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Languages : en
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One of the goals of heavy ion reaction studies is to understand the fragmentation of hot nuclei. The LBL/GSI Plastic Ball detector system has been used to achieve a very high solid angle for detection of light and medium-heavy fragments emitted in 200 Mev/A Au + Au and Au + Fe reactions. The simultaneous measurement of almost all of the nucleons and nuclei resulting from each collision allows an estimation of the total charged particle multiplicity and hence the impact parameter. By choosing subsets of the data corresponding to a peripheral or central collision, the assumptions inherent in various models of nuclear fragmentation can be tested. 3 refs., 3 figs.
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Category :
Languages : en
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Book Description
One of the goals of heavy ion reaction studies is to understand the fragmentation of hot nuclei. The LBL/GSI Plastic Ball detector system has been used to achieve a very high solid angle for detection of light and medium-heavy fragments emitted in 200 Mev/A Au + Au and Au + Fe reactions. The simultaneous measurement of almost all of the nucleons and nuclei resulting from each collision allows an estimation of the total charged particle multiplicity and hence the impact parameter. By choosing subsets of the data corresponding to a peripheral or central collision, the assumptions inherent in various models of nuclear fragmentation can be tested. 3 refs., 3 figs.
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Category :
Languages : en
Pages :
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Experimental results are presented on the production of light particles (A
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Category : Power resources
Languages : en
Pages : 544
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Author: Claude Détraz
Publisher: North Holland
ISBN:
Category : Science
Languages : en
Pages : 554
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Book Description
At first sight the topic dealt with in this book may seem very technical and specialized. However it aims at presenting one very fundamental aspect of modern nuclear physics. At low incident energies, the collision of two nuclei is governed by the rearrangement of individual nucleons within the average mean field created by all of them. At high energies, the wavelength of nucleons is so short that they essentially experience individual nucleon-nucleon collisions without much influence of collective nuclear effects. Very interesting and enlightening phenomena occur when the velocity of the colliding nuclei is of the same order of magnitude as the velocity of nucleons within the nuclei. Up until recently beams of nuclei accelerated to the Fermi energy and above were not available to allow for an efficient study of that transition regime. Within a few years spectacular progress has been made to clarify the main issues, formulate the operating concepts and put order in the growing body of experimental results. The contributions in this book present the current status of this new field. They go from the study of the thermodynamics of bound nuclear systems to some remarkable signatures of the collision process. Some new features of nuclear structure which are revealed in collisions at the Fermi energy are also presented.
Author: C. K. Gelbke
Publisher:
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Category :
Languages : en
Pages :
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Author: Tong Qing Li
Publisher:
ISBN:
Category : Heavy ion collisions
Languages : en
Pages : 364
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Author: Hisashi Horiuchi
Publisher: World Scientific
ISBN: 9814544728
Category :
Languages : en
Pages : 554
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The recent rapid innovations in supercomputer technology are changing the concepts of numerical calculations employed in solving a wide variety of nuclear many-body problems. The purpose of the XVII RCNP International Symposium on Innovative Computational Methods in Nuclear Many-Body Problems (INNOCOM97) was to discuss the frontiers of various computational methods and to exchange ideas in wide fields of nuclear physics. The subjects discussed at the symposium covered almost all the areas of nuclear physics.
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Languages : en
Pages :
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Investigation of the fragmentation mechanism requires the measurement of complicated observables. To identify what part of the reacting system gives rise to the fragments, it would be useful to tag them as participants or spectators. A large acceptance for all the reaction products and an event-by-event measurement of the fragment multiplicity is required to distinguish fragment formation via sequential emission from a large equilibrated system and multifragmentation. In order to address whether fragments are formed early or late in the collision, information about the dynamical evolution of the reaction is necessary. This can be provided by study of the global properties of the events. This paper discusses experimental techniques applicable to studying fragmentation processes. 25 refs., 8 figs.
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723236525
Category :
Languages : en
Pages : 150
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An optical model description of energy and momentum transfer in relativistic heavy-ion collisions, based upon composite particle multiple scattering theory, is presented. Transverse and longitudinal momentum transfers to the projectile are shown to arise from the real and absorptive part of the optical potential, respectively. Comparisons of fragment momentum distribution observables with experiments are made and trends outlined based on our knowledge of the underlying nucleon-nucleon interaction. Corrections to the above calculations are discussed. Finally, use of the model as a tool for estimating collision impact parameters is indicated. Khandelwal, Govind S. and Khan, Ferdous Unspecified Center ATOMIC COLLISIONS; ENERGY LEVELS; FRAGMENTATION; HEAVY IONS; RELATIVISTIC PARTICLES; ENERGY TRANSFER; MOMENTUM TRANSFER; SCATTERING...
Author: Symposium on Central Collisions and Fragmentation Processes (1987, Denver, Colo.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 672
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