Decay Out of Low Spin Superdeformed States in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Pb</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>194</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> by Weak Mixing with Normal Deformed States

R. Krücken; A. Dewald; P. Sala; C. Meier; H. Tiesler; J. Altmann; K. O. Zell; P. von Brentano; D. Bazzacco; C. Rossi-Alvarez; R. Burch; R. Menegazzo; G. de Angelis; G. Maron; M. de Poli

doi:10.1103/PhysRevLett.73.3359

Decay Out of Low Spin Superdeformed States in ${}^{194}{Pb}$ by Weak Mixing with Normal Deformed States

R. Krücken, A. Dewald, P. Sala, C. Meier, H. Tiesler, J. Altmann, K. O. Zell, P. von Brentano, D. Bazzacco, C. Rossi-Alvarez, R. Burch, R. Menegazzo, G. de Angelis, G. Maron, and M. de Poli

Phys. Rev. Lett. 73, 3359 – Published 19 December 1994

Abstract

Lifetimes of superdeformed (SD) states in ${}^{194}{Pb}$ were measured with the recoil distance Doppler shift method. The transition quadrupole moments were found to be constant in the whole SD band down to the lowest observed transition. The lifetime of the spin $10 ℏ$ SD state is reduced as compared to the rotational value due to the $γ$ decay out of the band. This decay can be described by a very small admixture of normal deformed states to the spin $10 ℏ$ SD state. The obtained lifetimes provide strong experimental evidence for the existence of the SD configuration down to very low spin states.

Received 17 May 1994

DOI:https://doi.org/10.1103/PhysRevLett.73.3359

Authors & Affiliations

R. Krücken¹, A. Dewald¹, P. Sala¹, C. Meier¹, H. Tiesler¹, J. Altmann¹, K. O. Zell¹, P. von Brentano¹, D. Bazzacco², C. Rossi-Alvarez², R. Burch², R. Menegazzo², G. de Angelis³, G. Maron³, and M. de Poli³

¹Institut für Kernphysik, Universität zu Köln, Köln, Germany
²Dipartimento di Fisica, Universita and Istituto Nazionale di Fisica Nucleare Sezione Padova, Padova, Italy
³Istituto Nazionale di Fisica Nucleare, Laboratori Nationali di Legnaro, Legnaro, Italy