Triaxiality and exotic rotations at high spins in $^{134}\mathrm{Ce}$

Triaxiality and exotic rotations at high spins in ${}^{134}{Ce}$

C. M. Petrache, S. Guo, A. D. Ayangeakaa, U. Garg, J. T. Matta, B. K. Nayak, D. Patel, M. P. Carpenter, C. J. Chiara, R. V. F. Janssens, F. G. Kondev, T. Lauritsen, D. Seweryniak, S. Zhu, S. S. Ghugre, and R. Palit

Phys. Rev. C 93, 064305 – Published 6 June 2016

Abstract

High-spin states in ${}^{134}{Ce}$ have been investigated using the ${}^{116}{Cd} ({}^{22}{Ne}, 4 n)$ reaction and the Gammasphere array. The level scheme has been extended to an excitation energy of $\sim 30$ MeV and spin $\sim 54 ℏ$ . Two new dipole bands and four new sequences of quadrupole transitions were identified. Several new transitions have been added to a number of known bands. One of the strongly populated dipole bands was revised and placed differently in the level scheme, resolving a discrepancy between experiment and model calculations reported previously. Configurations are assigned to the observed bands based on cranked Nilsson-Strutinsky calculations. A coherent understanding of the various excitations, both at low and high spins, is thus obtained, supporting an interpretation in terms of coexistence of stable triaxial, highly deformed, and superdeformed shapes up to very high spins. Rotations around different axes of the triaxial nucleus, and sudden changes of the rotation axis in specific configurations, are identified, further elucidating the nature of high-spin collective excitations in the $A = 130$ mass region.

4 More

Received 11 April 2016

DOI:https://doi.org/10.1103/PhysRevC.93.064305

Physics Subject Headings (PhySH)

Collective levels Electromagnetic transitions Energy levels Low & intermediate energy heavy-ion reactions Plasma fusion

90 ≤ A ≤ 149

Nuclear data analysis & compilation

Nuclear Physics

Authors & Affiliations

C. M. Petrache¹, S. Guo^1,*, A. D. Ayangeakaa^2,†, U. Garg², J. T. Matta^2,‡, B. K. Nayak^2,§, D. Patel^2,∥, M. P. Carpenter³, C. J. Chiara^3,4,¶, R. V. F. Janssens³, F. G. Kondev⁵, T. Lauritsen³, D. Seweryniak³, S. Zhu³, S. S. Ghugre⁶, and R. Palit^7,8

¹Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, Bâtiment 104-108, 91405 Orsay, France
²Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA
³Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
⁴Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
⁵Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
⁶UGC-DAE Consortium for Science Research, Kolkata 700 098, India
⁷Tata Institute of Fundamental Research, Mumbai 400 005, India
⁸The Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556, USA

^*On leave from Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
^†Present address: Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
^‡Present address: Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.
^§Present address: Nuclear Physics Division, Bhabha Atomic Research Center (BARC), Mumbai 400085, India.
^∥Present address: M.D. Anderson Cancer Center, Houston, Texas 77030, USA.
^¶Present address: US Army Research Laboratory, Adelphi, Maryland 20783, USA.

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 93, Iss. 6 — June 2016

Reuse & Permissions

Access Options

Article Available via CHORUS

Download Accepted Manuscript

Author publication services for translation and copyediting assistance advertisement

Physical Review C

covering nuclear physics

Triaxiality and exotic rotations at high spins in ${}^{134}{Ce}$

C. M. Petrache, S. Guo, A. D. Ayangeakaa, U. Garg, J. T. Matta, B. K. Nayak, D. Patel, M. P. Carpenter, C. J. Chiara, R. V. F. Janssens, F. G. Kondev, T. Lauritsen, D. Seweryniak, S. Zhu, S. S. Ghugre, and R. Palit

Phys. Rev. C 93, 064305 – Published 6 June 2016

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Physical Review C

covering nuclear physics

Triaxiality and exotic rotations at high spins in Ce134

C. M. Petrache, S. Guo, A. D. Ayangeakaa, U. Garg, J. T. Matta, B. K. Nayak, D. Patel, M. P. Carpenter, C. J. Chiara, R. V. F. Janssens, F. G. Kondev, T. Lauritsen, D. Seweryniak, S. Zhu, S. S. Ghugre, and R. Palit

Phys. Rev. C 93, 064305 – Published 6 June 2016

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Triaxiality and exotic rotations at high spins in ${}^{134}{Ce}$