Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 56
Get Book Here
Book Description
The Heavy Ion Spectrometer System (HISS) at the LBL Bevalac provided a unique facility for measuring projectile fragmentation cross sections important in deconvolving the Galactic Cosmic Ray (GCR) source composition. The general characteristics of the apparatus specific to this application are described and the main features of the event reconstruction and analysis used in the TRANSPORT experiment are discussed.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 112
Get Book Here
Book Description
An experiment was conducted at the Lawrence Berkeley Laboratory to measure projectile fragmentation of relativistic heavy ions. Charge identification was obtained by the use of a Cerenkov Hodoscope operating above the threshold for total internal reflection, while velocity measurement was performed by use of a second set of Cerenkov radiators operating at the threshold for total internal reflection. Charge and mass resolution for the system was [sigma]{sub Z} = 0.2 e and [sigma]{sub A} = 0.2 u. Measurements of the elemental and isotopic production cross sections for the fragmentation of 4°Ar at 1.65{center dot}A GeV have been compared with an Abrasion-Ablation Model based on the evaporation computer code GEMINI. The model proves to be an accurate predictor of the cross sections for fragments between Chlorine and Boron. The measured cross section were reproduced using simple geometry with charge dispersions induced by zero-point vibrations of the giant dipole resonance for the prompt abrasion stage, and injecting an excitation energy spectrum based on a final state interaction with scaling factor E{sub fsi} = 38.8 MeV/c. Measurement of the longitudinal momentum distribution widths for projectile fragments are consistent with previous experiment and can be interpreted as reflecting the Fermi momentum distribution in the initial projectile nucleus. Measurement of the transverse momentum indicate an additional, unexplained dependence of the reduced momentum widths on fragment mass. This dependence has the same sign and similar slope to previously measured fragments of 139La, and to predictions based on phase-space constraints on the final state of the system.
Author: Craig Emerson Tull
Publisher:
ISBN:
Category :
Languages : en
Pages : 230
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 782
Get Book Here
Book Description
Author: Jerzy Bartke
Publisher: World Scientific
ISBN: 9810212313
Category : Science
Languages : en
Pages : 239
Get Book Here
Book Description
This book attempts to cover the fascinating field of physics of relativistic heavy ions, mainly from the experimentalist's point of view. After the introductory chapter on quantum chromodynamics, basic properties of atomic nuclei, sources of relativistic nuclei, and typical detector set-ups are described in three subsequent chapters. Experimental facts on collisions of relativistic heavy ions are systematically presented in 15 consecutive chapters, starting from the simplest features like cross sections, multiplicities, and spectra of secondary particles and going to more involved characteristics like correlations, various relatively rare processes, and newly discovered features: collective flow, high pT suppression and jet quenching. Some entirely new topics are included, such as the difference between neutron and proton radii in nuclei, heavy hypernuclei, and electromagnetic effects on secondary particle spectra.Phenomenological approaches and related simple models are discussed in parallel with the presentation of experimental data. Near the end of the book, recent ideas about the new state of matter created in collisions of ultrarelativistic nuclei are discussed. In the final chapter, some predictions are given for nuclear collisions in the Large Hadron Collider (LHC), now in construction at the site of the European Organization for Nuclear Research (CERN), Geneva. Finally, the appendix gives us basic notions of relativistic kinematics, and lists the main international conferences related to this field. A concise reference book on physics of relativistic heavy ions, it shows the present status of this field.
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 1420
Get Book Here
Book Description
Author: United States. Congress. House. Committee on Science and Technology. Subcommittee on Energy Research and Production
Publisher:
ISBN:
Category : Energy development
Languages : en
Pages : 1320
Get Book Here
Book Description
Author: R. Neugart
Publisher: CRC Press
ISBN: 9780750302623
Category : Science
Languages : en
Pages : 1056
Get Book Here
Book Description
Nuclei Far from Stability and Atomic Masses and Fundamental Constants 1992 presents a collection of 200 papers presented at two conferences that were held concurrently. Particular attention is paid to developments in the field of nuclear physics with energetic secondary beams and the increase of precision in the determination of atomic masses. Topics covered include nuclear spectroscopy and nuclear shapes, the heaviest elements, fission and cluster radioactivity, beta decay, coupling constants, neutrino mass, moments and radii, nuclei near the drip line and their structure, atomic masses, nuclear aspects in astrophysics, and experimental developments.
Author: Jens-Volker Kratz
Publisher: John Wiley & Sons
ISBN: 352765335X
Category : Science
Languages : en
Pages : 932
Get Book Here
Book Description
The third edition of this classic in the field is completely updated and revised with approximately 30% new content so as to include the latest developments. The handbook and ready reference comprehensively covers nuclear and radiochemistry in a well-structured and readily accessible manner, dealing with the theory and fundamentals in the first half, followed by chapters devoted to such specific topics as nuclear energy and reactors, radiotracers, and radionuclides in the life sciences. The result is a valuable resource for both newcomers as well as established scientists in the field.
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 738
Get Book Here
Book Description
Includes all works deriving from DOE, other related government-sponsored information and foreign nonnuclear information.
