Chaos-driven decay of nuclear giant resonances: Quantum route to self-organization

Journal Article · Mon May 02 00:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.2839· OSTI ID:7068664

Drozdz, S; Nishizaki, S; Wambach, J ^[1]

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1. Department of Physics, University of Illinois at Urbana-Champaign Urbana, Illinois 61801 (United States) Institute of Nuclear Physics, PL-31-342 Krakow (Poland) Institut fuer Kernphysik, Forschungszentrum Juelich, D-5170 Juelich (Germany) College of Humanities and Social Sciences, Iwate University, Ueda 3-18-34, Morioka 020 (Japan)

The influence of background states with increasing level of complexity on the strength distribution of the isoscalar and isovector giant quadrupole resonance in [sup 40]Ca is studied. It is found that the background characteristics, typical for chaotic systems, strongly affect the fluctuation properties of the strength distribution. In particular, the small components of the wave function obey a scaling law analogous to self-organized systems at the critical state. This appears to be consistent with the Porter-Thomas distribution of the transition strength.

• OSTI ID: 7068664
• Journal Information: Physical Review Letters; (United States), Vol. 72:18; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CALCIUM 40
GIANT RESONANCE
QUADRUPOLES
DISTRIBUTION
FLUCTUATIONS
ISOVECTORS
PORTER-THOMAS DISTRIBUTION
SCALING LAWS
STRENGTH FUNCTIONS
WAVE FUNCTIONS
ALKALINE EARTH ISOTOPES
CALCIUM ISOTOPES
EVEN-EVEN NUCLEI
FUNCTIONS
ISOTOPES
LIGHT NUCLEI
MULTIPOLES
NUCLEI
RESONANCE
STABLE ISOTOPES
TENSORS
VARIATIONS
VECTORS
663300* - Nuclear Reactions & Scattering
General- (1992-)
661300 - Other Aspects of Physical Science- (1992-)