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.

Publications

10 25 50
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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

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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

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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

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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 01/10/2015 31/03/2021
2016259 Studentship ST/N504178/1 18/09/2017 30/09/2021 Liam Barber