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Title: First observation of γ -soft and triaxial bands in Zr isotopes

Abstract

New results obtained in this work from measurements of γ radiation following fission of 248Cm and 252Cf, performed using Eurogam2 and Gammasphere arrays, respectively, reveal excitations corresponding to γ vibrations and triaxial deformation present in 100Zr and 102Zr nuclei. This is the first observation of nonaxial bands in Zr isotopes. Such excitations probably occur due to competing prolate and oblate configurations, identified recently in these nuclei. Evolution of γ softness and triaxiality in Zr isotopes is observed in the function of the neutron number.

Authors:
 [1];  [1];  [1];  [2];  [2];  [3]
  1. Univ. of Warsaw, Warsaw (Poland)
  2. Univ. of Manchester, Manchester (United Kingdom)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1558099
Alternate Identifier(s):
OSTI ID: 1545453
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 100; Journal Issue: 1; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Urban, W., Rząca-Urban, T., Wiśniewski, J., Smith, A. G., Simpson, G. S., and Ahmad, I. First observation of γ -soft and triaxial bands in Zr isotopes. United States: N. p., 2019. Web. doi:10.1103/PhysRevC.100.014319.
Urban, W., Rząca-Urban, T., Wiśniewski, J., Smith, A. G., Simpson, G. S., & Ahmad, I. First observation of γ -soft and triaxial bands in Zr isotopes. United States. doi:10.1103/PhysRevC.100.014319.
Urban, W., Rząca-Urban, T., Wiśniewski, J., Smith, A. G., Simpson, G. S., and Ahmad, I. Fri . "First observation of γ -soft and triaxial bands in Zr isotopes". United States. doi:10.1103/PhysRevC.100.014319.
@article{osti_1558099,
title = {First observation of γ -soft and triaxial bands in Zr isotopes},
author = {Urban, W. and Rząca-Urban, T. and Wiśniewski, J. and Smith, A. G. and Simpson, G. S. and Ahmad, I.},
abstractNote = {New results obtained in this work from measurements of γ radiation following fission of 248Cm and 252Cf, performed using Eurogam2 and Gammasphere arrays, respectively, reveal excitations corresponding to γ vibrations and triaxial deformation present in 100Zr and 102Zr nuclei. This is the first observation of nonaxial bands in Zr isotopes. Such excitations probably occur due to competing prolate and oblate configurations, identified recently in these nuclei. Evolution of γ softness and triaxiality in Zr isotopes is observed in the function of the neutron number.},
doi = {10.1103/PhysRevC.100.014319},
journal = {Physical Review C},
number = 1,
volume = 100,
place = {United States},
year = {2019},
month = {7}
}

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Works referenced in this record:

Harmonic Two-Phonon γ-Vibrational State in Neutron-Rich 106 Mo
journal, September 1995


Identification of high spin states in Zr 100
journal, July 2006


Triaxiality and the aligned h 11 2 neutron orbitals in neutron-rich Zr and Mo isotopes
journal, January 2004


Spins and parities of levels in fission fragments
journal, December 1998

  • Jones, M. A.; Urban, W.; Phillips, W. R.
  • Review of Scientific Instruments, Vol. 69, Issue 12
  • DOI: 10.1063/1.1149257

Study of spontaneous fission with EUROGAM: Shape transition in A~100 Sr and Zr nuclei
journal, February 1997

  • Urban, W.; Durell, J. L.; Phillips, W. R.
  • Zeitschrift für Physik A Hadrons and Nuclei, Vol. 358, Issue 2
  • DOI: 10.1007/s002180050291

Shell model description of zirconium isotopes
journal, June 2009


Signatures of γ softness or triaxiality in low energy nuclear spectra
journal, May 1991


The role of triaxiality in the ground states of even-even neutron-rich Ru isotopes
journal, September 1994


Half-life of the 830.2 keV isomer in Sr 97
journal, December 2005


Lifetimes and shape-coexisting states of Zr 99
journal, July 2019


Characterization of the β vibration and 0 + 2 states in deformed nuclei
journal, December 2000


Identification of ν 9 / 2 [ 404 ] band in 97 Sr
journal, May 2003


A new technique for measuring g factors of excited states in fission fragments using large arrays of Ge detectors
journal, March 2002

  • Patel, D.; Smith, A. G.; Simpson, G. S.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 28, Issue 4
  • DOI: 10.1088/0954-3899/28/4/306

Nuclear Data Sheets for A = 102
journal, August 2009


“Stiff” deformed nuclei, configuration dependent pairing and the $\beta$ β and $\gamma$ γ degrees of freedom
journal, February 2019

  • Sharpey-Schafer, J. F.; Bark, R. A.; Bvumbi, S. P.
  • The European Physical Journal A, Vol. 55, Issue 2
  • DOI: 10.1140/epja/i2019-12665-x

Shape evolution of Zr nuclei and roles of the tensor force
journal, December 2018


Spin-Dependent Triaxial Deformation in Neutron-Rich Mo Isotopes
journal, August 1996


Pairing strength in neutron-rich isotopes of Zr
journal, November 1995


Experimental Information Concerning Deformation of Neutron Rich Nuclei in the A 100 Region
journal, July 1970


First observation of the ν9/2[404] orbital in the A ∼ 100 mass region
journal, January 2003


Shape coexistence in atomic nuclei
journal, November 2011


Nuclear Data Sheets for A = 100
journal, February 2008


Large Arrays of Escape-Suppressed Gamma-Ray Detectors
journal, December 1994


Robust Regularity in γ -Soft Nuclei and Its Microscopic Realization
journal, March 2012


Gamma rays from fission fragments
journal, November 1995


K selection in the decay of the ( ν 5 2 [ 532 ] 3 2 [ 411 ] ) 4 isomeric state in Zr 102
journal, August 2017


Evidence for coexistence of reflection asymmetric and symmetric shapes in 150Sm
journal, February 1987


The GAMMASPHERE
journal, December 1990


Identification of new collective bands in neutron-rich Zr 102
journal, October 2008


The ν9/2[404] orbital and the deformation in the A ∼ 100 region
journal, November 2004


Staggering in γ-band energies and the transition between different structural symmetries in nuclei
journal, August 2007


Structure of 0 + excitations in the mass A 100 region: 0 2 + bands in Sr 98 and Zr 100
journal, June 2019


New excitations in Ba 142 and Ce 144 : Evolution of γ bands in the N = 86 isotones
journal, June 2017


Intertwined quantum phase transitions in the Zr isotopes
journal, June 2019


Shape coexistence in the odd-odd nucleus Y 98 : The role of the g 9 / 2 neutron extruder
journal, October 2017