Wobbling Motion in Nuclei: Transverse, Longitudinal, and Chiral

This thesis presents new observations of nuclear wobbling, expanding our understanding of nuclear triaxiality and its prevalence in the nuclear chart. It identifies 135 Pr and 187 Au as wobblers, establishes triaxiality as a general phenomenon, and investigates different kinds of wobbling modes. It also reports the first observation of co-existing chiral and wobbling modes in a single nucleus.

Format: Hardback
Length: 142 pages
Publication date: 23 November 2022
Publisher: Springer International Publishing AG

This thesis makes significant new observations of nuclear wobbling, expanding our understanding of nuclear triaxiality and its prevalence in the nuclear chart. Triaxial nuclear shapes are a rare phenomenon, and their experimental identification often relies on two unique signatures: nuclear wobbling motion and chiral rotation. While nuclear chirality is well-studied, experimental observations of wobbling nuclei are limited. By identifying 135 Pr and 187 Au as wobblers, this work establishes triaxiality as a general phenomenon present in different regions of the nuclear chart, regardless of spin or deformation.

A major focus of this work is the detailed investigation of the different kinds of wobbling modes. Depending on the geometry of the nuclear system, wobbling can be classified into two types: longitudinal and transverse. This work has reported evidence of the possible coexistence of both forms of wobbling in a single nucleus for the first time. Another important result reported in this work is the very first observation of co-existing chiral and wobbling modes in the 135 Pr nucleus.

This thesis details the experimental methods that led to this breakthrough, along with pertinent theoretical interpretations. The identification of 135 Pr and 187 Au as wobblers has significant implications for our understanding of nuclear structure and dynamics. It demonstrates that triaxiality is a general phenomenon present in different regions of the nuclear chart and that wobbling can coexist with other forms of deformation. The detailed investigation of wobbling modes has also shed light on the complex interplay between nuclear spin and deformation, and has opened up new avenues for research in this field.

In conclusion, this thesis presents significant new observations of nuclear wobbling, expanding our understanding of nuclear triaxiality and its prevalence in the nuclear chart. The identification of 135 Pr and 187 Au as wobblers has significant implications for our understanding of nuclear structure and dynamics, and the detailed investigation of wobbling modes has shed light on the complex interplay between nuclear spin and deformation. This work has opened up new avenues for research in this field and has the potential to have a profound impact on our understanding of the nuclear universe.

Weight: 412g
Dimension: 235 x 155 (mm)
ISBN-13: 9783031171499
Edition number: 1st ed. 2022