# Available student project - Latest challenges in nuclear fission theory

## Research fields

- Physics of the Nucleus
- Theoretical Physics
- Physics of the Nucleus
- Theoretical Physics
- Physics of the Nucleus
- Theoretical Physics
- Physics of the Nucleus
- Theoretical Physics

## Project details

Nuclear fission occurs when a nucleus splits into two (or three) fragments.

Although the phenomenon is known for a long time, its overall understanding remains

both an experimental and theoretical challenge. Moreover precision on fission properties

are of primary interest for the astrophysics nuclear r-process taking place

in supernovae.

The Time-Dependent Generator Coordinate Method (GCM) is a state-of-the-art method

for fission calculations. In the first (static) step, mean field calculations

are performed to generate all the shapes of the fissioning nucleus up to

scission. The Hartree-Fock-Bogoliubov (HFB) theory used at this level solves

the many body problem in a fully quantized way and is able to describe

the nucleus as a superfluid system. Static fission properties such as

barrier heights or kinetic energy between fragments are calculated.

In the second (dynamical) step a GCM wave function of the nucleus is built

from the static HFB states. Then the time dependent Schrodinger

equation is solved to get the dynamical properties of the process.

In particular fragment mass and charge distributions will be deduced from step 2.

In this project various aspects of fission can be investigated:

- TDGCM calculations using tensor built-in nuclear interaction

- Dynamical superfluid correlations: impact of restoration of particle

symmetry breaking along the fission path

- Approximations on collective inertia used in step 2 can be tested

- Analytical derivations of the nuclear interaction to improve the superfluidity of the nucleus

Each of these studies corresponds to new fields of investigation

in nuclear fission. Numerical calculations will be performed on the

NCI supercomputer.

## Required background

No specific background is required as the project can be adapted to various levels of knowledge.

## Project suitability

- 3rd year special project
- PhB (1st year)
- PhB (2nd or 3rd year)
- Honours project
- Phd or Masters
- Vacation scholar