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Majola, S. N. T. and Sithole, M. A. and Mdletshe, L. and Hartley, D. and Tim\’ar, J. and Nyak\’o, B. M. and Allmond, J. M. and Bark, R. A. and Beausang, C. and Bianco, L. and Bucher, T. D. and Bvumbi, S. P. and Carpenter, M. P. and Chiara, C. J. and Cooper, N. and Cullen, D. M. and Curien, D. and Dinoko, T. S. and Gall, B. J. P. and Garrett, P. E. and Greenlees, P. T. and Hirvonen, J. and Jakobsson, U. and Jones, P. M. and Julin, R. and Juutinen, S. and Ketelhut, S. and Kheswa, B. V. and Kondev, F. G. and Korichi, A. and Kulp, W. D. and Lauritsen, T. and Lawrie, E. A. and Makhathini, L. and Masiteng, P. L. and Maqabuka, B. and McCutchan, E. A. and Miller, D. and Miller, S. and Minkova, A. and Msebi, L. and Mthembu, S. H. and Ndayishimye, J. and Nieminen, P. and Ngcobo, P. Z. and Ntshangase, S. S. and Orce, J. N. and Peura, P. and Rahkila, P. and Redon, N. and Riedinger, L. L. and Riley, M. A. and Roux, D. G. and Ruotsalainen, P. and Piot, J. and Saren, J. and Sharpey-Schafer, J. F. and Scholey, C. and Shirinda, O. and Simpson, J. and Sorri, J. and Stefanescu, I. and Stolze, S. and Uusitalo, J. and Wang, X. and Werner, V. and Wood, J. L. and Yu, C.-H. and Zhu, S. and Zimba, G. (2020) First candidates for γ vibrational bands built on the [505]11/2− neutron orbital in odd-A Dy isotopes, Phys. Rev. C, 101{4}, 044312, https://doi.org/10.1103/PhysRevC.101.044312

First candidates for γ vibrational bands built on the [505]11/2⁻ neutron orbital in odd-A Dy isotopes

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Author: Majola, S. N. T.1,2,3; Sithole, M. A.3,4; Mdletshe, L.2,3;
Organizations: 1Univ Johannesburg, Dept Phys, POB 524, ZA-2006 Auckland Pk, South Africa.
2Univ Zululand, Dept Phys & Engn, ZA-3886 Kwa Dlangezwa, South Africa.
3iThemba Labs, POB 722, ZA-7129 Somerset West, South Africa.
4Univ Western Cape, Dept Phys, P-B X17, ZA-7535 Bellville, South Africa.
5US Naval Acad, Dept Phys, Annapolis, MD 21402 USA.
6MTA Atomki, POB 51, H-4001 Debrecen, Hungary.
7Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
8Univ Richmond, Dept Phys, Richmond, VA 23173 USA.
9Univ Guelph, Dept Phys, Guelph, ON NIG 2WI, Canada.
10Stellenbosch Univ, Dept Phys, P-B X1, ZA-7602 Matieland, South Africa.
11NECSA, Natl Radioact Waste Disposal Inst, Pelendaba, South Africa.
12Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
13Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
14Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA.
15Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland.
16Univ Manchester, Schuster Lab, Manchester M13 9PL, Lancs, England.
17Univ Strasbourg, CNRS, IPHC, UMR 7178, F-67000 Strasbourg, France.
18Natl Metrol Inst South Africa, P-B X34, ZA-0040 Pretoria, South Africa.
19CSNSM IN2P3 CNRS, Orsay Campus, F-91405 Orsay, France.
20Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA.
21Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA.
22Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
23TRIUMF, Vancouver, BC V6T 2A3C, Canada.
24Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
25Univ Sofia, Fac Phys, Sofia 1164, Bulgaria.
26Univ Cape Town, Dept Phys, P-B X3, ZA-7701 Rondebosch, South Africa.
27Inst Phys Nucl, IN2P3, CNRS, F-69622 Villeurbanne, France.
28Rhodes Univ, Dept Phys, POB 94, ZA-6140 Grahamstown, South Africa.
29STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
30Univ Oulu, Sodankyla Geophys Observ, Tahtelantie 62, FI-99600 Sodankyla, Finland.
31Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
32Tech Univ Darmstadt, Inst Kernphys, Schlossgartenstr 9, D-64289 Darmstadt, Germany.
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.8 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2020070947185
Language: English
Published: American Physical Society, 2020
Publish Date: 2020-07-09
Description:

Abstract

Rotational structures have been measured using the Jurogam II and GAMMASPHERE arrays at low spin following the ¹⁵⁵Gd(α,2n)¹⁵⁷Dy and ¹⁴⁸Nd(¹²C,5n)¹⁵⁵Dy reactions at 25 and 65 MeV, respectively. We report high-K bands, which are conjectured to be the first candidates of a Kπ=2⁺γ vibrational band, built on the [505]11/2⁻ neutron orbital, in both odd-A155,157Dy isotopes. The coupling of the first excited K=0⁺ states or the so-called β vibrational bands at 661 and 676 keV in ¹⁵⁴Dy and ¹⁵⁶Dy to the [505]11/2− orbital, to produce a Kπ=11/2⁻ band, was not observed in both ¹⁵⁵Dy and ¹⁵⁷Dy, respectively. The implication of these findings on the interpretation of the first excited 0⁺ states in the core nuclei ¹⁵⁴Dy and ¹⁵⁶Dy are also discussed.

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Series: Physical review. C
ISSN: 2469-9985
ISSN-E: 2469-9993
ISSN-L: 2469-9985
Volume: 101
Issue: 4
Article number: 044312
DOI: 10.1103/PhysRevC.101.044312
OADOI: https://oadoi.org/10.1103/PhysRevC.101.044312
Type of Publication: A1 Journal article – refereed
Field of Science: 115 Astronomy and space science
Subjects:
Article
Funding: This work is supported by the South African National Research Foundation under Grants No. 96829, No. 109711, and No. 106012). Support for L.B. and P.E.G. was provided by the Natural Sciences and Engineering Research Council of Canada. V.W. wishes to acknowledge support provided by the German Federal Ministry for education and Research under Grant No. 05P19RDFN1. Support was also provided by the U.S. National Science Foundation under Grants No. PHY-1203100 (USNA), No. PHY-1502092 (USNA), and No. PHY–0754674 (FSU) as well as by the U.S. Department of energy, Office of Nuclear of Nuclear Physics, under Contracts No. DE-AC02-06CH11357 (ANL) and No. DE-FG02-91ER40609 (Yale). The authors also acknowledge the support of GAMMAPOOL for the loan of the JUROGAM detectors. JYFL research is supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2006–2011, Contract No. 213503. This work was also partially supported by the National Research, Development and Innovation Fund of Hungary, financed under the K18 funding scheme with Project No. K128947, as well as by the European Regional Development Fund (Contract No. GINOP–2.3.3–15–2016– 00034).
Copyright information: © 2020 American Physical Society.