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Yrast structures in the light Pt isotopes 169–173Pt

D T Joss1, J Simpson1, D E Appelbe1, K Lagergren1,2,8, C J Barton1,9, B Cederwall2, S Eeckhaudt3, T Grahn3, P M Jones3, R Julin3, S Juutinen3, B Hadinia2, H Kettunen3, M Leino3, A-P Leppänen3, P Nieminen3,10, R D Page4, J Pakarinen3, E S Paul4, J Perkowski3,5, P Rahkila3, M A Riley6, C Scholey3, J Uusitalo3, K Van de Vel3,7, D D Warner1 and D R Wiseman4

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The exploitation of the recoil-decay tagging (RDT) technique has reinvigorated experimental investigations of the shape coexistence phenomenon in heavy neutron-deficient nuclei. In a recent experiment using the JUROGAM and GREAT spectrometers in conjunction with the RITU gas-filled separator, excited states have been investigated in the light platinum isotopes. In addition to extending the yrast sequences in 170Pt and 172Pt, the first observation of excited states in the odd-N isotopes, 169Pt and 173Pt, is reported. The bands are discussed in terms of trends in level excitation energies as a function of neutron number.


PACS

21.10.Re Collective levels

27.70.+q 150(less-than-or-equal-to)A(less-than-or-equal-to)189

23.20.-g Electromagnetic transitions

Subjects

Nuclear physics

Dates

Issue 10 (October 2005)

Received 9 March 2005

Published 12 September 2005



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