Dawning of the N=32 shell closure seen through precision mass measurements of neutron-rich titanium isotopes

E. Leistenschneider; M. P. Reiter; S. Ayet San Andrés; B. Kootte; J. D. Holt; P. Navrátil; C. Babcock; C. Barbieri; B. R. Barquest; J. Bergmann; J. Bollig; T. Brunner; E. Dunling; A. Finlay; H. Geissel; L. Graham; F. Greiner; H. Hergert; C. Hornung; C. Jesch; R. Klawitter; Y. Lan; D. Lascar; K. G. Leach; W. Lippert; J. E. McKay; S. F. Paul; A. Schwenk; D. Short; J. Simonis; V. Somà; R. Steinbrügge; S. R. Stroberg; R. Thompson; M. E. Wieser; C. Will; M. Yavor; C. Andreoiu; T. Dickel; I. Dillmann; G. Gwinner; W. R. Plaß; C. Scheidenberger; A. A. Kwiatkowski; J. Dilling

doi:10.1103/PhysRevLett.120.062503

Dawning of the N=32 shell closure seen through precision mass measurements of neutron-rich titanium isotopes

E. Leistenschneider, M. P. Reiter, S. Ayet San Andrés, B. Kootte, J. D. Holt, P. Navrátil, C. Babcock, C. Barbieri, B. R. Barquest, J. Bergmann, J. Bollig, T. Brunner, E. Dunling, A. Finlay, H. Geissel, L. Graham, F. Greiner, H. Hergert, C. Hornung, C. JeschR. Klawitter, Y. Lan, D. Lascar, K. G. Leach, W. Lippert, J. E. McKay, S. F. Paul, A. Schwenk, D. Short, J. Simonis, V. Somà, R. Steinbrügge, S. R. Stroberg, R. Thompson, M. E. Wieser, C. Will, M. Yavor, C. Andreoiu, T. Dickel, I. Dillmann, G. Gwinner, W. R. Plaß, C. Scheidenberger, A. A. Kwiatkowski, J. Dilling

School of Physics and Astronomy

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

Abstract

A precision mass investigation of the neutron-rich titanium isotopes 51−55Ti was performed at TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN). The range of the measurements covers the N ¼ 32 shell closure, and the overall uncertainties of the 52−55Ti mass values were significantly reduced. Our results
conclusively establish the existence of the weak shell effect at N ¼ 32, narrowing down the abrupt onset of this shell closure. Our data were compared with state-of-the-art ab initio shell model calculations which, despite very successfully describing where the N ¼ 32 shell gap is strong, overpredict its strength and extent in titanium and heavier isotones. These measurements also represent the first scientific results of TITAN using the newly commissioned multiple-reflection time-of-flight mass spectrometer, substantiated
by independent measurements from TITAN’s Penning trap mass spectrometer.

Original language	English
Article number	062503
Journal	Physical Review Letters
Volume	120
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.120.062503
Publication status	Published - 9 Feb 2018

Keywords

nucl-ex
nucl-th

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10.1103/PhysRevLett.120.062503

PhysRevLett.120.062503Final published version, 406 KB

https://arxiv.org/abs/1710.08537

Pascal Reiter
- School of Physics and Astronomy - Lecturer in Nuclear Physics
Person: Academic: Research Active

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Leistenschneider, E., Reiter, M. P., Andrés, S. A. S., Kootte, B., Holt, J. D., Navrátil, P., Babcock, C., Barbieri, C., Barquest, B. R., Bergmann, J., Bollig, J., Brunner, T., Dunling, E., Finlay, A., Geissel, H., Graham, L., Greiner, F., Hergert, H., Hornung, C., ... Dilling, J. (2018). Dawning of the N=32 shell closure seen through precision mass measurements of neutron-rich titanium isotopes. Physical Review Letters, 120(6), [062503]. https://doi.org/10.1103/PhysRevLett.120.062503

@article{bf4a027817fe4f9d957815e0fc9bbb56,

title = "Dawning of the N=32 shell closure seen through precision mass measurements of neutron-rich titanium isotopes",

abstract = " A precision mass investigation of the neutron-rich titanium isotopes 51−55Ti was performed at TRIUMF{\textquoteright}s Ion Trap for Atomic and Nuclear science (TITAN). The range of the measurements covers the N ¼ 32 shell closure, and the overall uncertainties of the 52−55Ti mass values were significantly reduced. Our resultsconclusively establish the existence of the weak shell effect at N ¼ 32, narrowing down the abrupt onset of this shell closure. Our data were compared with state-of-the-art ab initio shell model calculations which, despite very successfully describing where the N ¼ 32 shell gap is strong, overpredict its strength and extent in titanium and heavier isotones. These measurements also represent the first scientific results of TITAN using the newly commissioned multiple-reflection time-of-flight mass spectrometer, substantiatedby independent measurements from TITAN{\textquoteright}s Penning trap mass spectrometer.",

keywords = "nucl-ex, nucl-th",

author = "E. Leistenschneider and Reiter, {M. P.} and Andr{\'e}s, {S. Ayet San} and B. Kootte and Holt, {J. D.} and P. Navr{\'a}til and C. Babcock and C. Barbieri and Barquest, {B. R.} and J. Bergmann and J. Bollig and T. Brunner and E. Dunling and A. Finlay and H. Geissel and L. Graham and F. Greiner and H. Hergert and C. Hornung and C. Jesch and R. Klawitter and Y. Lan and D. Lascar and Leach, {K. G.} and W. Lippert and McKay, {J. E.} and Paul, {S. F.} and A. Schwenk and D. Short and J. Simonis and V. Som{\`a} and R. Steinbr{\"u}gge and Stroberg, {S. R.} and R. Thompson and Wieser, {M. E.} and C. Will and M. Yavor and C. Andreoiu and T. Dickel and I. Dillmann and G. Gwinner and Pla{\ss}, {W. R.} and C. Scheidenberger and Kwiatkowski, {A. A.} and J. Dilling",

year = "2018",

month = feb,

day = "9",

doi = "10.1103/PhysRevLett.120.062503",

language = "English",

volume = "120",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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Leistenschneider, E, Reiter, MP, Andrés, SAS, Kootte, B, Holt, JD, Navrátil, P, Babcock, C, Barbieri, C, Barquest, BR, Bergmann, J, Bollig, J, Brunner, T, Dunling, E, Finlay, A, Geissel, H, Graham, L, Greiner, F, Hergert, H, Hornung, C, Jesch, C, Klawitter, R, Lan, Y, Lascar, D, Leach, KG, Lippert, W, McKay, JE, Paul, SF, Schwenk, A, Short, D, Simonis, J, Somà, V, Steinbrügge, R, Stroberg, SR, Thompson, R, Wieser, ME, Will, C, Yavor, M, Andreoiu, C, Dickel, T, Dillmann, I, Gwinner, G, Plaß, WR, Scheidenberger, C, Kwiatkowski, AA & Dilling, J 2018, 'Dawning of the N=32 shell closure seen through precision mass measurements of neutron-rich titanium isotopes', Physical Review Letters, vol. 120, no. 6, 062503. https://doi.org/10.1103/PhysRevLett.120.062503

TY - JOUR

T1 - Dawning of the N=32 shell closure seen through precision mass measurements of neutron-rich titanium isotopes

AU - Leistenschneider, E.

AU - Reiter, M. P.

AU - Andrés, S. Ayet San

AU - Kootte, B.

AU - Holt, J. D.

AU - Navrátil, P.

AU - Babcock, C.

AU - Barbieri, C.

AU - Barquest, B. R.

AU - Bergmann, J.

AU - Bollig, J.

AU - Brunner, T.

AU - Dunling, E.

AU - Finlay, A.

AU - Geissel, H.

AU - Graham, L.

AU - Greiner, F.

AU - Hergert, H.

AU - Hornung, C.

AU - Jesch, C.

AU - Klawitter, R.

AU - Lan, Y.

AU - Lascar, D.

AU - Leach, K. G.

AU - Lippert, W.

AU - McKay, J. E.

AU - Paul, S. F.

AU - Schwenk, A.

AU - Short, D.

AU - Simonis, J.

AU - Somà, V.

AU - Steinbrügge, R.

AU - Stroberg, S. R.

AU - Thompson, R.

AU - Wieser, M. E.

AU - Will, C.

AU - Yavor, M.

AU - Andreoiu, C.

AU - Dickel, T.

AU - Dillmann, I.

AU - Gwinner, G.

AU - Plaß, W. R.

AU - Scheidenberger, C.

AU - Kwiatkowski, A. A.

AU - Dilling, J.

PY - 2018/2/9

Y1 - 2018/2/9

N2 - A precision mass investigation of the neutron-rich titanium isotopes 51−55Ti was performed at TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN). The range of the measurements covers the N ¼ 32 shell closure, and the overall uncertainties of the 52−55Ti mass values were significantly reduced. Our resultsconclusively establish the existence of the weak shell effect at N ¼ 32, narrowing down the abrupt onset of this shell closure. Our data were compared with state-of-the-art ab initio shell model calculations which, despite very successfully describing where the N ¼ 32 shell gap is strong, overpredict its strength and extent in titanium and heavier isotones. These measurements also represent the first scientific results of TITAN using the newly commissioned multiple-reflection time-of-flight mass spectrometer, substantiatedby independent measurements from TITAN’s Penning trap mass spectrometer.

AB - A precision mass investigation of the neutron-rich titanium isotopes 51−55Ti was performed at TRIUMF’s Ion Trap for Atomic and Nuclear science (TITAN). The range of the measurements covers the N ¼ 32 shell closure, and the overall uncertainties of the 52−55Ti mass values were significantly reduced. Our resultsconclusively establish the existence of the weak shell effect at N ¼ 32, narrowing down the abrupt onset of this shell closure. Our data were compared with state-of-the-art ab initio shell model calculations which, despite very successfully describing where the N ¼ 32 shell gap is strong, overpredict its strength and extent in titanium and heavier isotones. These measurements also represent the first scientific results of TITAN using the newly commissioned multiple-reflection time-of-flight mass spectrometer, substantiatedby independent measurements from TITAN’s Penning trap mass spectrometer.

KW - nucl-ex

KW - nucl-th

U2 - 10.1103/PhysRevLett.120.062503

DO - 10.1103/PhysRevLett.120.062503

M3 - Letter

VL - 120

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 6

M1 - 062503

ER -

Dawning of the N=32 shell closure seen through precision mass measurements of neutron-rich titanium isotopes

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