Wobbling Motion in Nuclei: Transverse, Longitudinal, and Chiral

Nirupama Sensharma (Autor)

Buch | Hardcover

XVII, 142 Seiten

2022 | 1st ed. 2022
Springer International Publishing (Verlag)
978-3-031-17149-9 (ISBN)

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This thesis presents significant new observations of nuclear wobbling, and thus expands our understanding of nuclear triaxiality and its prevalence in the nuclear chart. Triaxial nuclear shapes are a very rare phenomena and their experimental identification often relies on two unique signatures - nuclear wobbling motion and chiral rotation. While nuclear chirality is a well-studied phenomenon, experimental observations of wobbling nuclei are rather limited. With the identification of ¹³⁵Pr and ¹⁸⁷Au as wobblers, this work establishes triaxiality to be a general phenomenon present in different regions of the nuclear chart, irrespective of any particular 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, for the first time, reported evidence of the possible coexistence of both forms of wobbling in a single nucleus. Another important result reported in this work is the very first observation of co-existing chiral and wobbling modes in the ¹³⁵Pr nucleus. This thesis details the experimental methods that led to this breakthrough, along with pertinent theoretical interpretations.

Nirupama Sensharma is a Postdoctoral Associate at the Department of Physics and Astronomy at the University of North Carolina at Chapel Hill. She graduated from the University of Delhi in India with a bachelor's degree in physics and a master's degree in nuclear science and technology. In 2015, she joined the University of Notre Dame in Indiana as a graduate student and graduated in 2021 with a PhD in Nuclear Physics. Her research primarily focuses on the use of gamma spectroscopic techniques to study the exotic phenomena of wobbling motion and chiral rotation exhibited by triaxial nuclei.

Chapter 1. Background and motivation.- Chapter 2. Theory.- Chapter 3. Experimental details.- Chapter 4. Analysis.- Chapter 5. Results and theoretical discussion.- Chapter 6. Updates and Future work.

Erscheinungsdatum	24.11.2022
Reihe/Serie	Springer Theses
Zusatzinfo	XVII, 142 p. 76 illus., 68 illus. in color.
Verlagsort	Cham
Sprache	englisch
Maße	155 x 235 mm
Gewicht	397 g
Themenwelt	Naturwissenschaften ► Physik / Astronomie ► Atom- / Kern- / Molekularphysik
Themenwelt	Naturwissenschaften ► Physik / Astronomie ► Hochenergiephysik / Teilchenphysik
Schlagworte	Chirality rotation • Gammasphere array • nuclear deformation • Nuclear Shell Model • Nuclear triaxiality • Nuclear wobbling • Particle rotor model • Quasiparticle triaxial rotor model • Triaxial projected shell model
ISBN-10	3-031-17149-7 / 3031171497
ISBN-13	978-3-031-17149-9 / 9783031171499
Zustand	Neuware