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Master's Dissertation
DOI
10.11606/D.43.1987.tde-15042014-121513
Document
Author
Full name
Nemitala Added
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1987
Supervisor
Committee
Toledo, Alejandro Szanto de (President)
Passos, Emerson Jose Veloso de
Quacchia, Juan Carlos Acquadro
Title in Portuguese
Medida da secção de choque de fusão do sistema ANTPOT. 18 O + ANTPOT. 10 B e construção de uma câmara de ionização sensível a posição
Keywords in Portuguese
Câmara de ionização
Fusão completa
Abstract in Portuguese
O processo de fusão completa foi investigado para a reação ANTPOT. 18 O + ANTPOT 10 B dentro do intervalo de energia de bombardeio 29,0 Mev
Title in English
Measure of the shock section of fusion system 18 O + 10 B and construction of an sensitive ionization chamber in position.
Keywords in English
Complete fusion
Ionization Chamber
Abstract in English
The 18 O + 10 B within the bombarding energy range of 29,0 Mev < E LAB < 72,0 Mev, covering the 5° angular range. For this purpose, a high resolution position sensitive ionization chamber has been developed and constructed. Experimental results compared to model predictions and experimental systematics found in the literature allows to reject compound nucleus limitation to the fusion cross section up to energies as high as five times the coulomb barrier. Statistical model fits to the residues elementary distributions reveal a quite difuse partial fusion cross section in the angular momentum space. Systematic analysis of fusion barrier height (VB) and radius for neighbouring nuclei point out the importance of the nuclear matter diffuseness in the competition between the fusion and quasi-direct process. Calculations within this framework were performed.
 
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Publishing Date
2014-04-23
 
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