Nuclear Collisions from the Mean-field Into the Fragmentation Regime, Volume 112
Claude DÚtraz, P. Kienle, SocietÓ italiana di fisica
North-Holland, 1991 - Science - 521 pages
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.
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A fast presentation of the various methods for temperature measure
Temperature andor excitation energy measurement from decay prod
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analysis angle angular associated assumed average beam bombarding energies calculations central channel charge cluster collisions compared correlation corresponding Course critical cross-section curve decay defined degrader density dependence detected detector determined discussed distribution edited effects emission emitted evaporation example excitation energy expected experiment experimental field Figure final fission flow fragments function given gives heavy impact increasing indicates interaction intermediate isotope lead Lett light loss mass matter mean measured mechanism method MeV/u momentum multiplicity neutron Nucl nuclear nuclei nucleons observed obtained parameter particles percolation photon Phys Physics pion position possible present probability production projectile properties quantity range reaction region relation relative represent respectively scaling selected separation shape shown in fig shows space spectra statistical target temperature theory thermal tion transfer values velocity yield