Excitation of Giant Resonances in Intermediate Energy Heavy-ion Reactions PDF Download
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Author: Ricardo A. Broglia
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Ricardo A. Broglia
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Book Description
We briefly explore how large cross sections for excitation of both isoscalar and isovector giant multipole resonances which can be obtained using intermediate energy heavy-ion reactions can be utilized in photon-decay coincidence experiments to provide new information on subjects ranging from basic nuclear structure properties to resonance damping and pre-compound decay. We also discuss experiments in which photon-decay techniques are used as a tag to isolate and identify very weakly excited modes, enabling us to explore such diverse subjects as hadronic excitation of the giant dipole resonance, the distribution of isovector quadrupole strength in 2°8Pb, and the excitation of two-phonon giant resonance strength. 25 refs., 12 figs.
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Languages : en
Pages :
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The role of intermediate energy heavy ions in the study of giant multipole resonances is explored, with emphasis on gamma decay coincidence experiments. Experiments on 2°8Pb bombarded by 84 MeV/nucleon 17O are discussed and compared with earlier work at 22 MeV/nucleon. The role of Coulomb excitation in the 84 MeV/nucleon data is emphasized and some consequences for study of isovector resonance strength are explored. A comparison of the excitation and decay of the isovector giant dipole resonance in 2°8Pb and 2°9Bi excited with 84 MeV/nucleon 17O scattering is presented. 35 refs., 16 figs., 1 tab.
Author: M. N. Harakeh
Publisher: Oxford Studies in Nuclear Phys
ISBN: 9780198517337
Category : Science
Languages : en
Pages : 658
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Book Description
Giant resonances are collective excitations of the atomic nucleus, a typical quantum many-body system. The study of these fundamental modes has in many respects contributed to our understanding of the bulk behavior of the nucleus and of the dynamics of non-equilibrium excitations. Although the phenomenon of giant resonances has been known for more than 50 years, a large amount of information has been obtained in the last 10 years. This book gives an up-to-date, comprehensive account of our present knowledge of giant resonances. It presents the experimental facts and the techniques used to obtain that information, describes how these facts fit into theoretical concepts and how this allows to determine various nuclear properties which are otherwise difficult to obtain. Included as an introduction is an overview of the main facts, a short history of how the field has developed in the course of time, and a discussion of future perspectives.
Author: Jose Diaz
Publisher: World Scientific
ISBN: 9814550868
Category :
Languages : en
Pages : 626
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Book Description
These proceedings treat the production of high energy gamma rays and particles (mesons and dileptons) in heavy ion reactions from energies of about 30 MeV·A to a few GeV·A, and its application to the study of the Nuclear Equation of State from both the experimental and theoretical points of view. Giant resonances, intensity interferometry, meson fotoproduction and applications of intermediate energy heavy ion beams are also discussed.
Author: Klaus Albrecht Eberhard
Publisher: Springer
ISBN:
Category : Collisions (Nuclear physics)
Languages : en
Pages : 492
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Author:
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ISBN:
Category :
Languages : en
Pages :
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Inelastic scattering of medium energy heavy ions provides very large cross sections and peak-to-continuum ratios for excitation of giant resonances. For energies above about 50 MeV/nucleon, giant resonances are excited primarily through Coulomb excitation, which is indifferent to isospin, thus providing a good probe for the study of isovector giant resonances. The extremely large cross sections available from heavy ion excitation permit the study of rare decay modes of the giant resonances. In particular, recent measurements have been made of the photon decay of giant resonances following excitation by 22 and 84 MeV/nucleon 17O projectiles. The singles results at 84 MeV/nucleon yield peak cross sections for the isoscalar giant quadrupole resonance and the isovector giant dipole resonance of approximately 0.8 and 3 barns/sr, respectively. Data on the ground state decay of the isoscalar giant quadrupole and isovector giant dipole resonances are presented and compared with calculations. Decays to low-lying excited states are also discussed. Preliminary results from an experiment to isolate the 2°8Pb isovector quadrupole resonance using its gamma decay are presented. 22 refs., 19 figs., 1 tab.
![Investigations of the Isovector Giant Dipole Resonance in 208Pb and 40Ca by (p, P'[gamma]) at 200 MeV and of the GDR X GDR Excitation in 208Pb by Intermediate-energy Heavy Ions PDF](https://books.google.com/books/content/images/frontcover/wvAQtwAACAAJ?fife=w80-h100)
Author: Don H. Olive
Publisher:
ISBN:
Category : Calcium
Languages : en
Pages : 174
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Book Description
The goal of this dissertation in to provide a systematic study of the nuclear excitation of the giant dipole resonance (GDR) using medium-energy light ions and lower-energy heavy ions, where the Coulomb excitation of the resonances is small. Also, the Coulomb excitation of multiphonon giant resonances by intermediate-energy heavy ions will be examined.
Author: Josef Speth
Publisher: World Scientific
ISBN: 9814602795
Category : Science
Languages : en
Pages : 648
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Book Description
This is the most recent and complete review on giant resonances in nuclei. It includes electric as well as magnetic collective states and a detailed discussion on the excitation mechanisms and the decay properties is given.
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Category :
Languages : en
Pages :
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Book Description
Experimental measurements of electric giant multipole resonances are discussed. The parameters of the giant quadrupole resonance are now firmly established by an extensive set of measurements. The GQR is providing a significant influence in other areas of nuclear physics. The monopole resonance has now been established and its observation has provided the first direct measure of the nuclear compressibility. A strong case for the existence of a giant octupole resonance is now being made through a variety of hadron reactions. However, the supply of giant multipole resonances has not been exhausted. The newer techniques such as higher energy proton scattering, charge exchange reactions, heavy-ion scattering and pion reactions offer considerable hope for identifying new resonances during the next few years.
