Muon-induced fission: A probe for nuclear dissipation and fission dynamics

Journal Article · Wed Sep 01 00:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.1297· OSTI ID:6390796

Oberacker, V E; Umar, A S; Wells, J C; Bottcher, C; Strayer, M R; Maruhn, J A ^[1]

---

1. Center for Computationally Intensive Physics, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States) Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States) Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States) Institut fuer Theoretische Physik, Universitaet Frankfurt, D-6000 Frankfurt am Main (Germany)

Excited muonic atoms in the actinide region may induce prompt fission. Following atomic muon capture, some of the inner-shell transitions proceed by inverse internal conversion, i.e., the excitation energy of the muonic atom is transferred to the nucleus. In particular, the ([ital E]2:3[ital d][r arrow]1[ital s]) muonic transition energy is close to the peak of the isoscalar giant quadrupole resonance in actinide nuclei which exhibits a large fission width. Prompt fission in the presence of a bound muon allows us to study the dynamics of large-amplitude collective motion. We solve the time-dependent Dirac equation for the muonic spinor wave function in the Coulomb field of the fissioning nucleus on a three-dimensional lattice and demonstrate that the muon attachment probability to the light fission fragment is a measure of the nuclear energy dissipation between the outer fission barrier and the scission point.

• DOE Contract Number: FG05-87ER40376; AC05-84OR21400
• OSTI ID: 6390796
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 48:3; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE NUCLEI
FISSION
MUONIC ATOMS
CAPTURE
COLLECTIVE EXCITATIONS
COMPUTER CALCULATIONS
COULOMB FIELD
DIRAC EQUATION
E2-TRANSITIONS
GIANT RESONANCE
TIME DEPENDENCE
WAVE FUNCTIONS
ATOMS
DIFFERENTIAL EQUATIONS
ELECTRIC FIELDS
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EXCITATION
FUNCTIONS
HEAVY NUCLEI
MULTIPOLE TRANSITIONS
NUCLEAR REACTIONS
NUCLEI
PARTIAL DIFFERENTIAL EQUATIONS
RESONANCE
WAVE EQUATIONS
663470* - Fission- (1992-)