Confirmation of triple shape coexistence in <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>179</mn></mrow></msup></mrow><mi mathvariant="normal">Hg</mi><mo>:</mo></math> Focal plane spectroscopy of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>α</mi></math> decay of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>183</mn></mrow></msup></mrow><mi mathvariant="normal">Pb</mi></math>

D. G. Jenkins; A. N. Andreyev; R. D. Page; M. P. Carpenter; R. V. F. Janssens; C. J. Lister; F. G. Kondev; T. Enqvist; P. T. Greenlees; P. M. Jones; R. Julin; S. Juutinen; H. Kettunen; P. Kuusiniemi; M. Leino; A.-P. Leppännen; P. Nieminen; J. Pakarinen; P. Rahkila; J. Uusitalo; C. D. O’Leary; P. Raddon; A. Simons; R. Wadsworth; D. T. Joss

doi:10.1103/PhysRevC.66.011301

Rapid Communication

Confirmation of triple shape coexistence in $^{179} Hg :$ Focal plane spectroscopy of the $α$ decay of $^{183} Pb$

D. G. Jenkins, A. N. Andreyev, R. D. Page, M. P. Carpenter, R. V. F. Janssens, C. J. Lister, F. G. Kondev, T. Enqvist, P. T. Greenlees, P. M. Jones, R. Julin, S. Juutinen, H. Kettunen, P. Kuusiniemi, M. Leino, A.-P. Leppännen, P. Nieminen, J. Pakarinen, P. Rahkila, J. Uusitalo, C. D. O’Leary, P. Raddon, A. Simons, R. Wadsworth, and D. T. Joss

Phys. Rev. C 66, 011301(R) – Published 18 July 2002

Abstract

The $α$ decay of $^{183} Pb$ has been studied in detail at the focal plane of the RITU gas-filled separator. The four previously known $α$ decay branches have been ordered into the decay of two isomers in $^{183} Pb .$ The deduced decay scheme and the interpretation of the inferred $α$ decay hindrance factors and $γ$ rays observed at the focal plane are strongly in favor of the recent suggestion of triple shape coexistence—oblate, prolate, and near-spherical in the daughter nucleus $^{179} Hg .$