- th / 0 30 50 55 v 1 1 9 M ay 2 00 3 Double Charge Exchange And Configuration Mixing

l - th / 0 30 10 29 v 1 9 J an 2 00 3 Intruder bands and configuration mixing in the lead isotopes

A three-configuration mixing calculation is performed in the context of the interacting boson model with the aim to describe recently observed collective bands built on low-lying 0 + states in neutron-deficient lead isotopes. The configurations that are included correspond to the regular, spherical states as well as two-particle two-hole and four-particle four-hole excitations across the Z = 82...

ar X iv : n uc l - th / 0 30 50 64 v 1 2 1 M ay 2 00 3 CHAPTER 1 Hydrodynamical description of collective flow

I review how hydrodynamical flow is related to the observed flow in ul-trarelativistic heavy ion collisions and how initial conditions, equation of state and freeze-out temperature affect flow in hydrodynamical models.

v 2 2 5 A ug 2 00 3 Double Charge Exchange And Configuration Mixing

The energy dependence of forward pion double charge exchange reactions on light nuclei is studied for both the Ground State transition and the Double-Isobaric-Analog-State transitions. A common characteristic of these double reactions is a resonance-like peak around 50 MeV pion lab energy. This peak arises naturally in a two-step process in the conventional pion-nucleon system with proper handl...

ar X iv : n uc l - th / 0 50 50 24 v 1 9 M ay 2 00 5 Structure of isomeric states in 66 As and 67 As

- th / 0 30 50 74 v 1 2 6 M ay 2 00 3 Meson Exchange Currents in ( e , e ′ p ) recoil polarization observables

A study of the effects of meson-exchange currents and isobar configurations in A(e, e ′ p)B reactions is presented. We use a distorted wave impulse approximation (DWIA) model where final-state interactions are treated through a phenomenological optical potential. The model includes relativistic corrections in the kinematics and in the electromagnetic one-and two-body currents. The full set of p...