Collinear Resonance Ionization Spectroscopy of Neutron-Rich Indium Isotopes

This thesis describes the application of the collinear resonance laser spectroscopy to sensitively measure the electromagnetic nuclear observables of the neutron-rich indium isotopes 115-131 In. This entailed a systematic study of the efficiency of resonant ionization schemes to extract the hyperfine structure of the isotopes, the atomic charge exchange process and benchmarking of modern atomic calculations with a laser ablation ion source. This allowed determination of the root-mean-square nuclear charge radii, nuclear magnetic dipole moments, nuclear electric quadrupole moments and nuclear spins of the 113-131 In isotopes with high accuracy.

With a proton hole in the Z = 50 nuclear shell closure of tin and several nuclear isomer states, these measurements of the indium (Z = 49) isotope chain provided an efficient probe of the evolution of nuclear structure properties towards and at the doubly-magic nuclear shell closure of 132 Sn (N = 82) - revealing unpredicted changes.

Nominated as an outstanding Ph.D. thesis by the University of Manchester, Manchester, United Kingdom Measurements of fundamental electromagnetic observables of the most exotic neutron-rich indium (Z = 49) isotopes to-date using highly sensitive laser spectroscopy techniques Probes changes in nuclear structure in the doubly-magic 132Sn region

Inhalt
Introduction.- Background Atomic and Nuclear Physics.- Experimental Method Background.- Laser Spectroscopy Setup for the Indium Experiments.- Analysis of Neutron-Rich Indium.- Evolution of Neutron-Rich Indium Proton-Hole States.- Conclusion.