Sub-shell closure and shape coexistence in the transitional nucleus Zr98

Witt, W.; Werner, V.; Pietralla, N.; Albers, M.; Ayangeakaa, A. D.; Bucher, B.; Carpenter, M. P.; Cline, D.; David, H. M.; Hayes, A.; Hoffman, C.; Janssens, R. V. F.; Kay, B. P.; Kondev, F. G.; Korten, W.; Lauritsen, T.; Möller, O.; Rainovski, G.; Savard, G.; Seweryniak, D.; Smith, J.; Stegmann, R.; Zhu, S.; Wu, C. Y.

doi:10.1103/PhysRevC.98.041302

Title: Sub-shell closure and shape coexistence in the transitional nucleus ${}^{98}{Zr}$

Abstract

In the rapid shape change from spherical to deformed nuclei in the Z=40 Zr isotopic chain, recent work has identified shape coexistence in 96Zr. Between 96Zr and the strongly deformed 100Zr, 98Zr is expected to also exhibit coexistence of nuclear shapes. The degree of mixing between different configurations is mainly determined by the nucleon-nucleon interactions. For nuclear model predictions, experimental constraints are needed, but they are barely available for 98Zr. To study low-lying transitions in 98Zr, a Coulomb excitation experiment was conducted at the Argonne Tandem-Linac Accelerator System (ATLAS) facility using a 98Zr beam extracted from the Californium Rare Ion Breeder Upgrade (CARIBU) ion source and Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) for γ-ray spectroscopy coupled to the compact heavy ion counter (CHICO2) for ion detection. Furthermore, this paper reports on the first decisive deduction of the B(E2;2 + 1→0 + 1) transition strength in 98Zr and on its interpretation.

Authors:

Witt, W. ^[1]; Werner, V. ^[1]; Pietralla, N. ^[1]; Albers, M. ^[2]; Ayangeakaa, A. D. ^[3]; Bucher, B. ^[4]; Carpenter, M. P. ^[2]; Cline, D. ^[5]; David, H. M. ^[6]; Hayes, A. ^[5]; Hoffman, C. ^[2]; Janssens, R. V. F. ^[7]; Kay, B. P. ^[2]; Kondev, F. G. ^[2]; Korten, W. ^[8]; Lauritsen, T. ^[2]; Möller, O. ^[1]; Rainovski, G. ^[9]; Savard, G. ^[2]; Seweryniak, D. ^[2] more »

Technische Univ. Darmstadt, Darmstadt (Germany)
Argonne National Lab. (ANL), Argonne, IL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States); United States Naval Academy, Annapolis, MD (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of Rochester, Rochester, NY (United States)
GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States)
Univ. Paris-Saclay, Gif-sur-Yvette (France)
St. Kliment Ohridski Univ. of Sofia, Sofia (Bulgaria)

Publication Date:: Tue Oct 16 00:00:00 EDT 2018

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); University of North Carolina, Chapel Hill, NC (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); German Federal Ministry of Education and Research (BMBF); German Research Foundation (DFG); USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1478176

Alternate Identifier(s):: OSTI ID: 1478565; OSTI ID: 1484235; OSTI ID: 1659361

Report Number(s):: LLNL-JRNL-744414
Journal ID: ISSN 2469-9985; PRVCAN; 899584

Grant/Contract Number:: AC52-07NA27344; AC02-05CH11231; AC02-06CH11357; FG02-97ER41033; FG02-97ER41041

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 98; Journal Issue: 4; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Electromagnetic transitions; Low & intermediate energy heavy-ion reactions; Nuclear structure & decays; Nucleon distribution; 90 ≤ A ≤ 149; Radioactive beams

Citation Formats


                    Witt, W., Werner, V., Pietralla, N., Albers, M., Ayangeakaa, A. D., Bucher, B., Carpenter, M. P., Cline, D., David, H. M., Hayes, A., Hoffman, C., Janssens, R. V. F., Kay, B. P., Kondev, F. G., Korten, W., Lauritsen, T., Möller, O., Rainovski, G., Savard, G., Seweryniak, D., Smith, J., Stegmann, R., Zhu, S., and Wu, C. Y. Sub-shell closure and shape coexistence in the transitional nucleus Zr98.  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevC.98.041302.

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                    Witt, W., Werner, V., Pietralla, N., Albers, M., Ayangeakaa, A. D., Bucher, B., Carpenter, M. P., Cline, D., David, H. M., Hayes, A., Hoffman, C., Janssens, R. V. F., Kay, B. P., Kondev, F. G., Korten, W., Lauritsen, T., Möller, O., Rainovski, G., Savard, G., Seweryniak, D., Smith, J., Stegmann, R., Zhu, S., & Wu, C. Y. Sub-shell closure and shape coexistence in the transitional nucleus Zr98.  United States.  https://doi.org/10.1103/PhysRevC.98.041302

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                    Witt, W., Werner, V., Pietralla, N., Albers, M., Ayangeakaa, A. D., Bucher, B., Carpenter, M. P., Cline, D., David, H. M., Hayes, A., Hoffman, C., Janssens, R. V. F., Kay, B. P., Kondev, F. G., Korten, W., Lauritsen, T., Möller, O., Rainovski, G., Savard, G., Seweryniak, D., Smith, J., Stegmann, R., Zhu, S., and Wu, C. Y. Tue .  
"Sub-shell closure and shape coexistence in the transitional nucleus Zr98".  United States.  https://doi.org/10.1103/PhysRevC.98.041302.  https://www.osti.gov/servlets/purl/1478176.

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@article{osti_1478176,

  title        = {Sub-shell closure and shape coexistence in the transitional nucleus Zr98},

  author       = {Witt, W. and Werner, V. and Pietralla, N. and Albers, M. and Ayangeakaa, A. D. and Bucher, B. and Carpenter, M. P. and Cline, D. and David, H. M. and Hayes, A. and Hoffman, C. and Janssens, R. V. F. and Kay, B. P. and Kondev, F. G. and Korten, W. and Lauritsen, T. and Möller, O. and Rainovski, G. and Savard, G. and Seweryniak, D. and Smith, J. and Stegmann, R. and Zhu, S. and Wu, C. Y.},

  abstractNote = {In the rapid shape change from spherical to deformed nuclei in the Z=40 Zr isotopic chain, recent work has identified shape coexistence in 96Zr. Between 96Zr and the strongly deformed 100Zr, 98Zr is expected to also exhibit coexistence of nuclear shapes. The degree of mixing between different configurations is mainly determined by the nucleon-nucleon interactions. For nuclear model predictions, experimental constraints are needed, but they are barely available for 98Zr. To study low-lying transitions in 98Zr, a Coulomb excitation experiment was conducted at the Argonne Tandem-Linac Accelerator System (ATLAS) facility using a 98Zr beam extracted from the Californium Rare Ion Breeder Upgrade (CARIBU) ion source and Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) for γ-ray spectroscopy coupled to the compact heavy ion counter (CHICO2) for ion detection. Furthermore, this paper reports on the first decisive deduction of the B(E2;2 + 1→0 + 1) transition strength in 98Zr and on its interpretation.},

  doi          = {10.1103/PhysRevC.98.041302},

  journal      = {Physical Review C},

  number       = 4,

  volume       = 98,

  place        = {United States},

  year         = {Tue Oct 16 00:00:00 EDT 2018},

  month        = {Tue Oct 16 00:00:00 EDT 2018}

}

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https://doi.org/10.1103/PhysRevC.98.041302

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Cited by: 25 works

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Figures / Tables:

FIG. 1: Systematics of observables in the Zr isotopic chain: a) Development of the low-lying level energies, b) energy differences of 2⁺ and 0⁺ states and c) R_4/2 (blue, left-hand scale) and B(E2) (red, right-hand scale) values of the ground states indicating a shape transition. Only a lower limit wasmore »

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Works referencing / citing this record:

Data on the structural coexistence in the 96Zr nucleus
journal, May 2019

Witt, W.; Pietralla, N.; Werner, V.
The European Physical Journal A, Vol. 55, Issue 5
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Intertwined Quantum Phase Transitions in the Zr Isotopes
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Similar Records

Title: Sub-shell closure and shape coexistence in the transitional nucleus Zr 98

Abstract

Citation Formats

Figures / Tables:

Evidence for a Possible E(5) Symmetry in 134 Ba journal, October 2000

Investigation of low-spin states in Zr 92 with the ( n , n ' γ ) reaction journal, May 2005

Shell model description of zirconium isotopes journal, June 2009

Extension of the N = 40 Island of Inversion towards N = 50 : Spectroscopy of Cr 66 , Fe 70 , 72 journal, November 2015

The CARIBU gas catcher journal, June 2016

Collective Structure in Zr 94 and Subshell Effects in Shape Coexistence journal, January 2013

Shape coexistence and mixing in Zr 96 journal, May 2017

The “intruder” state in odd mass Au and Tl isotopes journal, August 1977

Nuclear Shapes Studied by Coulomb Excitation journal, December 1986

Mutual support of magicities and residual effective interactions near 208Pb journal, May 1983

Structure of the Sr-Zr isotopes near and at the magic N = 50 shell from g -factor and lifetime measurements in 40 88 Zr and 84 , 86 , 38 88 Sr journal, April 2012

Novel Features of Nuclear Forces and Shell Evolution in Exotic Nuclei journal, January 2010

CARIBU: a new facility for the study of neutron-rich isotopes journal, May 2011

New low-energy 0 + state and shape coexistence in Ni 70 journal, December 2015

Shell model description of “mixed-symmetry” states in Mo journal, September 2000

Collapse of the conventional shell-model ordering in the very-neutron-rich isotopes of Na and Mg journal, November 1980

CHICO2, a two-dimensional pixelated parallel-plate avalanche counter journal, April 2016

The Nuclear Science References (NSR) database and Web Retrieval System journal, June 2011

First Measurement of Collectivity of Coexisting Shapes Based on Type II Shell Evolution: The Case of Zr 96 journal, October 2016

Towards a unified microscopic description of nuclear deformation journal, January 1977

Quantum Phase Transition in the Shape of Zr isotopes journal, October 2016

Experimental study of the lifetime and phase transition in neutron-rich Zr 98 , 100 , 102 journal, November 2017

The performance of the Gamma-Ray Energy Tracking In-beam Nuclear Array GRETINA journal, May 2013

The onset of deformation at the N = 20 neutron shell closure far from stability journal, February 1987

A triple point in nuclei journal, December 2002

Deformation crossing near the first-order shape-phase transition in Gd 152 – 156 journal, November 2008

Structural evolution in A ≈ 100 nuclei within the mapped interacting boson model based on the Gogny energy density functional journal, October 2016

Nuclear Data Sheets for A = 98 journal, February 2003

Mass systematics for A =29–44 nuclei: The deformed A ∼32 region journal, March 1990

Shape evolution in Kr, Zr, and Sr isotopic chains in covariant density functional theory journal, December 2017

Dynamic Symmetries at the Critical Point journal, October 2000

ATLAS with CARIBU: A Laboratory Portrait journal, January 2016

Novel features of nuclear forces and shell evolution in exotic nuclei text, January 2009

The Nuclear Science References (NSR) Database and Web Retrieval System text, January 2011

Quantum Phase Transition in the Shape of Zr isotopes text, January 2016

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Title: Sub-shell closure and shape coexistence in the transitional nucleus ${}^{98}{Zr}$

Evidence for a Possible E(5) Symmetry in $^{134} Ba$
journal, October 2000

Investigation of low-spin states in ${}^{92}{Zr}$ with the ( $n, n^{'} γ$ ) reaction
journal, May 2005

Shell model description of zirconium isotopes
journal, June 2009

Extension of the $N = 40$ Island of Inversion towards $N = 50$ : Spectroscopy of ${}^{66}{Cr}$ , ${}^{70, 72}{Fe}$
journal, November 2015

The CARIBU gas catcher
journal, June 2016

Collective Structure in ${}^{94}{Zr}$ and Subshell Effects in Shape Coexistence
journal, January 2013

Shape coexistence and mixing in ${}^{96}{Zr}$
journal, May 2017

The “intruder” state in odd mass Au and Tl isotopes
journal, August 1977

Nuclear Shapes Studied by Coulomb Excitation
journal, December 1986

Mutual support of magicities and residual effective interactions near 208Pb
journal, May 1983

Structure of the Sr-Zr isotopes near and at the magic $N = 50$ shell from $g$ -factor and lifetime measurements in $_{40}^{88}$ Zr and $^{84, 86,}$ $_{38}^{88}$ Sr
journal, April 2012

Novel Features of Nuclear Forces and Shell Evolution in Exotic Nuclei
journal, January 2010

CARIBU: a new facility for the study of neutron-rich isotopes
journal, May 2011

New low-energy $0^{+}$ state and shape coexistence in ${}^{70}{Ni}$
journal, December 2015

Shell model description of “mixed-symmetry” states in Mo
journal, September 2000

Collapse of the conventional shell-model ordering in the very-neutron-rich isotopes of Na and Mg
journal, November 1980

CHICO2, a two-dimensional pixelated parallel-plate avalanche counter
journal, April 2016

The Nuclear Science References (NSR) database and Web Retrieval System
journal, June 2011

First Measurement of Collectivity of Coexisting Shapes Based on Type II Shell Evolution: The Case of ${}^{96}{Zr}$
journal, October 2016

Towards a unified microscopic description of nuclear deformation
journal, January 1977

Quantum Phase Transition in the Shape of Zr isotopes
journal, October 2016

Experimental study of the lifetime and phase transition in neutron-rich ${}^{98, 100, 102}{Zr}$
journal, November 2017

The performance of the Gamma-Ray Energy Tracking In-beam Nuclear Array GRETINA
journal, May 2013

The onset of deformation at the N = 20 neutron shell closure far from stability
journal, February 1987

A triple point in nuclei
journal, December 2002

Deformation crossing near the first-order shape-phase transition in ${}^{152 - 156}{Gd}$
journal, November 2008

Structural evolution in $A \approx 100$ nuclei within the mapped interacting boson model based on the Gogny energy density functional
journal, October 2016

Nuclear Data Sheets for A = 98
journal, February 2003

Mass systematics for A =29–44 nuclei: The deformed A ∼32 region
journal, March 1990

Shape evolution in Kr, Zr, and Sr isotopic chains in covariant density functional theory
journal, December 2017

Dynamic Symmetries at the Critical Point
journal, October 2000

ATLAS with CARIBU: A Laboratory Portrait
journal, January 2016

Novel features of nuclear forces and shell evolution in exotic nuclei
text, January 2009

The Nuclear Science References (NSR) Database and Web Retrieval System
text, January 2011

Quantum Phase Transition in the Shape of Zr isotopes
text, January 2016

Data on the structural coexistence in the 96Zr nucleus
journal, May 2019

Intertwined Quantum Phase Transitions in the Zr Isotopes
text, January 2019