Variation in Displacement Energies Due to Isospin-Nonconserving Forces

Isobaric multiplet yrast energies and isospin nonconserving forces.

The isovector and isotensor energy differences between yrast states of isobaric multiplets in the lower half of the pf region are quantitatively reproduced in a shell model context. The isospin nonconserving nuclear interactions are found to be at least as important as the Coulomb potential. Their isovector and isotensor channels are dominated by J=2 and J=0 pairing terms, respectively. The res...

Induced parity nonconserving interaction and enhancement of two-nucleon parity nonconserving forces.

Hopper Wall Simulation in ANSYS to Determine Displacement Due to Single Ball Impact

Deformation of the silo wall due to the single ball impact is modeled in ANSYS. The material in silo, as a Winkler bed, is replaced by spring-damper elements and the spring stiffness and damper coefficients are evaluated of the granular material and wall properties. The granular material deformation under the specified force is measured to evaluate the granular stiffness to be used for determin...

Isospin Effects in Spectator Fragmentation at Relativistic Energies

The gross properties of projectile fragmentation are very similar for all the studied systems [1], as demonstrated for the τ parameterization (σ(Z) ∝ Z−τ ) of the charge yields σ(Z) in Fig. 1. The fitting range was 3 ≤ Z ≤ 15. The τ parameters follow a nearly universal curve with a minimum near the reducedZbound/Zproj=0.5. Specific isotopic effects, even though small, can nevertheless be observ...

Isospin nonequilibrium in heavy-ion collisions at intermediate energies.

We study the equilibration of isospin degree of freedom in intermediate energy heavy-ion collisions using an isospin-dependent BUU model. It is found that there exists a transition from the isospin equilibration at low energies to nonequilibration at high energies as the beam energy varies across the Fermi energy in central, asymmetric heavy-ion collisions. At beam energies around 55 MeV/nucleo...