Download or read book Empirical Proton neutron Interaction Strengths written by and published by . This book was released on 1989 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Empirical Proton neutron Interaction Strengths written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An empirical technique to extract proton-neutron interaction energies for specific protons and neutrons in a wide variety of nuclei is described. The results shed light on the roles of the monopole and quadrupole components of the p-n interaction, their orbit dependence, the microscopic basis of the N/sub p/N/sub n/ scheme, and the saturation of collectively observed in deformed nuclei. 3 refs., 4 figs.
Download or read book Empirical Proton neutron Interaction Energies and Nuclear Structure written by and published by . This book was released on 1990 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Empirical proton-neutron (p-n) interaction energies are extracted for all even-even nuclei with well-known binding energies using a simple double difference equation. Three features are disclosed: a systematic decrease of p-n interaction strengths (excepting N=Z nuclei) with increasing A, large interaction strengths for N=Z nuclei, and microstructure in doubly magic and deformed regions. Shell model calculations are used to explain the behavior of N=Z and other nuclei in the sd shell. Arguments based on orbit occupancy are introduced to explain microstructure effects in heavier nuclei and are given quantitative support by simple microscopic Nilsson and Shell Model calculations. The analysis sheds light on the relative roles of monopole and quadrupole components of the p-n interaction in determining nuclear structure. 19 refs., 5 figs.
Download or read book The Empirical Residual Proton neutron Interaction and the Onset of Collectivity in Nuclei written by and published by . This book was released on 1991 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The critical role of the residual valence p-n interaction in the development and evolution of collectivity, and the onset of shape/phase transitions, is discussed from the standpoint of phenomenological approaches, and empirical extraction of individual p-n interaction strengths, and simple model calculation of them. 22 refs., 18 figs.
Download or read book Valence Proton neutron Interaction Strengths from Double Binding Energy Differences written by and published by . This book was released on 1996 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Empirical p-n interaction strengths have been extracted from experimental mass data using double-difference binding energy equations. The especially strong interactions for self-conjugate nuclei will be discussed as well as microstructure found for deformed and in doubly magic regions. Valence correlation Schemes provide a basis to comment on the stability of medium mass near-drip-line nuclei and superheavy elements.
Download or read book Empirical Estimates of the Proton neutron Interaction and Diabolical Points written by and published by . This book was released on 1990 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of constant-N contours in the ([omega], [lambda]) plane is demonstrated both for establishing diabolical points and for studying regularities and fluctuations in the spectrum of single-particle states. Likewise the average properties and fluctuations of empirical proton-neutron interactions, obtained from double differentials of the total energy with respect to N and Z, are discussed for the ground states of all even-even nuclei with N> 40 and as a function of the rotational frequency for the lowest even-spin, positive-parity decay sequence of deformed rare earth nuclei. 25 refs., 3 figs.
Download or read book The Proton neutron Interaction and Nuclear Collectivity written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A review is given of several aspects, and empirical consequences, of the p-n interaction as it relates to the structure, phase transitions and collectivity of medium and heavy nuclei. The N/sub p/N/sub n/ scheme is reviewed as background material while the emphasis centers on a discussion of a related quantity, the P factor, and on the relationship of the integrated strength of the p-n interaction to the empirically observed ''saturation'' of B(E2) values in the mid-shell regions of deformed nuclei. 19 refs., 13 figs.
Download or read book Empirical Proton neutron Interaction Energies and Nuclear Structure written by and published by . This book was released on 1990 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Empirical Residual Proton neutron Interaction and the Onset of Collectivity in Nuclei written by and published by . This book was released on 1991 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Of Unstable Nuclear Beams Topics On The Structural And Interactions Of Nuclei Far From The Stability Line Proceedings Of The International Workshop written by Carlos A Bertulani and published by World Scientific. This book was released on 1997-04-11 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume, the structure and reactions of radioactive nuclei are described. The relevance of halo nuclei to nuclear astrophysics is stressed in different contributions. Other topics included are: three-body aspects of light neutron-rich nuclei, elastic scattering, charge exchange and Coulomb excitation, fragment moment distribution, mass at half-life measurement and electromagnetism-induced fission.
Download or read book Interacting Boson Model from Energy Density Functionals written by Kosuke Nomura and published by Springer Science & Business Media. This book was released on 2013-02-11 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes a novel and robust way of deriving a Hamiltonian of the interacting boson model based on microscopic nuclear energy density functional theory. Based on the fact that the multi-nucleon induced surface deformation of finite nucleus can be simulated by effective boson degrees of freedom, observables in the intrinsic frame, obtained from self-consistent mean-field method with a microscopic energy density functional, are mapped onto the boson analog. Thereby, the excitation spectra and the transition rates for the relevant collective states having good symmetry quantum numbers are calculated by the subsequent diagonalization of the mapped boson Hamiltonian. Because the density functional approach gives an accurate global description of nuclear bulk properties, the interacting boson model is derived for various situations of nuclear shape phenomena, including those of the exotic nuclei investigated at rare-isotope beam facilities around the world. This work provides, for the first time, crucial pieces of information about how the interacting boson model is justified and derived from nucleon degrees of freedom in a comprehensive manner.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Further Studies on the Scattering of Neutrons by Protons written by L. Goldstein and published by . This book was released on 1948 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 486 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 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 Physics of Unstable Nuclei written by Dao Tien Khoa and published by World Scientific. This book was released on 2008 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume features contributions by the leading authorities on the physics of unstable nuclei. It provides an important updated source in the nuclear physics literature for the researchers and post-graduates studying nuclear physics with unstable beams around the world. The focus is on the new experimental facilities for the production of unstable beams and on the latest developments in microscopic theories of nuclear structure and reactions.
Download or read book Proton Therapy Physics written by Harald Paganetti and published by CRC Press. This book was released on 2016-04-19 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proton Therapy Physics goes beyond current books on proton therapy to provide an in-depth overview of the physics aspects of this radiation therapy modality, eliminating the need to dig through information scattered in the medical physics literature. After tracing the history of proton therapy, the book summarizes the atomic and nuclear physics background necessary for understanding proton interactions with tissue. It describes the physics of proton accelerators, the parameters of clinical proton beams, and the mechanisms to generate a conformal dose distribution in a patient. The text then covers detector systems and measuring techniques for reference dosimetry, outlines basic quality assurance and commissioning guidelines, and gives examples of Monte Carlo simulations in proton therapy. The book moves on to discussions of treatment planning for single- and multiple-field uniform doses, dose calculation concepts and algorithms, and precision and uncertainties for nonmoving and moving targets. It also examines computerized treatment plan optimization, methods for in vivo dose or beam range verification, the safety of patients and operating personnel, and the biological implications of using protons from a physics perspective. The final chapter illustrates the use of risk models for common tissue complications in treatment optimization. Along with exploring quality assurance issues and biological considerations, this practical guide collects the latest clinical studies on the use of protons in treatment planning and radiation monitoring. Suitable for both newcomers in medical physics and more seasoned specialists in radiation oncology, the book helps readers understand the uncertainties and limitations of precisely shaped dose distribution.
