Exposing subtle details of the nuclear force through lifetime measurements
Lead Research Organisation:
University of Manchester
Department Name: Physics and Astronomy
Abstract
The lifetime of a nuclear state is related to the initial and nal wavefunctions that
define the states by the quantum mechanical Fermi's golden rule. When a nucleus
undergoes de-excitation, it typically does so through the emission of a gamma
ray.
This project aims to obtain lifetime measurements for nuclear states through de-
tection of these emitted gamma rays, particularly for proton rich nuclei. The
lifetime measurements will be made using plunger and/or fast timing techniques,
both of which are active areas of research within the nuclear department.
These lifetime measurements will be made with the intention of inferring some
information regarding the structure of the nuclei concerned. This is as proton rich
nuclei provide a method of probing weak but important aspects of the nuclear
force generally masked in regions closer to stability. One such example being the
direct measurement of effective charges of nucleons which are used to calculate
transition matrix elements in theory.
define the states by the quantum mechanical Fermi's golden rule. When a nucleus
undergoes de-excitation, it typically does so through the emission of a gamma
ray.
This project aims to obtain lifetime measurements for nuclear states through de-
tection of these emitted gamma rays, particularly for proton rich nuclei. The
lifetime measurements will be made using plunger and/or fast timing techniques,
both of which are active areas of research within the nuclear department.
These lifetime measurements will be made with the intention of inferring some
information regarding the structure of the nuclei concerned. This is as proton rich
nuclei provide a method of probing weak but important aspects of the nuclear
force generally masked in regions closer to stability. One such example being the
direct measurement of effective charges of nucleons which are used to calculate
transition matrix elements in theory.
Organisations
People |
ORCID iD |
| David Matthew Cullen (Primary Supervisor) | |
| Liam Barber (Student) |
Publications
Barber L
(2020)
Performing the differential decay curve method on ? -ray transitions with unresolved Doppler-shifted components
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Barber L
(2020)
A charge plunger device to measure the lifetimes of excited nuclear states where transitions are dominated by internal conversion
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Giles M
(2019)
Probing isospin symmetry in the ( Fe 50 , Mn 50 , Cr 50 ) isobaric triplet via electromagnetic transition rates
in Physical Review C
Giles M
(2019)
TPEN: A Triple-foil differential Plunger for lifetime measurements of excited states in Exotic Nuclei
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Lewis M
(2019)
Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei
in Physics Letters B
Mallaburn M
(2019)
A time-of-flight correction procedure for fast-timing data of recoils with varying implantation positions at a spectrometer focal plane
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Studentship Projects
| Project Reference | Relationship | Related To | Start | End | Student Name |
|---|---|---|---|---|---|
| ST/N504178/1 | 30/09/2015 | 30/03/2021 | |||
| 2016259 | Studentship | ST/N504178/1 | 30/09/2017 | 29/09/2021 | Liam Barber |