Second order phase transitions from octupole-nondeformed to octupole-deformed shape in the alternating parity bands of nuclei around 240Pu based on data

R. V. Jolos, P. von Brentano, and J. Jolie
Phys. Rev. C 86, 024319 – Published 30 August 2012

Abstract

Background: Shape phase transitions in finite quantal systems are very interesting phenomena of general physical interest. There is a very restricted number of the examples of nuclei demonstrating this phenomenon.

Purpose: Based on experimental excitation spectra, there is a second order phase transition in the alternating parity bands of some actinide nuclei.

Method: The mathematical techniques of supersymmetric quantum mechanics, two-center octupole wave functions ansatz, and the Landau theory of phase transitions are used to analyze the experimental data on alternating parity bands.

Results: The potential energy of the octupole collective motion is determined and analyzed for all observed values of the angular momentum of the alternating parity band states in 232Th, 238U, and 240Pu.

Conclusion: It is shown that as a function of increasing angular momentum there is a second order phase transition from the octupole-nondeformed to the octupole-deformed shape in the considered nuclei.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 19 June 2012

DOI:https://doi.org/10.1103/PhysRevC.86.024319

©2012 American Physical Society

Authors & Affiliations

R. V. Jolos1,2,*, P. von Brentano2, and J. Jolie2

  • 1Joint Institute for Nuclear Research, 141980 Dubna, Russia
  • 2Institut für Kernphysik der Universität zu Köln, 50937 Köln, Germany

  • *jolos@theor.jinr.ru

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 86, Iss. 2 — August 2012

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×