Confirming band assignments in 167ytterbium with gamma-gamma-electron triple-coincidence spectroscopy

J. Smallcombe; P. J. Davies; C. J. Barton; L. L. Andersson; P. A. Butler; D. M. Cox; T. Grahn; P. T. Greenlees; K. Hauschild; A. Herzan; R. -D. Herzberg; U. Jakobsson; D. G. Jenkins; P. Jones; R. Julin; S. Juutinen; S. Ketelhut; M. Leino; A. Lopez-Martens; A. Mistry; P. Nieminen; J. Pakarinen; P. Papadakis; E. Parr; P. Peura; P. Rahkila; S. Rinta-Antila; P. Ruotsalainen; M. Sandzelius; J. Sarén; C. Scholey; J. Sorri; J. Uusitalo

doi:10.1140/epja/i2019-12675-8

EPJ

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b
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2021 Impact factor 3.131

Hadrons and Nuclei

Eur. Phys. J. A (2019) 55: 1
https://doi.org/10.1140/epja/i2019-12675-8

Regular Article - Experimental Physics

Confirming band assignments in ¹⁶⁷ytterbium with gamma-gamma-electron triple-coincidence spectroscopy

J. Smallcombe¹^,2^,3^*, P. J. Davies²^,4, C. J. Barton², L. L. Andersson³, P. A. Butler³, D. M. Cox³, T. Grahn⁵, P. T. Greenlees⁵, K. Hauschild⁵^,6, A. Herzan³^,5^,7, R. -D. Herzberg³, U. Jakobsson⁵, D. G. Jenkins², P. Jones⁵, R. Julin⁵, S. Juutinen⁵, S. Ketelhut⁵, M. Leino⁵, A. Lopez-Martens⁵^,6, A. Mistry³, P. Nieminen⁵, J. Pakarinen⁵, P. Papadakis³^,5, E. Parr³, P. Peura⁵, P. Rahkila⁵, S. Rinta-Antila⁵, P. Ruotsalainen⁵, M. Sandzelius⁵, J. Sarén⁵, C. Scholey⁵, J. Sorri⁵^,8 and J. Uusitalo⁵

¹ TRIUMF, 4004 Wesbrook mall, V6T 2A3, Vancouver, BC, Canada
² Department of Physics, University of York, YO10 5DD, Heslington, York, UK
³ Oliver Lodge Laboratory, University of Liverpool, L69 9ZE, Liverpool, UK
⁴ School of Physics and Astronomy, University of Manchester, M13 9PL, Manchester, UK
⁵ University of Jyväskylä, Department of Physics, P.O. Box 35, FI-40014, Jyväskylä, Finland
⁶ CSNSM-IN2P3-CNRS, Universit Paris-Sud, 91406, Orsay, France
⁷ Institute of Physics, Slovak Academy of Sciences, SK-84511, Bratislava, Slovakia
⁸ Sodankylä Geophysical Observatory, University of Oulu, 99600, Sodankylä, Finland

^* e-mail: james.smallcombe@liverpool.ac.uk

Received: 12 September 2018
Accepted: 6 December 2018
Published online: 10 January 2019

Abstract

Multipolarity measurements are presented for transitions in the deformed odd-mass nucleus ¹⁶⁷ Yb in support of tentative spin assignments and level interpretations based upon the cranked-Nilsson model. Internal-conversion coefficients were measured with the SAGE (Silicon And GErmanium) spectrometer confirming several E2 transition assignments. The array of high-purity germanium detectors enabled the recording of high-multiplicity events from which and data sets were extracted and the technique of high-fold -ray gating was demonstrated to cleanly isolate transitions of interest.