Shape coexistence in the odd-odd nucleus Y98 : The role of the g9/2 neutron extruder

Urban, W.; Czerwiński, M.; Kurpeta, J.; Rząca-Urban, T.; Wiśniewski, J.; Materna, T.; Iskra, Ł. W.; Smith, A. G.; Ahmad, I.; Blanc, A.; Faust, H.; Köster, U.; Jentschel, M.; Mutti, P.; Soldner, T.; Simpson, G. S.; Pinston, J. A.; de France, G.; Ur, C. A.; Elomaa, V. -V.; Eronen, T.; Hakala, J.; Jokinen, A.; Kankainen, A.; Moore, I. D.; Rissanen, J.; Saastamoinen, A.; Szerypo, J.; Weber, C.; Äystö, J.

doi:10.1103/PhysRevC.96.044333

Shape coexistence in the odd-odd nucleus ${}^{98}Y$ : The role of the $g_{9 / 2}$ neutron extruder

Journal Article · Sun Oct 01 04:00:00 EDT 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.96.044333· OSTI ID:1422551

Urban, W.; Czerwiński, M.; Kurpeta, J.; Rząca-Urban, T.; Wiśniewski, J.; Materna, T.; Iskra, Ł. W.; Smith, A. G.; Ahmad, I.; Blanc, A.; Faust, H.; Köster, U.; Jentschel, M.; Mutti, P.; Soldner, T.; Simpson, G. S.; Pinston, J. A.; de France, G.; Ur, C. A.; Elomaa, V. -V. more »

Excited states in Y-98, populated in neutron-induced fission of U-235 and in spontaneous fission of Cm-248 and Cf-252, have been studied by means of gamma spectroscopy using the Lohengrin fission-fragment separator at ILL Grenoble and the EXILL, Eurogam2, and Gammasphere Ge arrays. Two new isomers have been found in Y-98: a deformed one with T-1/2 = 180(7) ns and a rotational band on top of it, and a spherical one with T-1/2 = 0.45(15) mu s, analogous to the 8(+) isomer in Y-96, corresponding to the (nu g(7/2), pi g(9/2))(8+) spherical configuration. Using the JYFLTRAP Penning trap, an accurate excitation energy of 465.7(7) keV has been determined for the 2.36-s isomer in Y-98. This result and the studies of excited levels in Zr-98, populated in beta-decay of the isomer, indicate a new spin-parity, I-pi = (7)(+) for the isomer. The high spin and the decay properties of this isomer suggest the presence of the 9/2(+)[ 404] neutron extruder orbital in its structure. This is consistent with the large deformation of the isomer, reported recently. The present work does not provide arguments to support the special role of the nu g(7/2)-pi g(9/2) interaction (the spin-orbit-partner, or SOP, mechanism).

Research Organization:: Argonne National Laboratory (ANL)

Sponsoring Organization:: Polish National Science Centre; USDOE Office of Science - Office of Nuclear Physics

DOE Contract Number:: AC02-06CH11357

OSTI ID:: 1422551

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 4 Vol. 96; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

References (57)

Nuclear Data Sheets for A = 98 Singh, Balraj Nuclear Data Sheets, Vol. 84, Issue 3 https://doi.org/10.1006/ndsh.1998.0016	journal	July 1998
Triple angular correlations of γ rays following spontaneous fission Urban, W.; Jones, M. A.; Pearson, C. J. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 365, Issue 2-3 https://doi.org/10.1016/0168-9002(95)00594-3	journal	November 1995
The shape transition in the neutron-rich yttrium isotopes and isomers Cheal, B.; Gardner, M. D.; Avgoulea, M. Physics Letters B, Vol. 645, Issue 2-3 https://doi.org/10.1016/j.physletb.2006.12.053	journal	February 2007
Quantum Phase Transition in the Shape of Zr isotopes Togashi, Tomoaki; Tsunoda, Yusuke; Otsuka, Takaharu Physical Review Letters, Vol. 117, Issue 17 https://doi.org/10.1103/PhysRevLett.117.172502	journal	October 2016
Octupole correlations in neutron rich, odd- A lanthanum nuclei Urban, W.; Phillips, W. R.; Durell, J. L. Physical Review C, Vol. 54, Issue 2 https://doi.org/10.1103/PhysRevC.54.945	journal	August 1996
Deformation in odd-mass nuclei near A ∼ 100: one- and three-quasiparticle nilsson states in 9939Y60 Meyer, R. A.; Monnand, E.; Pinston, J. A. Nuclear Physics A, Vol. 439, Issue 3 https://doi.org/10.1016/0375-9474(85)90424-5	journal	June 1985
Evaluation of theoretical conversion coefficients using BrIcc Kibédi, T.; Burrows, T. W.; Trzhaskovskaya, M. B. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 589, Issue 2 https://doi.org/10.1016/j.nima.2008.02.051	journal	May 2008
Rotational bands in 101 – 103 Nb and 9 8 , 1 0 0 Y nuclei and identification of yrast bands in 146 La and 149 Pr Hwang, J. K.; Ramayya, A. V.; Gilat, J. Physical Review C, Vol. 58, Issue 6 https://doi.org/10.1103/PhysRevC.58.3252	journal	December 1998
Towards a unified microscopic description of nuclear deformation Federman, P.; Pittel, S. Physics Letters B, Vol. 69, Issue 4 https://doi.org/10.1016/0370-2693(77)90825-5	journal	January 1977
Low-spin structure of Br 51 35 86 and Kr 50 36 86 nuclei: The role of the g 7 / 2 neutron orbital Urban, W.; Sieja, K.; Materna, T. Physical Review C, Vol. 94, Issue 4 https://doi.org/10.1103/PhysRevC.94.044328	journal	October 2016
Study of Intermediate-spin States of $^{98}$Y Ramdhane, M.; Simpson, G. S.; Drouet, F. Acta Physica Polonica B, Vol. 47, Issue 3 https://doi.org/10.5506/APhysPolB.47.911	journal	January 2016
Observation of a full set of coexisting intruder excitations in 98Zr: Evidence for correlated excitations? Meyer, R. A.; Henry, E. A.; Mann, L. G. Physics Letters B, Vol. 177, Issue 3-4 https://doi.org/10.1016/0370-2693(86)90751-3	journal	September 1986
Gamma rays from fission fragments Ahmad, I.; Phillips, W. R. Reports on Progress in Physics, Vol. 58, Issue 11 https://doi.org/10.1088/0034-4885/58/11/002	journal	November 1995
Unified shell-model description of nuclear deformation Federman, P.; Pittel, S. Physical Review C, Vol. 20, Issue 2 https://doi.org/10.1103/PhysRevC.20.820	journal	August 1979
The ν9/2[404] orbital and the deformation in the A ∼ 100 region Urban, W.; Pinston, J. A.; Genevey, J. The European Physical Journal A, Vol. 22, Issue 2 https://doi.org/10.1140/epja/i2004-10037-5	journal	November 2004
First observation of the ν9/2[404] orbital in the A ∼ 100 mass region Urban, W.; Pinston, J. A.; Rzaca-Urban, T. The European Physical Journal A, Vol. 16, Issue 1 https://doi.org/10.1140/epja/i2002-10104-y	journal	January 2003
Shape coexistence in the very neutron-rich odd-odd Rb 96 Pinston, J. A.; Genevey, J.; Orlandi, R. Physical Review C, Vol. 71, Issue 6 https://doi.org/10.1103/PhysRevC.71.064327	journal	June 2005
The NUBASE2016 evaluation of nuclear properties Audi, G.; Kondev, F. G.; Wang, Meng Chinese Physics C, Vol. 41, Issue 3 https://doi.org/10.1088/1674-1137/41/3/030001	journal	March 2017
γ -ray linear polarization measurements and ( g 9 / 2 ) − 3 neutron alignment in 91 Ru Zheng, Y.; de France, G.; Clément, E. Physical Review C, Vol. 87, Issue 4 https://doi.org/10.1103/PhysRevC.87.044328	journal	April 2013
First Measurement of Collectivity of Coexisting Shapes Based on Type II Shell Evolution: The Case of Zr 96 Kremer, C.; Aslanidou, S.; Bassauer, S. Physical Review Letters, Vol. 117, Issue 17 https://doi.org/10.1103/PhysRevLett.117.172503	journal	October 2016
Microscopic aspects of nuclear deformation Werner, T. R.; Dobaczewski, J.; Guidry, M. W. Nuclear Physics A, Vol. 578, Issue 1-2 https://doi.org/10.1016/0375-9474(94)90966-0	journal	October 1994
Search for octupole deformation in neutron-rich Cs nuclei Rza̧ca-Urban, T.; Phillips, W. R.; Durell, J. L. Physics Letters B, Vol. 348, Issue 3-4 https://doi.org/10.1016/0370-2693(95)00146-C	journal	April 1995
Medium-spin structure of 96,97Sr and 98,99Zr nuclei and the onset of deformation in the region Urban, W.; Durell, J. L.; Smith, A. G. Nuclear Physics A, Vol. 689, Issue 3-4 https://doi.org/10.1016/S0375-9474(00)00612-6	journal	July 2001
The 1995 update to the atomic mass evaluation Audi, G.; Wapstra, A. H. Nuclear Physics A, Vol. 595, Issue 4 https://doi.org/10.1016/0375-9474(95)00445-9	journal	December 1995
Evolution of deformation in the neutron-rich Zr region from excited intruder state to the ground state Lhersonneau, G.; Pfeiffer, B.; Kratz, K.-L. Physical Review C, Vol. 49, Issue 3, p. 1379-1390 https://doi.org/10.1103/PhysRevC.49.1379	journal	March 1994
From direct to absolute mass measurements: A study of the accuracy of ISOLTRAP Kellerbauer, A.; Blaum, K.; Bollen, G. The European Physical Journal D - Atomic, Molecular and Optical Physics, Vol. 22, Issue 1 https://doi.org/10.1140/epjd/e2002-00222-0	journal	January 2003
Yrast Structure Above the 9.6 s $8^+$ Isomer in $^{96}$Y Isotope Iskra, Ł. W.; Bocchi, G.; Fornal, B. Acta Physica Polonica B, Vol. 48, Issue 3 https://doi.org/10.5506/APhysPolB.48.581	journal	January 2017
Equilibrium shapes and high-spin properties of the neutron-rich A ≈ 100 nuclei Skalski, J.; Mizutori, S.; Nazarewicz, W. Nuclear Physics A, Vol. 617, Issue 3 https://doi.org/10.1016/S0375-9474(97)00125-5	journal	May 1997
Calculation of shell model energies for states in 210 Bi Alexa, Petr; Kvasil, Jan; Minh, Nguyen Viet Physical Review C, Vol. 55, Issue 1 https://doi.org/10.1103/PhysRevC.55.179	journal	January 1997
Shape coexistence in the odd-odd neutron-rich nucleus Y 98 studied in the interacting boson model Brant, S.; Lhersonneau, G.; Sistemich, K. Physical Review C, Vol. 69, Issue 3 https://doi.org/10.1103/PhysRevC.69.034327	journal	March 2004
Large Arrays of Escape-Suppressed Gamma-Ray Detectors Nolan, P. J.; Beck, F. A.; Fossan, D. B. Annual Review of Nuclear and Particle Science, Vol. 44, Issue 1 https://doi.org/10.1146/annurev.ns.44.120194.003021	journal	December 1994
Nuclear spin determination of ^100mY by collinear laser spectroscopy of optically pumped ions Baczynska, K.; Billowes, J.; Campbell, P. Journal of Physics G: Nuclear and Particle Physics, Vol. 37, Issue 10, Article No. 105103 https://doi.org/10.1088/0954-3899/37/10/105103	journal	July 2010
Spectroscopy of neutron rich nuclei using cold neutron induced fission of actinide targets at the ILL: The EXILL campaign Blanc, A.; de France, G.; Drouet, F. EPJ Web of Conferences, Vol. 62 https://doi.org/10.1051/epjconf/20136201001	journal	January 2013
Identification of ν 9 / 2 [ 404 ] band in 97 Sr Hwang, J. K.; Ramayya, A. V.; Hamilton, J. H. Physical Review C, Vol. 67, Issue 5 https://doi.org/10.1103/PhysRevC.67.054304	journal	May 2003
Calibration of the new composite “clover” detector as a Compton polarimeter for the EUROGAM array Jones, P. M.; Wei, L.; Beck, F. A. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 362, Issue 2-3 https://doi.org/10.1016/0168-9002(95)00246-4	journal	August 1995
Half-life of the 830.2 keV isomer in Sr 97 Złomaniec, A.; Faust, H.; Genevey, J. Physical Review C, Vol. 72, Issue 6 https://doi.org/10.1103/PhysRevC.72.067302	journal	December 2005
Precision mass measurements of neutron-rich yttrium and niobium isotopes Hager, U.; Jokinen, A.; Elomaa, V. -V. Nuclear Physics A, Vol. 793, Issue 1-4 https://doi.org/10.1016/j.nuclphysa.2007.06.011	journal	September 2007
Gamma-gamma angular correlation measurements of transitions in98Sr and98Zr and confirmation of shape coexistence in98Sr Becker, K.; Jung, G.; Kobras, K. -H. Zeitschrift f�r Physik A Atoms and Nuclei, Vol. 319, Issue 2 https://doi.org/10.1007/BF01415633	journal	June 1984
Nuclear Data Sheets for A = 98 Müller, H. -W. Nuclear Data Sheets, Vol. 39, Issue 3 https://doi.org/10.1016/S0090-3752(83)80014-3	journal	July 1983
JYFLTRAP: a Penning trap for precision mass spectroscopy and isobaric purification Eronen, T.; Kolhinen, V. S.; Elomaa, V. -V. The European Physical Journal A, Vol. 48, Issue 4 https://doi.org/10.1140/epja/i2012-12046-1	journal	April 2012
Nuclear Data Sheets for A = 96 Abriola, D.; Sonzogni, A. A. Nuclear Data Sheets, Vol. 109, Issue 11 https://doi.org/10.1016/j.nds.2008.10.002	journal	November 2008
Directional correlations of gamma radiations emitted from nuclear states oriented by nuclear reactions or cryogenic methods Krane, K. S.; Steffen, R. M.; Wheeler, R. M. Atomic Data and Nuclear Data Tables, Vol. 11, Issue 5 https://doi.org/10.1016/S0092-640X(73)80016-6	journal	April 1973
Preparing isomerically pure beams of short-lived nuclei at JYFLTRAP Eronen, T.; Elomaa, V. -V.; Hager, U. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 266, Issue 19-20 https://doi.org/10.1016/j.nimb.2008.05.076	journal	October 2008
Nuclear Data Sheets for A = 134 Sonzogni, A. A. Nuclear Data Sheets, Vol. 103, Issue 1 https://doi.org/10.1016/j.nds.2004.11.001	journal	September 2004
Observations of “pairing-free” Kπ = 1+ rotational bands in deformed odd-odd A ∼ 100 nuclei Peker, L. K.; Wohn, F. K.; Hill, John C. Physics Letters B, Vol. 169, Issue 4 https://doi.org/10.1016/0370-2693(86)90365-5	journal	April 1986
Hartree-Fock-Bogolyubov study of deformation in the ZrMo region Federman, P.; Pittel, S. Physics Letters B, Vol. 77, Issue 1 https://doi.org/10.1016/0370-2693(78)90192-2	journal	July 1978
Absolute gamma intensities in the A = 98 transitional nuclei and shape coexistence in Y 98 Mach, H.; Gill, R. L. Physical Review C, Vol. 36, Issue 6 https://doi.org/10.1103/PhysRevC.36.2721	journal	December 1987
Two-quasiparticle bands in neutron-rich nuclei Durell, J. L.; Armstrong, T. J.; Urban, W. The European Physical Journal A, Vol. 20, Issue 1 https://doi.org/10.1140/epja/i2002-10330-3	journal	April 2003
Microscopic study of the shape transition in the zirconium isotopes Federman, P.; Pittel, S.; Campos, R. Physics Letters B, Vol. 82, Issue 1 https://doi.org/10.1016/0370-2693(79)90412-X	journal	March 1979
The Nubase evaluation of nuclear and decay properties Audi, G.; Bersillon, O.; Blachot, J. Nuclear Physics A, Vol. 729, Issue 1 https://doi.org/10.1016/j.nuclphysa.2003.11.001	journal	December 2003
Octupole correlations in neutron-rich, even-even barium isotopes Urban, W.; Jones, M. A.; Durell, J. L. Nuclear Physics A, Vol. 613, Issue 1-2 https://doi.org/10.1016/S0375-9474(96)00393-4	journal	January 1997
New isomers and medium-spin structure of the Y 95 nucleus Urban, W.; Sieja, K.; Simpson, G. S. Physical Review C, Vol. 79, Issue 4 https://doi.org/10.1103/PhysRevC.79.044304	journal	April 2009
The Ramsey method in high-precision mass spectrometry with Penning traps: Experimental results George, S.; Blaum, K.; Herfurth, F. International Journal of Mass Spectrometry, Vol. 264, Issue 2-3 https://doi.org/10.1016/j.ijms.2007.04.003	journal	July 2007
The Ame2012 atomic mass evaluation Wang, M.; Audi, G.; Wapstra, A. H. Chinese Physics C, Vol. 36, Issue 12 https://doi.org/10.1088/1674-1137/36/12/003	journal	December 2012
New isomer in ⁹⁶ Y marking the onset of deformation at N = 57 Iskra, Ł. W.; Fornal, B.; Leoni, S. EPL (Europhysics Letters), Vol. 117, Issue 1 https://doi.org/10.1209/0295-5075/117/12001	journal	January 2017
A new technique for measuring g factors of excited states in fission fragments using large arrays of Ge detectors Patel, D.; Smith, A. G.; Simpson, G. S. Journal of Physics G: Nuclear and Particle Physics, Vol. 28, Issue 4 https://doi.org/10.1088/0954-3899/28/4/306	journal	March 2002
Nuclear Data Sheets for A = 98 Singh, Balraj; Hu, Zhiqiang Nuclear Data Sheets, Vol. 98, Issue 2 https://doi.org/10.1006/ndsh.2003.0003	journal	February 2003

Similar Records

Shape coexistence in the very neutron-rich odd-odd {sup 96}Rb

Journal Article · Wed Jun 01 00:00:00 EDT 2005 · Physical Review. C, Nuclear Physics · OSTI ID:20698755

New yrast and non-yrast states in

{}^{136}I

and medium-spin structure of

{}^{136}I

and

{}^{136}{Xe}

: Roles of the proton

d_{5 / 2}

and the neutron

h_{9 / 2}

orbitals beyond

{}^{132}{Sn}

Journal Article · Wed Aug 01 00:00:00 EDT 2018 · Physical Review C · OSTI ID:1477734

High-spin {mu}s isomer in {sup 98}Zr

Journal Article · Thu Dec 14 23:00:00 EST 2006 · Physical Review. C, Nuclear Physics · OSTI ID:20864196

Shape coexistence in the odd-odd nucleus Y98 : The role of the g9/2 neutron extruder

Citation Formats

References (57)

Similar Records

Related Subjects

Shape coexistence in the odd-odd nucleus ${}^{98}Y$ : The role of the $g_{9 / 2}$ neutron extruder