Some Nuclear Reaction Studies Of Astrophysical Interest

The Compound-Nuclear Reaction and Related Topics (CNR*) international workshop series was initiated in 2007 with a meeting near Yosemite National Park. It has since been held in Bordeaux (2009), Prague (2011), Sao Paulo (2013), Tokyo (2015), and Berkeley, California (2018). The workshop series brings together experts in nuclear theory, experiment, data evaluations, and applications, and fosters interactions among these groups. Topics of interest include: nuclear reaction mechanisms, optical model, direct reactions and the compound nucleus, pre-equilibrium reactions, fusion and fission, cross section measurements (direct and indirect methods), Hauser-Feshbach theory (limits and extensions), compound-nuclear decays, particle and gamma emission, level densities, strength functions, nuclear structure for compound-nuclear reactions, nuclear energy, nuclear astrophysics, and other topics. This peer-reviewed proceedings volume presents papers and poster summaries from the 6th International Workshop on Compound-Nuclear Reactions and Related Topics CNR*18, held on September 24-28, 2018, at Lawrence Berkeley National Lab, Berkeley, CA.

Nuclear astrophysics as it stands today is a fascinating science. Even though, compared to other scientific fields, it is a young discipline which has developed only in this century, it has answered many questions concerning the under standing of our cosmos. One of these great achievements was the concept of nucleosynthesis, the creation of the elements in the early universe in interstellar matter and in stars. Nuclear astrophysics has continued, to solve many riddles of the evolution of the myriads of stars in our cosmos. This review volume attempts to provide an overview of the current status of nuclear astrophysics. Special emphasis is given to the interdisciplinary nature of the field: astronomy, nuclear physics, astrophysics and particle physics are equally involved. One basic effort of nuclear astrophysics is the collection of ob servational facts with astronomical methods. Laboratory studies of the nuclear processes involved in various astrophysical scenarios have provided fundamen tal information serving both as input for and test of astrophysical models. The theoretical understanding of nuclear reaction mechanisms is necessary, for example, to extrapolate the experimentally determined reaction rates to the thermonuclear energy range, which is relevant for the nuclear processes in our cosmos. Astrophysical models and calculations allow us to simulate how nuclear processes contribute to driving the evolution of stars, interstellar matter and the whole universe. Finally, elementary particle physics also plays an important role in the field of nuclear astrophysics, for instance through weak interaction processes involving neutrinos.

A broad range of topics of current interest are discussed, from nuclear structure at the edge of stability to nuclear astrophysics and cosmic ray physics at the highest energies. Both the state of the art and basic background information are presented with a particular emphasis on interrelated research interests. The writers are all active scientists who enjoy the highest international reputation. They cover a range of problems of nuclear structure, in particular those concerning exotic nuclei and their decay modes, their relevance to nuclear reaction chains in stellar burning processes at various astrophysical sites, and as yet unsolved questions concerning the origin, acceleration mechanism, energy spectrum and elemental composition of high energy cosmic rays. Readership: Postgraduate physicists interested in the development of modern radioactive beam facilities, large array gamma ray and cosmic ray detectors, and new theoretical tools.

These peer-reviewed NIC XV conference proceedings present the latest major advances in nuclear physics, astrophysics, astronomy, cosmochemistry and neutrino physics, which provide the necessary framework for a microscopic understanding of astrophysical processes. The book also discusses future directions and perspectives in the various fields of nuclear astrophysics research. In addition, it also includes a limited number of section of more general interest on double beta decay and dark matter.

An Introduction to Experimental Nuclear Reactions is a book with a concise and simple approach to the subject of experimental nuclear physics. The subject being very technical, it is dealt with in a lucid way so that the reader can grasp the concept and later gain hands-on experience while doing fieldwork. In this book, theoretical, experimental and instrumentation aspects are covered with an emphasis on accelerator-based techniques, which form the basis for the subject of experimental nuclear physics. Other books on similar topics either concentrate on the physics aspects or are more focussed on the instrumentation and radiation detection techniques while accelerator-related concepts are less explained. One of the main standalone features of the book is its to-the-point approach so that the beginner is not lost in the never-ending details. This book discusses the following aspects: Basic introduction to nuclear reactions Two- and three-body kinematics Accelerator-based experimental techniques Basic aspects of the accelerator and accessories Vacuum physics Radiation detector physics and its associated electronics Theoretical modelling and errors This book is mainly intended for students who aspire to pursue a career in experimental nuclear physics research or work in a nuclear accelerator laboratory. Chinmay Basu, PhD, is a researcher in the field of experimental nuclear physics, and his present interests are in the field of low-energy nuclear astrophysics. He is a professor and head of an accelerator facility at the Saha Institute of Nuclear Physics, Kolkata, India.

The proceedings of this conference should be of interest to nuclear physicists (researchers, university and college professors, graduate and post-graduate students). FINUSTAR 3 covered a wide spectrum of research activities in nuclear structure, nuclear astrophysics and nuclear reactions that due to common instrumentation and research facilities have been overlapping strongly over the last years. The topics in nuclear structure, astrophysics and reactions, experimental and theoretical, covered by FINUSTAR 3 are as follows: Nuclear structure at the extremes Collective phenomena and phase transitions in nuclei Exotic excitations Synthesis and structure of the heaviest elements Nuclear masses and ground state properties Ab-initio calculations and the shell model Mean field theories, cluster models and molecular dynamics Scattering and reaction dynamics at low and intermediate energies Nuclear reactions off stability and indirect methods Neutrinos in nuclear astrophysics and astro-particle physics Nuclear astrophysics (Big-Bang, s-, r- and p-process & nuclide production) Radioactive and exotic relativistic beams Facilities and instrumentation for the future

This volume documents an important event in the World Year of Physics 2005 and a continuation of the traditional international summer schools that have taken place in Romania regularly since 1964. On one hand, the study of exotic nuclei seeks answers about the structure and interaction of unique finite quantum mechanical many-body systems. On the other, it provides data that have an impact on the understanding of the origin of the elements in the Universe. The contributions, written by outstanding professors from prestigious research centers over the world, provide the reader with both comprehensive reviews and the most recent results in the field. Large experimental facilities are discussed together with future research projects. The book offers insights into how experiments in terrestrial nuclear physics laboratories may be combined with observations in outer space to enlarge our basic knowledge. Sample Chapter(s). Chapter 1: Research on Neutron Clusters (1,195 KB). Contents: Exotic Nuclei: Research on Neutron Clusters (F M Marques); Neutron Transfer Studied with a Radioactive Beam of 24 Ne, Using TIARA at SPIRAL (W Catford et al.); Rare Isotopes INvestigations at GSI (RISING) Using Relativistic Ion Beams (J Jolie et al.); Mass Formula from Normal to Hypernuclei (C Samanta); Exotic Nuclear Structures: Exotic Phenomena in Medium Mass Nuclei (A Petrovici); NUSTAR at FAIR. Nuclear Structure Research at GSI and the Future (G Muenzenberg); From Super-Radiance to Continuum Shell Model (V Zelevinski); New Methods for the Exact Solution of the Nuclear Eigenvalue Problem Beyond Mean Field Approaches (N Lo Iudice et al.); Q-Phonon Approach for Low-Lying 1 - Two-Phonon States in Spherical Nuclei (V V Voronov et al.); Analytic Description of the Phase Transition from Octupole Deformation to Octupole Vibrations (D Bonatsos et al.); Three-Body Models in Nuclear Physics (P Descouvemont); Properties of Low-Lying States: Shape Parameters and Proton-Neutron Symmetry (V Werner); Shell Model Nuclear Level Densities (M Horoi); Exotic Decays, Clusters and Superheavy Nuclei: Nuclear Structure and Double Beta Decay (J Suhonen); Systematics of Proton Emission (D S Delion et al.); Synthesis of Superheavy Elements at SHIP (S Hofmann et al.); Synthesis of Heaviest Elements Using a Gas-Filled Recoil Separator at RIKEN (K Morita); Fission Valleys and Heavy Ion Decay Modes (D N Poenaru et al.); Dynamics of Mass Asymmetry in Dinuclear Systems (W Scheid et al.); Exotic Matter in Nuclei and Stars. Neutrinos: Clusters of Matter and Antimatter: A Mechanism for Cold Compression (W Greiner); BRAHMS Experiment Quest for Early Universe Phases of Hadronic Matter (Z Majka); Strange Matter in Core-Collapse Supernova (J Horvath); Neutrino Astrophysics: Gamma Ray Bursts (G C McLaughlin); Neutrino Emission from Neutron Stars (D G Yakovlev et al.); New Achievements in Neutrino Properties (S Stoica); High Energy Cosmic Rays: The Origin of Cosmic Rays (P Biermann); The Mystery of the Highest Energies in the Universe (H Rebel); The Cosmic Ray Experiment KASCADE-GRANDE (I M Brancus et al.); Prospects for the Detection of High-Energy Cosmic Rays Using Radio Techniques (Ad van den Berg); Nucleosynthesis and Nuclear Physics for Astrophysics: Explosive Nucleosynthesis: Supernovae, Classical Novae, and X-Ray Bursts (J Jose); Experimental Approach to Nuclear Reactions of Astrophysical Interest Involving Radioactive Nuclei (C Angulo); Background Studies at the LUNA Underground Accelerator Facility (Zs Fulop); Thoughts about Two of the Important Reactions in Nuclear Astrophysics (L Buchmann); Recent Experimental Studies of Nuclear Astrophysics Using Intermediate-Energy Exotic Beams (T Motobayashi); An Indirect Method Using ANCs in Nuclear Astrophysics (R E Tribble et al.); Recent Applications of the Trojan-Horse Method in Nuclear Astrophysics (C Spitaleri); Nuclear Astrophysics Experiments at CIAE (W Liu et al.); Global Reaction Models Relevant to the p Process (S V Harissopoulos); Large Facilities: TRIUMF OCo Canada's National Laboratory for Particle and Nuclear Physics (L Buchmann); Status of the AGATA Project (E Farnea); Research at ISOLDE and the Path to Eurisol (P A Butler); and other papers. Readership: Academics, Universities and research centres in physics. Undergraduate and graduate students, taking nuclear physics classes, research professionals in nuclear physics and astrophysics."