Phd Proposal: Exploring Magicity And Nuclear Forces In 68Ni

4 Oct 2023

Job Information

Organisation/Company

GANIL

Department

Direction

Research Field

Physics

Researcher Profile

First Stage Researcher (R1)

Country

France

Application Deadline

30 Jun 2024 - 00:00 (Europe/Paris)

Type of Contract

Temporary

Job Status

Full-time

Offer Starting Date

1 Oct 2024

Is the job funded through the EU Research Framework Programme?

Not funded by an EU programme

Is the Job related to staff position within a Research Infrastructure?

No

Offer Description

We propose to study the magic versus superfluid character of 68Ni by means of neutron adding (d,p) and neutron removal (p,d) transfer reactions. This way, we get unique access to the occupancy of the normally occupied orbits and the vacancy of the valence ones. If a sharp transition in occupancy is found, the nucleus is considered as magic, otherwise rather superfluid. Furthermore, this study also allows to study the spin-orbit and tensor forces, essential to the modeling of atomic nuclei.

The 68Ni nucleus is produced by means of fragmentation reaction, selected by the LISE spectrometer at GANIL and identified by means of position-sensitive gas detectors, ionization chambers and plastic scintillators. Protons or deuterons arising from transfer reactions in CD2 or CH2 targets for the (d,p) or (p,d) transfer reactions, respectively are detected in the highly-segmented Si-CsI array (MUST2). When the 69Ni or 67Ni are produced in an excited state, their in-flight gamma-rays are detected with the segmented clover Ge detectors of the EXOGAM2 array. This way, the full kinematics of the reactions is obtained.

These two objectives of studying magicity/superfluidity and the spin- orbit/tensor forces in atomic nuclei far from stability are at the forefront of international researches. It is proposed to answer to an unresolved question for 20 years for the first item. The second is a rather new field of research that I initiated some years ago to use spin-orbit splitting's as probes of the different components of the nuclear force. In particular, the role and amplitude of the tensor force is still a major puzzle: claimed to be absolutely essential in some theoretical approaches, it is not considered at all by others. Reaching a better understand of the role of nuclear forces is essential to reach a predictability for so far unknown nuclei, such as those produced in explosive stellar burnings.

During his/her PhD, the student will participate to several experiments planned at the LISE spectrometer in an international collaborative work, dealing with topics on nuclear clustering, nuclear astrophysics, or fundamental symmetries, thus enriching his/her experimental skills and nuclear physics background over the years, while working on his/her own project.

Requirements

Research Field

Physics

Education Level

Master Degree or equivalent

Skills/Qualifications

root software analysis, detectors such as Ge, Si or/and gas-filled detectors, ability and pleasure to work in a team.

Languages

ENGLISH

Level

Good

Research Field

Physics

Additional Information Work Location(s)

Number of offers available

1

Company/Institute

GANIL

Country

France

City

Caen

Street

boulevard Becquerel

Geofield

Where to apply

E-mail

[email protected]

Contact

City

CAEN

Website

https: // www. ganil-spiral2.eu

Street

Boulevard Henri Becquerel

STATUS: EXPIRED