Download or read book Shapes and Shells in Nuclear Structure written by Sven Gvsta Nilsson and published by Cambridge University Press. This book was released on 1995-06-22 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed review of the key models of nuclear structure and dynamics.
Download or read book Nuclear Shapes and Nuclear Structure at Low Excitation Energies written by Michel Vergnes and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a NATO ARW held in Cargese, France, June 3-7, 1991
Download or read book Pear shaped Nuclei written by Suresh C Pancholi and published by World Scientific. This book was released on 2020-03-17 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last several decades, the study of nuclear shapes has been of prime importance. A large number of investigations, both theoretical and experimental, have led to the discovery of a rich variety of nuclear shapes like, the basic spherical, deformed, superdeformed, triaxial, shape coexistence, reflection asymmetric (pear-shape) and other exotic ones. Apart from common nuclear structural properties, each of the mentioned shapes manifests properties associated with its specific form. It is interesting to note that most deformed nuclei are prolate deformed. In this monograph, attention is paid to pear-shaped nuclei.
Download or read book Shapes and Shells in Nuclear Structure written by Sven Gösta Nilsson and published by . This book was released on 1995 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed review of the key models of nuclear structure and dynamics.
Download or read book 2d atoms written by Helmut Albert and published by BoD – Books on Demand. This book was released on 2023-08-14 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2d atoms. Nuclear shapes and nuclear structure The paper compares the scientific ideas of spherical and deformed atomic nuclei with the previously unknown theory of checkerboard and planar atomic structure. For this purpose, the interpretations of the nuclear structure of international researchers were compared with the author's interpretations according to the checkerboard and planar atomic structure. Helmut Albert, Freiburg / Germany 2023.
Download or read book Nuclear Shapes and Shape Transitions written by and published by . This book was released on 1983 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Variety of Nuclear Shapes written by J. D. Garrett and published by . This book was released on 1988 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume consists of texts of a series of lectures presented at the International Conference on Nuclear Shapes held at Aghia Pelaghia on the Greek island of Crete, June 29 to July 3, 1987. The premise of this conference was to summarize state of the art information pertaining to the shape of the atomic nucleus from a variety of experimental and theoretical backgrounds as diverse as e.g. electron scattering, atomic spectroscopy and high-spin nuclear spectroscopy.
Download or read book International Conference on Nuclear Shapes and Nuclear Structure at Low Excitation Energies written by Michel Vergnes and published by Atlantica Séguier Frontières. This book was released on 1994 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Role of Nuclear Shapes in Nuclear Structure from the Perspective of the Daresbury Tandem written by and published by . This book was released on 1993 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: In specific regions of the nuclear periodic chart, large multipole moments are observed and the low-lying excitations have a rotational character. These features are understood if the nuclei in question are assumed to have a stable deformation, i.e., a non-spherical distribution of the nuclear matter. In other (transitional) regions the quasi-rotational bands are present; they are strongly coupled to low-lying vibrational modes. Those nuclei are best understood in terms of small static deformations but large dynamic fluctuations around local equilibria. As a matter of fact, the vast majority of nuclei are deformed; even in those which are spherical or almost spherical, the dynamical couplings to shape vibrations are crucial. The issue of nuclear deformation is many-faceted. If the nuclear shape (nuclear mean field) is deformed, characteristic excitation modes are present, such as rotations and vibrations built upon the non-spherical equilibrium. Through the particle-core coupling, nuclear deformations can dramatically influence the single-particle properties of nucleons moving in the average nuclear potential. Many experimental investigations using the Daresbury Tandem were related in one way or another to the physics of nuclear shapes. Fundamental discoveries from Daresbury include the observation of superdeformed structures in rapidly rotating nuclei, the observation of identical ({open_quotes}twinned{close_quotes}) rotational bands, various studies of structural changes induced by very fast rotation (band-crossings, band-terminations), the observation of the oblate-deformed {open_quotes}dipole{close_quotes} bands, studies of reflection-asymmetric shapes, studies of (quasimolecular) cluster configurations in light nuclei, and many, many others. The author reviews the forefront research at Daresbury from the global perspective; the common denominator being the nuclear shape deformation.
Download or read book Nuclear Physics written by National Research Council and published by National Academies Press. This book was released on 1999-03-31 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dramatic progress has been made in all branches of physics since the National Research Council's 1986 decadal survey of the field. The Physics in a New Era series explores these advances and looks ahead to future goals. The series includes assessments of the major subfields and reports on several smaller subfields, and preparation has begun on an overview volume on the unity of physics, its relationships to other fields, and its contributions to national needs. Nuclear Physics is the latest volume of the series. The book describes current activity in understanding nuclear structure and symmetries, the behavior of matter at extreme densities, the role of nuclear physics in astrophysics and cosmology, and the instrumentation and facilities used by the field. It makes recommendations on the resources needed for experimental and theoretical advances in the coming decade.
Download or read book Evolution of Nuclear Shapes at High Spins written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The dynamic electric quadrupole (E2) moments are a direct reflection of the collective aspects of the nuclear wave functions. For this, Doppler-shift lifetime measurements have been done utilizing primarily the recoil-distance technique. The nuclei with neutron number N approx. 90 possess many interesting properties. These nuclei have very shallow minima in their potential energy surfaces, and thus, are very susceptible to deformation driving influences. It is the evolution of nuclear shapes as a function of spin or rotational frequency for these nuclei that has commanded much interest in the lifetime measurements discussed here. There is growing evidence that many deformed nuclei which have prolate shapes in their ground states conform to triaxial or oblate shapes at higher spins. Since the E2 matrix elements along the yrast line are sensitive indicators of deformation changes, measurements of lifetimes of these states to provide the matrix elements has become the major avenue for tracing the evolving shape of a nucleus at high spin. Of the several nuclei we have studied with N approx. 90, those to be discussed here are /sup 160,161/Yb and 158Er. In addition, the preliminary, but interesting and surprising results from our recent investigation of the N = 98 nucleus, 172W are briefly discussed. 14 refs., 5 figs.
Download or read book The Nuclear Many Body Problem written by Peter Ring and published by Springer Science & Business Media. This book was released on 2004-03-25 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt: Study Edition
Download or read book Cancer Biology and the Nuclear Envelope written by Eric C. Schirmer and published by Springer Science & Business Media. This book was released on 2014-02-22 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Nuclear envelope (NE) defects have been linked to cancer biology since the mid-1800s, but it was not until the last few years that we have begun to understand these historical links and to realize that there are myriad ways that the NE impacts on tumorigenesis. The NE is a complex double membrane system that encloses the genome while providing structural support through the intermediate filament lamin polymer and regulating protein/ mRNA trafficking and signaling between the nucleus and cytoplasm via the nuclear pore complexes (NPCs). These functions already provide some mechanisms for NE influences on cancer biology but work in the past few years has elucidated many others. Lamins and many recently identified NE transmembrane proteins (NETs) have been now shown to function in DNA repair, regulation of cell cycle and signaling, apoptosis, cell migration in metastasis and nuclear architecture and morphology. This volume presents a comprehensive overview of the wide range of functions recently identified for NE proteins and their relevance in cancer biology, providing molecular mechanisms and evidence of their value as prognostic and diagnostic markers and suggesting new avenues for the treatment of cancer. Indeed some of these recent links are already yielding promising therapies, such as the current clinical trial of selective inhibitors of the nuclear export factor exportin in certain types of leukemia, melanoma and kidney cancer."
Download or read book Nuclear Structure Physics written by Amritanshu Shukla and published by CRC Press. This book was released on 2020-10-21 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear structure Physics connects to some of our fundamental questions about the creation of universe and its basic constituents. At the same time, precise knowledge on the subject has lead to develop many important tools of human kind such as proton therapy, radioactive dating etc. This book contains chapters on some of the crucial and trending research topics in nuclear structure, including the nuclei lying on the extremes of spin, isospin and mass. A better theoretical understanding of these topics is important beyond the confines of the nuclear structure community. Additionally, the book will showcase the applicability and success of the different nuclear effective interaction parameters near the drip line, where hints for level reordering have already been seen, and where one can test the isospin-dependence of the interaction. The book offers comprehensive coverage of the most essential topics, including: • Nuclear Structure of Nuclei at or Near Drip-Lines • Synthesis challenges and properties of Superheavy nuclei • Nuclear Structure and Nuclear models - Ab-initio calculations, cluster models, Shell-model/DSM, RMF, Skyrme • Shell Closure, Magicity and other novel features of nuclei at extremes • Structure of Toroidal, Bubble Nuclei, halo and other exotic nuclei These topics are not only very interesting from theoretical nuclear physics perspective but are also quite complimentary for ongoing nuclear physics experimental program worldwide. It is hoped that the book chapters written by experienced and well known researchers/experts will be helpful for the master students, graduate students and researchers and serve as a standard & uptodate research reference book on the topics covered.
Download or read book Proceedings of the International Symposium on Exotic Nuclear Shapes written by International Symposium on Exotic Nuclear Shapes 1, 1997, Debrecen and published by . This book was released on 1998 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Physics written by National Research Council and published by National Academies Press. This book was released on 2013-02-25 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal goals of the study were to articulate the scientific rationale and objectives of the field and then to take a long-term strategic view of U.S. nuclear science in the global context for setting future directions for the field. Nuclear Physics: Exploring the Heart of Matter provides a long-term assessment of an outlook for nuclear physics. The first phase of the report articulates the scientific rationale and objectives of the field, while the second phase provides a global context for the field and its long-term priorities and proposes a framework for progress through 2020 and beyond. In the second phase of the study, also developing a framework for progress through 2020 and beyond, the committee carefully considered the balance between universities and government facilities in terms of research and workforce development and the role of international collaborations in leveraging future investments. Nuclear physics today is a diverse field, encompassing research that spans dimensions from a tiny fraction of the volume of the individual particles (neutrons and protons) in the atomic nucleus to the enormous scales of astrophysical objects in the cosmos. Nuclear Physics: Exploring the Heart of Matter explains the research objectives, which include the desire not only to better understand the nature of matter interacting at the nuclear level, but also to describe the state of the universe that existed at the big bang. This report explains how the universe can now be studied in the most advanced colliding-beam accelerators, where strong forces are the dominant interactions, as well as the nature of neutrinos.
Download or read book Evolution of Nuclear Shapes in 157 sup 161 written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The population distributions of the entry states, the entry lines E* versus multiplicity, the energy spectra and the angular distributions of the continuum .gamma.-rays as a function of multiplicity in 157−sup 161/Yb from the reactions of 136 MeV and 149 MeV 2°Ne with 144Nd and 146Nd have been investigated with a 4pi multidetector system gated with a Ge detector. The observed entry lines and .gamma.-decay modes indicate change for N = 87 - 9l Yb isotopes suggests an evolution of nuclear shapes from prolate at low spins to particle aligned oblate structure for 157Yb and 158Yb followed by the onset of high-K bands built on largely deformed oblate states at increasingly higher spin between 38 and 50 n with increasing neutron number for 157−sup 161/Yb. Furthermore evidence for an evolution to triaxial shape at I approx. = 50 for 158Yb was found. 23 references.
