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Survey Of Low Energy Heavy Ion Reactions Mechanisms
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Book Synopsis Survey of Low Energy Heavy Ion Reactions Mechanisms by : Aage Winther
Download or read book Survey of Low Energy Heavy Ion Reactions Mechanisms written by Aage Winther and published by . This book was released on 1983 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Survey of Low Energy Heavy Ion Reaction Mechanisms 2100 KØBENHAVN Ø by : Aage (Niels Bohr Institutet) Winther
Download or read book Survey of Low Energy Heavy Ion Reaction Mechanisms 2100 KØBENHAVN Ø written by Aage (Niels Bohr Institutet) Winther and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theoretical Approaches of Heavy Ion Reaction Mechanisms by : M. Martinot
Download or read book Theoretical Approaches of Heavy Ion Reaction Mechanisms written by M. Martinot and published by Elsevier. This book was released on 2016-06-03 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical Approaches of Heavy Ion Reaction Mechanisms provides information pertinent to heavy ion reactions and nuclear fission at low energies. This book discusses the features of the time-dependent solution of the Kramer–Chandrasekhar equation. Organized into 27 chapters, this book begins with an overview of the deexcitation process of a highly excited nucleus by means of its decay into two fragments. This text then presents a microscopic description to extract the characteristics features of the collective dynamics of the fission process at low energy. Other chapters consider nuclear fission as a transport process over the fission barrier. This book discusses as well the microscopic foundations of the phenomenological collective models. The final chapter deals with the composition of the baryons and mesons in terms of gluons and quarks. This book is a valuable resource for nuclear and high energy physicists. Experimentalists, theoreticians, and research workers will also find this book useful.
Book Synopsis Studies of Complex Fragment Emission in Heavy Ion Reactions by :
Download or read book Studies of Complex Fragment Emission in Heavy Ion Reactions written by and published by . This book was released on 1992 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our work involves the study of intermediate energy heavy-ion nuclear reactions. This work has two foci. On the one hand, we desire to learn about the properties of nuclear matter under abnormal conditions, in this energy domain, predominately low densities. This purpose runs abreast of the second, which is the study of the relevant reaction mechanisms. The two objectives are inexorably linked because our experimental laboratory for studying nuclear matter properties is a dynamic one. We are forced to ask how nuclear matter properties, such as phase transitions, are reflected in the dynamics of the reactions. It may be that irrefutable information about nuclear matter will not be extracted from the reaction work. Nevertheless, we are compelled to undertake this effort not only because it is the only game in town and as yet we do not know that information cannot be extracted, but also because of our second objective. The process leads to an understanding of the reaction mechanism themselves and therefore to the response characteristics of finite, perhaps non-equilibrium, strongly interacting systems. Our program has been: To study energy, mass, and angular momentum deposition by studying incomplete fusion reactions. To gain confidence that we understand how highly excited systems decompose by studying all emissions from the highly excited systems. To push these kinds of studies into the intermediate energy domain, with excitation function studies. And attempt to learn about the dynamics of the decays using particle-particle correlations. In the last effort, we have decided to focus on simple systems, where we believe, definitive statements are possible. These avenues of research share a common theme, large complex fragment production.
Book Synopsis Studies of Complex Fragment Emission in Heavy Ion Reactions. Progress Report, January 1, 1993--September 15, 1993 by :
Download or read book Studies of Complex Fragment Emission in Heavy Ion Reactions. Progress Report, January 1, 1993--September 15, 1993 written by and published by . This book was released on 1993 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of intermediate-energy heavy-ion nuclear reactions is reported. This work has two foci: the properties of nuclear matter under abnormal conditions, in this energy domain, predominately low densities and the study of the relevant reaction mechanisms. Nuclear matter properties, such as phase transitions, are reflected in the dynamics of the reactions. The process leads to an understanding of the reaction mechanism themselves and therefore to the response characteristics of finite, perhaps non-equilibrium, strongly interacting systems. The program has the following objectives: to study energy, mass, and angular momentum deposition by studying incomplete fusion reactions; to gain confidence in the understanding of how highly excited systems decompose by studying all emissions from the highly excited systems; to push these kinds of studies into the intermediate energy domain (where intermediate mass fragment emission is not improbable) with excitation function studies; and to learn about the dynamics of the decays using particle-particle correlations. The last effort focuses on simple systems, where definitive statements are possible. These avenues of research share a common theme, large complex fragment production. It is this feature, more than any other, which distinguishes the intermediate energy domain.
Book Synopsis Studies of Complex Fragment Emission in Heavy Ion Reactions. Progress Report, January 1, 1993--September 1, 1995 by :
Download or read book Studies of Complex Fragment Emission in Heavy Ion Reactions. Progress Report, January 1, 1993--September 1, 1995 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This work involves the study of low and intermediate energy heavy-ion nuclear reactions. This work has two foci. First, the authors desired to learn about the properties of both nuclei and nuclear matter under abnormal conditions. Their efforts towards this end run abreast of those for their second focus which is the study of the relevant reaction mechanisms. The two objectives are inexorably linked because their experimental laboratory for studying nuclear properties is a dynamic one. Their task is to answer the questions of how nuclear and nuclear matter properties are reflected in the dynamics of the reactions. The second objective also has great intrinsic value in that they can anticipate improving upon their understanding of the reaction mechanism themselves and therefore to the response characteristics of finite, perhaps non-equilibrium, strongly interacting systems. The program has been: to study the dynamics of fusion reactions, specifically the dynamics of energy, mass, and angular momentum deposition. This work includes reactions near the Coulomb barrier, where fusion dominates the reaction cross section as well as higher energies where incomplete fusion reactions are the primary reactions. This includes the dynamics of fission, still the premier example of collective nuclear motion, as a function of excitation, spin, mass, and mass asymmetry. The authors push these kinds of studies into the intermediate energy domain, and where novel reaction scenarios are predicted. They have studied very central and peripheral collisions between very massive nuclei, and simplified projectile fragmentation reactions utilizing medium to light mass projectiles. The study of central collisions has shown us the importance of collective expansion. The study of peripheral collisions between very heavy nuclei has demonstrated the importance of dynamical production of fragments from the neck region.
Book Synopsis Studies of Complex Fragment Emission in Heavy Ion Reactions. Progress Report, January 1, 1990--August 5, 1992 by :
Download or read book Studies of Complex Fragment Emission in Heavy Ion Reactions. Progress Report, January 1, 1990--August 5, 1992 written by and published by . This book was released on 1992 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our work involves the study of intermediate energy heavy-ion nuclear reactions. This work has two foci. On the one hand, we desire to learn about the properties of nuclear matter under abnormal conditions, in this energy domain, predominately low densities. This purpose runs abreast of the second, which is the study of the relevant reaction mechanisms. The two objectives are inexorably linked because our experimental laboratory for studying nuclear matter properties is a dynamic one. We are forced to ask how nuclear matter properties, such as phase transitions, are reflected in the dynamics of the reactions. It may be that irrefutable information about nuclear matter will not be extracted from the reaction work. Nevertheless, we are compelled to undertake this effort not only because it is the only game in town and as yet we do not know that information cannot be extracted, but also because of our second objective. The process leads to an understanding of the reaction mechanism themselves and therefore to the response characteristics of finite, perhaps non-equilibrium, strongly interacting systems. Our program has been: To study energy, mass, and angular momentum deposition by studying incomplete fusion reactions. To gain confidence that we understand how highly excited systems decompose by studying all emissions from the highly excited systems. To push these kinds of studies into the intermediate energy domain, with excitation function studies. And attempt to learn about the dynamics of the decays using particle-particle correlations. In the last effort, we have decided to focus on simple systems, where we believe, definitive statements are possible. These avenues of research share a common theme, large complex fragment production.
Book Synopsis Nuclear Reaction And Beyond - Proceedings Of The International Workshop by : Gen-ming Jin
Download or read book Nuclear Reaction And Beyond - Proceedings Of The International Workshop written by Gen-ming Jin and published by World Scientific. This book was released on 2000-12-29 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume, the following topics are discussed: study of intermediate and low energy heavy ion collisions, nuclear structure at high spin, nuclei far from stability, radioactive ion beam physics and development of experimental facilities.
Book Synopsis Microscopic Approach to Heavy-ion Reactions by : Kirsten Vo-Phuoc
Download or read book Microscopic Approach to Heavy-ion Reactions written by Kirsten Vo-Phuoc and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heavy-ion reactions are affected by the nuclear structure of the reactants and other dynamical processes during the collision. Theoretical studies of such reactions lead to a clearer understanding of prohibitive mechanisms to heavy-ion fusion. One application of this is superheavy element formation, where quasifission is the major competing process to the formation of a compound nucleus in this region of the nuclear chart. Microscopic approaches that use mean field approximations, such as the time-dependent Hartree-Fock (TDHF) theory, have been increasingly used to study low energy heavy-ion reactions. In addition to reactions, nuclear structure properties can also be studied with microscopic theory. Such approaches do not require empirical knowledge of the nucleus and can be used as a predictive tool for studying structure or reactions involving exotic nuclei. In this thesis, TDHF is used to study nuclear vibrations and heavy-ion reactions at near barrier energies. The TDHF approach is applied first to a systematic study of low-lying octupole and quadrupole vibrational modes of {40-54}Ca isotopes. Then, fusion reactions are calcuated for Ca+Sn systems, using the barrier energy as the main observable. Fusion reactions are first calculated with no couplings (static HF calculations) before including all dynamics that the mean field approximation offers (TDHF calculations). The addition of dynamics often results in a lower fusion barrier compared to the static barrier, with the exception of systems involving the neutron rich {52,54}Ca projectiles. The difference in fusion barriers between the two sets of calculations are explored by considering couplings to vibrational states and transfer channels. To separate the effects of individual couplings, the coupled-channels approach is used with the HF calculations of the vibrational states as inputs. Such couplings account for most of the lowering of the static barrier. For the most neutron rich systems, coupling to vibrational states does not account for the dynamical barrier increase. Transfer channels, in particular proton pickup, are explored within TDHF and may play a role in this increased barrier energy. Following from fusion reactions, the factors and dynamics that may hinder fusion in heavier systems are studied in the reactions 48Ca, 50Ti, 52Cr, 54Fe, 56,64Ni, 58Zn+208Pb at energies ranging from 0% to 30% above the static HF barrier. Although most of these systems fuse at energies within this range, some systems reseparate for which emission of nucleons was apparent at scission point. The contact times were in most cases less than 10 zs and the attempt at $N/Z$ equilibration of these systems happen on fast time scales (1-2 zs). Larger amounts of mass transfer occur in systems with longer neck times and fewer magic numbers such as 34S+232Th and Cr+Pt systems that were also calculated for comparison. Further studies are required to better understand the role of shell effects as well as nucleon emission in quasifission reactions, and subsequently reactions leading to superheavy element formation.
Book Synopsis Heavy Ion Physics And Application - International Symposium by : Wenqing Shen
Download or read book Heavy Ion Physics And Application - International Symposium written by Wenqing Shen and published by World Scientific. This book was released on 1991-03-29 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings covers current research work by experts in the following aspects:
Book Synopsis Reflections And Directions In Low Energy Heavy-ion Physics: Celebrating Twenty Years Of Unisor And Ten Years Of The Joint Institute For Heavy Ion Research by : Joseph H Hamilton
Download or read book Reflections And Directions In Low Energy Heavy-ion Physics: Celebrating Twenty Years Of Unisor And Ten Years Of The Joint Institute For Heavy Ion Research written by Joseph H Hamilton and published by World Scientific. This book was released on 1993-07-31 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This symposium on Reflections and Directions in Low Energy Heavy-Ion Physics celebrates twenty years of the University Isotope Separator at Oak Ridge (UNISOR) and ten years of the Joint Institute for Heavy Ion Research (JIHIR). It reflects on the accomplishments in low energy heavy-ion science and emphasizes the new directions and opportunities to be explored with low energy heavy-ion facilities. It includes a special section devoted to structure theory and another emphasizing new research to result from facilities exhibiting radioactive ion beam capabilities, new generation recoil mass spectrometers and sophisticated gamma-ray detector arrays. With the participation of leading researchers in the field, the proceedings of this conference is a major reference work for graduate students and research workers in nuclear physics.
Book Synopsis Nuclear Interactions in High Energy Heavy Ions and Applications in Astrophysics. [Dept. of Physics and Astronomy, Louisiana State Univ., Baton Rouge]. by :
Download or read book Nuclear Interactions in High Energy Heavy Ions and Applications in Astrophysics. [Dept. of Physics and Astronomy, Louisiana State Univ., Baton Rouge]. written by and published by . This book was released on 1993 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective is to study the mechanisms and the energy dependence of heavy ion fragmentation by studying the reactions of heavy ion projectiles (e.g. [sup 4]He, [sup 16]O, [sup 20]Ne, [sup 28]Si, [sup 56]Fe) in a variety of targets (H, He, C, Si, Cu, Pb) and at a number of beam energies exceeding 0.1 GeV/nucleon. The results have application to questions in high-energy nuclear astrophysics. Most of the discussion is on low-energy [sup 16]O, [sup 28]Si data analysis. The description includes analysis procedures and techniques, detector calibrations, data selections and normalizations. Cross section results for the analysis are also presented. 83 figs., 6 tabs., 73 refs.
Book Synopsis Mechanisms of Heavy Ion Reactions from a Macroscopic Viewpoint by :
Download or read book Mechanisms of Heavy Ion Reactions from a Macroscopic Viewpoint written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics of Heavy Ion Induced Reactions by : BirBikram Singh
Download or read book Dynamics of Heavy Ion Induced Reactions written by BirBikram Singh and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presented in this book deals with the study of heavy ion reaction dynamics using the Dynamical Cluster-decay Model (DCM). DCM is used to study the decay of excited (hot and rotating) compound systems formed in low energy heavy ion reactions, including the deformations and orientations degrees of freedom for reactants/products. To study the ground state decays, the exotic cluster radioactivity, we have used the Pre-formed Cluster-decay Model (PCM), which also includes the deformation and orientation effects of daughter and cluster nuclei. We have studied the possible decay modes of various nuclear systems. The reaction dynamics of hot and rotating light as well as heavier compound systems at low energies have been studied extensively. It is relevant to mention here that the experimental studies have started analyzing the role of orientation degrees of freedom for deformed nuclei in the measured fusion-fission cross-sections, though the use/identification of the actually polarized nuclei is still to be realized. Such studies will help explore the yet unknown landscapes in order to approach towards the island of stability' and to extend the periodic table further.
Book Synopsis Heavy Ion Reactions by : Ricardo A. Broglia
Download or read book Heavy Ion Reactions written by Ricardo A. Broglia and published by CRC Press. This book was released on 2018-03-09 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combining elastic and inelastic processes with transfer reactions, this two-part volume explores how these events affect heavy ion collisions. Special attention is given to processes involving the transfer of two nucleons, which are specific for probing pairing correlations in nuclei. This novel treatment provides, together with the description of surface vibration and rotations, a unified picture of heavy ion reactions in terms of the elementary modes of nuclear excitation. Heavy Ion Reactions is essential reading for beginning graduate students as well as experienced researchers.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1979 with total page 1096 pages. Available in PDF, EPUB and Kindle. Book excerpt: