Angular Distributions from Heavy-ion-induced Fission

Angular Distributions from Heavy-ion-induced Fission PDF Author: Victor E. Viola
Publisher:
ISBN:
Category : Angular distribution (Nuclear physics).
Languages : en
Pages : 100

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Angular Distributions from Heavy-ion-induced Fission

Angular Distributions from Heavy-ion-induced Fission PDF Author: Victor E. Viola
Publisher:
ISBN:
Category : Angular distribution (Nuclear physics).
Languages : en
Pages : 100

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Angular Distributions from Heavy-Ion-Induced Fission (thesis).

Angular Distributions from Heavy-Ion-Induced Fission (thesis). PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Angular distributions of fission fragments from heavyion-induced nuclear reactions were studied. Targets of /sub 7//sub 9/Au/sup 1//sup 9//sup 7/ and / sub 8//sub 3/Bi/sup 2//sup 0//sup 9/ were bombarded wit h /sub 6/C/sup 1//sup 2/ / sub 7/N/sup 1//sup 4/ and /sub 8/O/sup 1//sup 6/ ions at energies of plus or minus 5.5to 10.4 Mev per nucleon. Both targets were also studied with /sub 5/B/ sup 1//sup 1/ at the maximum energy. It was observed that the ratio of 0 to 90 deg differential cross sections is much larger for heavy ions than for lighter projectiles. For a given heavy ion, this anisotropy was found to increase with bombarding energy and decrease with the value of Z/sup 2//A of the compound nucleus. There was no distinct evidence for a monotonic relationship between the anisotropy and the mass of the projectile. In this respect, nitrogen was characterized by somewhat lower anisotropies than the other ions. The data were interpreted within the theoretical framework proposed by Halpern and Strutinski and by Griffin to explain fission-fragment angular distributions at moderate energies. In general. these results can be described in terms of the large angular momenta and excitation energies associated with heavy-ion reactions. It is suggested that, on the average, the number of neutrons that are evaporated before fission increases as the atomic number of the compound nucleus decreases. (auth).

Energy-mass Distributions and Angular Momentum Effects in Heavy-ion-induced Fission

Energy-mass Distributions and Angular Momentum Effects in Heavy-ion-induced Fission PDF Author: Franz Plasil
Publisher:
ISBN:
Category : Angular momentum (Nuclear physics)
Languages : en
Pages : 142

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Nuclear Fission and Heavy-ion-induced Reactions

Nuclear Fission and Heavy-ion-induced Reactions PDF Author: Wolf-Udo Schröder
Publisher: Routledge
ISBN:
Category : Science
Languages : en
Pages : 552

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Lifetime Measurements for Heavy-ion-induced Fission by the Crystal-blocking Technique

Lifetime Measurements for Heavy-ion-induced Fission by the Crystal-blocking Technique PDF Author: J. U. Andersen
Publisher:
ISBN:
Category : Heavy ions
Languages : en
Pages : 66

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ANGULAR DISTRIBUTION OF FRAGMENTS FROM FISSION INDUCED BY HEAVYIONS IN GOLD AND BISMUTH.

ANGULAR DISTRIBUTION OF FRAGMENTS FROM FISSION INDUCED BY HEAVYIONS IN GOLD AND BISMUTH. PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 31

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We present the results of measurements of the angular distribution of fission fragments produced by irradiation of Au197 and Bi2°9 with various heavy ions. The projectiles, B11, C12, N14, and O16, had energies from a few MeV above the Coulomb barrier to 10.4 MeV per nucleon. The gross features of these results can be explained by use of a model and parameters that have been used by others to account for angular distributions of fission fragments from helium-ion bombardments. In detail, however, these results appear to indicate that the models used to predict the average value of the angular momentum of the compound nucleus give values too low near the Coulomb barrier. Furthermore, at high bombarding energies it is necessary to consider the fact that appreciable direct interaction is taking place.

Fission and Spallation in Nuclear Reactions Induced by Heavy Ions

Fission and Spallation in Nuclear Reactions Induced by Heavy Ions PDF Author: Glen Everett Gordon
Publisher:
ISBN:
Category : Nuclear fission
Languages : en
Pages : 156

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Angular Momentum in Heavy-ion Induced Fission Through the Study of Gamma-ray Cascades

Angular Momentum in Heavy-ion Induced Fission Through the Study of Gamma-ray Cascades PDF Author: Farrokh Avraham Dilmanian
Publisher:
ISBN:
Category : Angular momentum (Nuclear physics)
Languages : en
Pages : 548

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Angular Momentum Limitations in Heavy Ion-induced Fusion Reactions Leading to −p40−sCa and −p42−sCa

Angular Momentum Limitations in Heavy Ion-induced Fusion Reactions Leading to −p40−sCa and −p42−sCa PDF Author: Bruce Alan Harmon
Publisher:
ISBN:
Category : Angular momentum (Nuclear physics)
Languages : en
Pages : 446

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Fission And Properties Of Neutron-rich Nuclei - Proceedings Of The Second International Conference

Fission And Properties Of Neutron-rich Nuclei - Proceedings Of The Second International Conference PDF Author: H K Carter
Publisher: World Scientific
ISBN: 9814543071
Category : Science
Languages : en
Pages : 522

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Book Description
The Second International Conference on Fission and Properties of Neutron-Rich Nuclei continued the emphasis on fission models, fission processes, properties of neutron-rich nuclei and new directions. The responses to the conference were so extensive that 44 talks were presented in individual sessions and 35 more in two afternoons of parallel sessions. New insights and developments were discussed, including experimental and theoretical studies of ternary fission with correlated pairs with emission of a third nucleus such as helium-3, alpha particle, and beryllium-10; the structure of neutron-rich nuclei from spontaneous fission, heavy-ion-induced fission and knock-out reactions; comparisons of deep inelastic reactions and fission for production of neutron-rich nuclei; production of superheavy elements, including the discovery of element 114; experiments with radioactive beams; and proposals for new radioactive ion beam facilities.