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001451460 019__ $$a1351752206
001451460 020__ $$a9783031171505$$q(electronic bk.)
001451460 020__ $$a3031171500$$q(electronic bk.)
001451460 020__ $$z9783031171499
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001451460 0247_ $$a10.1007/978-3-031-17150-5$$2doi
001451460 035__ $$aSP(OCoLC)1351662465
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001451460 050_4 $$aQC793.3.S6
001451460 08204 $$a539.7/25$$223/eng/20221215
001451460 1001_ $$aSensharma, Nirupama,$$eauthor.
001451460 24510 $$aWobbling motion in nuclei :$$btransverse, longitudinal, and chiral /$$cNirupama Sensharma.
001451460 264_1 $$aCham :$$bSpringer,$$c[2022]
001451460 264_4 $$c©2022
001451460 300__ $$a1 online resource (xvii, 142 pages) :$$billustrations (chiefly color).
001451460 336__ $$atext$$btxt$$2rdacontent
001451460 337__ $$acomputer$$bc$$2rdamedia
001451460 338__ $$aonline resource$$bcr$$2rdacarrier
001451460 4901_ $$aSpringer theses
001451460 500__ $$a"Doctoral thesis accepted by University of Notre Dame, USA."
001451460 504__ $$aIncludes bibliographical references.
001451460 5050_ $$aIntro -- Supervisors' Foreword -- Acknowledgments -- Contents -- Parts of This Thesis Have Been Published in the Following Journal Articles -- Symbols -- 1 Background and Motivation -- 1.1 Nuclear Deformations -- 1.2 Nuclear Triaxiality -- 1.2.1 Nuclear Wobbling Motion -- 1.2.2 Chirality of Nuclear Rotation -- 1.3 Motivation for Studying 135Pr Nucleus -- 1.4 Motivation for Studying 187Au Nucleus -- References -- 2 Theory -- 2.1 Nuclear Shell Model -- 2.1.1 Harmonic Oscillator Potential -- 2.1.2 Woods-Saxon Potential -- 2.2 Nuclear Shapes and the Deformed Shell Model -- 2.3 Collective Rotation
001451460 5058_ $$a2.3.1 Rotation About a Principal Axis -- 2.3.2 Rotation About a Tilted Axis -- 2.3.3 Rotation Out of the Principal Planes -- 2.4 Wobbling Modes in Nuclei -- 2.4.1 Wobbling in Even-Even Nuclei -- 2.4.2 Wobbling in Odd-A Nuclei -- 2.4.2.1 Longitudinal and Transverse Wobbling Bands -- 2.4.2.2 Yrast and Signature Partner Bands -- 2.5 Chiral Rotation in Nuclei -- 2.6 Nuclear Models to Study Wobbling Motion -- 2.6.1 Particle Rotor Model -- 2.6.2 Quasiparticle Triaxial Rotor Model -- 2.6.3 Triaxial Projected Shell Model -- 2.7 Theory of Angular Distributions -- References -- 3 Experimental Details
001451460 5058_ $$a3.1 Interaction of Gamma Rays with Matter -- 3.2 Gamma-Ray Spectroscopy with Germanium Detectors -- 3.2.1 High Purity Germanium (HPGe) Detectors -- 3.2.2 Response Function of HPGe Spectra -- 3.2.3 Compton Suppression -- 3.2.4 The Gammasphere Array -- 3.2.4.1 Honeycomb Suppression Used in Gammasphere -- 3.2.4.2 Digital Gammasphere Acquisition System -- 3.3 Angular Distributions and DCO-Ratios -- 3.4 Reduced Transition Probability Ratios -- 3.5 Heavy-Ion Fusion-Evaporation Reactions -- 3.5.1 Beam and Target Specifications -- 3.6 ATLAS -- 3.7 Run Details -- 3.7.1 135Pr Run -- 3.7.2 187Au Runs
001451460 5058_ $$a3.7.3 Chiral Wobbler Run -- 3.8 Pre-Calibration with Digital Gammasphere Data -- 3.9 Energy and Efficiency Calibrations -- References -- 4 Analysis -- 4.1 Data Sorting Into Matrices and Cubes -- 4.2 Background Subtraction Techniques -- 4.3 Coincidence Relationships and Level Schemes -- 4.3.1 135Pr -- 4.3.2 187Au -- 4.4 Spin and Parity Assignments -- 4.4.1 Angular Distributions and DCO-Like Ratios -- 4.4.1.1 135Pr -- 4.4.1.2 187Au -- References -- 5 Results and Theoretical Discussion -- 5.1 Two-Phonon Wobbling in 135Pr -- 5.2 Wobbling Motion in 187Au -- 5.2.1 Longitudinal Wobbling Bands
001451460 5058_ $$a5.2.2 Transverse Wobbling Bands -- 5.3 Chiral Wobbling in 135Pr -- References -- 6 Updates and Future Work -- 6.1 Updates -- 6.2 Future Work -- References -- A Gammasphere Detector and Ring Information -- B Digital Gammasphere Calibration Parameters -- C Gammasphere Energy and Efficiency Calibration Parameters -- Curriculam vitae of Nirupama Sensharma
001451460 506__ $$aAccess limited to authorized users.
001451460 520__ $$aThis 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.
001451460 588__ $$aOnline resource; title from PDF title page (SpringerLink, viewed December 15, 2022).
001451460 650_0 $$aNuclear spin.
001451460 655_0 $$aElectronic books.
001451460 77608 $$iPrint version: $$z3031171497$$z9783031171499$$w(OCoLC)1342492175
001451460 830_0 $$aSpringer theses.
001451460 852__ $$bebk
001451460 85640 $$3Springer Nature$$uhttps://univsouthin.idm.oclc.org/login?url=https://link.springer.com/10.1007/978-3-031-17150-5$$zOnline Access$$91397441.1
001451460 909CO $$ooai:library.usi.edu:1451460$$pGLOBAL_SET
001451460 980__ $$aBIB
001451460 980__ $$aEBOOK
001451460 982__ $$aEbook
001451460 983__ $$aOnline
001451460 994__ $$a92$$bISE