. Paetkau; J. Park; J. Smallcombe; C. E. Svensson; R. Wadsworth; C. Y. Wu

doi:10.1016/j.physletb.2018.05.064

Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of ²²Mg

J. Henderson^*, G Hackman, P. Ruotsalainen, S. R. Stroberg, K. D. Launey, J. D. Holt, F. Ali-Rachedi, N. Bernier, M. A. Bentley, M Bowry, R. Caballero-Folch, L. J. Evitts, R. Frederick, A. B. Garnsworthy, P. E. Garrett, B. Jigmeddorj, A. I. Kilic, J. Lassen, J. Measures, D. MuecherB. Olaizola, E O'Sullivan, O. Paetkau, J. Park, J. Smallcombe, C. E. Svensson, R. Wadsworth, C. Y. Wu

^*Corresponding author for this work

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

Abstract

Many-body nuclear theory utilizing microscopic or chiral potentials has developed to the point that collectivity might be studied within a microscopic or ab initio framework without the use of effective charges; for example with the proper evolution of the E2 operator, or alternatively, through the use of an appropriate and manageable subset of particle–hole excitations. We present a precise determination of E2 strength in ²²Mg and its mirror ²²Ne by Coulomb excitation, allowing for rigorous comparisons with theory. No-core symplectic shell-model calculations were performed and agree with the new B(E2) values while in-medium similarity-renormalization-group calculations consistently underpredict the absolute strength, with the missing strength found to have both isoscalar and isovector components. The discrepancy between two microscopic models demonstrates the sensitivity of E2 strength to the choice of many-body approximation employed.

Original language	English
Pages (from-to)	468-473
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	782
Early online date	31 May 2018
DOIs	https://doi.org/10.1016/j.physletb.2018.05.064
Publication status	Published - 10 Jul 2018

Bibliographical note

© 2018 The Author(s). his 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

Keywords

Mg
Ne
Ab initio
Collectivity
Coulomb excitation

Access to Document

10.1016/j.physletb.2018.05.064

mg22_accepted
© 2018 The Author(s). his 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, 447 KB

Cite this

Henderson, J., Hackman, G., Ruotsalainen, P., Stroberg, S. R., Launey, K. D., Holt, J. D., Ali-Rachedi, F., Bernier, N., Bentley, M. A., Bowry, M., Caballero-Folch, R., Evitts, L. J., Frederick, R., Garnsworthy, A. B., Garrett, P. E., Jigmeddorj, B., Kilic, A. I., Lassen, J., Measures, J., ... Wu, C. Y. (2018). Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of ²²Mg. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 782, 468-473. https://doi.org/10.1016/j.physletb.2018.05.064

@article{6618ae6d7dc643b1b5cda8ad3243a14f,

title = "Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of 22Mg",

abstract = "Many-body nuclear theory utilizing microscopic or chiral potentials has developed to the point that collectivity might be studied within a microscopic or ab initio framework without the use of effective charges; for example with the proper evolution of the E2 operator, or alternatively, through the use of an appropriate and manageable subset of particle–hole excitations. We present a precise determination of E2 strength in 22Mg and its mirror 22Ne by Coulomb excitation, allowing for rigorous comparisons with theory. No-core symplectic shell-model calculations were performed and agree with the new B(E2) values while in-medium similarity-renormalization-group calculations consistently underpredict the absolute strength, with the missing strength found to have both isoscalar and isovector components. The discrepancy between two microscopic models demonstrates the sensitivity of E2 strength to the choice of many-body approximation employed.",

keywords = "Mg, Ne, Ab initio, Collectivity, Coulomb excitation",

author = "J. Henderson and G Hackman and P. Ruotsalainen and Stroberg, {S. R.} and Launey, {K. D.} and Holt, {J. D.} and F. Ali-Rachedi and N. Bernier and Bentley, {M. A.} and M Bowry and R. Caballero-Folch and Evitts, {L. J.} and R. Frederick and Garnsworthy, {A. B.} and Garrett, {P. E.} and B. Jigmeddorj and Kilic, {A. I.} and J. Lassen and J. Measures and D. Muecher and B. Olaizola and E O'Sullivan and O. Paetkau and J. Park and J. Smallcombe and Svensson, {C. E.} and R. Wadsworth and Wu, {C. Y.}",

note = "{\textcopyright} 2018 The Author(s). his 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 = "2018",

month = jul,

day = "10",

doi = "10.1016/j.physletb.2018.05.064",

language = "English",

volume = "782",

pages = "468--473",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

}

Henderson, J, Hackman, G, Ruotsalainen, P, Stroberg, SR, Launey, KD, Holt, JD, Ali-Rachedi, F, Bernier, N, Bentley, MA, Bowry, M, Caballero-Folch, R, Evitts, LJ, Frederick, R, Garnsworthy, AB, Garrett, PE, Jigmeddorj, B, Kilic, AI, Lassen, J, Measures, J, Muecher, D, Olaizola, B, O'Sullivan, E, Paetkau, O, Park, J, Smallcombe, J, Svensson, CE, Wadsworth, R & Wu, CY 2018, 'Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of ²²Mg', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 782, pp. 468-473. https://doi.org/10.1016/j.physletb.2018.05.064

TY - JOUR

T1 - Testing microscopically derived descriptions of nuclear collectivity

T2 - Coulomb excitation of 22Mg

AU - Henderson, J.

AU - Hackman, G

AU - Ruotsalainen, P.

AU - Stroberg, S. R.

AU - Launey, K. D.

AU - Holt, J. D.

AU - Ali-Rachedi, F.

AU - Bernier, N.

AU - Bentley, M. A.

AU - Bowry, M

AU - Caballero-Folch, R.

AU - Evitts, L. J.

AU - Frederick, R.

AU - Garnsworthy, A. B.

AU - Garrett, P. E.

AU - Jigmeddorj, B.

AU - Kilic, A. I.

AU - Lassen, J.

AU - Measures, J.

AU - Muecher, D.

AU - Olaizola, B.

AU - O'Sullivan, E

AU - Paetkau, O.

AU - Park, J.

AU - Smallcombe, J.

AU - Svensson, C. E.

AU - Wadsworth, R.

AU - Wu, C. Y.

N1 - © 2018 The Author(s). his 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 - 2018/7/10

Y1 - 2018/7/10

N2 - Many-body nuclear theory utilizing microscopic or chiral potentials has developed to the point that collectivity might be studied within a microscopic or ab initio framework without the use of effective charges; for example with the proper evolution of the E2 operator, or alternatively, through the use of an appropriate and manageable subset of particle–hole excitations. We present a precise determination of E2 strength in 22Mg and its mirror 22Ne by Coulomb excitation, allowing for rigorous comparisons with theory. No-core symplectic shell-model calculations were performed and agree with the new B(E2) values while in-medium similarity-renormalization-group calculations consistently underpredict the absolute strength, with the missing strength found to have both isoscalar and isovector components. The discrepancy between two microscopic models demonstrates the sensitivity of E2 strength to the choice of many-body approximation employed.

AB - Many-body nuclear theory utilizing microscopic or chiral potentials has developed to the point that collectivity might be studied within a microscopic or ab initio framework without the use of effective charges; for example with the proper evolution of the E2 operator, or alternatively, through the use of an appropriate and manageable subset of particle–hole excitations. We present a precise determination of E2 strength in 22Mg and its mirror 22Ne by Coulomb excitation, allowing for rigorous comparisons with theory. No-core symplectic shell-model calculations were performed and agree with the new B(E2) values while in-medium similarity-renormalization-group calculations consistently underpredict the absolute strength, with the missing strength found to have both isoscalar and isovector components. The discrepancy between two microscopic models demonstrates the sensitivity of E2 strength to the choice of many-body approximation employed.

KW - Mg

KW - Ne

KW - Ab initio

KW - Collectivity

KW - Coulomb excitation

UR - http://www.scopus.com/inward/record.url?scp=85048071512&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2018.05.064

DO - 10.1016/j.physletb.2018.05.064

M3 - Article

AN - SCOPUS:85048071512

SN - 0370-2693

VL - 782

SP - 468

EP - 473

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of ²²Mg

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this

Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of 22Mg

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Projects

Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this

Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of ²²Mg