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Doctoral Thesis
DOI
10.11606/T.43.1987.tde-20022014-155113
Document
Author
Full name
Vera Lucia Moura Franzin
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1987
Supervisor
Committee
Hussein, Mahir Saleh (President)
Donangelo, Raul
Nemes, Maria Carolina
Pereira, Dirceu
Toledo, Alejandro Szanto de
Title in Portuguese
Descrição unicanal das reações de fusão
Keywords in Portuguese
Fusão de íons pesados
Fusão nuclear
Abstract in Portuguese
Usando um modelo de um canal efetivo, o qual contem efeitos de acoplamento de canais através da presença de um potencial de polarização dependente da energia, nós estudamos, em energias abaixo da barreira, as reações de fusão dos sistemas A1 ANTPOT. Ni+ A2 ANTPOT. Ni e 16ANTPOT. O + A ANTPOT. Sm. Com o auxilio de uma relação de dispersão inversa, obtivemos a parte imaginária desse potencial em termos da parte principal da integral envolvendo a parte real do mesmo. A consistência deste método foi verificada através da comparação entre este potencial empírico e o potencial de polarização efetivo determinado a partir de um acoplamento específico de canais. Foram também calculados o primeiro e segundo momentos da distribuição de momentos angulares da seção de choque parcial de fusão.
Title in English
One-channel description of fusion reactions
Keywords in English
Nuclear fusion of heavy ions
Abstract in English
Using an effective one channel model which contains channel coupling effects through the presence of an inclusive energy dependent polarization potential, we studied sub - barrier fusion of the systems A1Ni + A2Ni and 16O+ASm . With the aid of an inverse dispersion relation, we obtained the imaginary part of this potential. The consistency of this method is c hecked by comparing this empirical polarization potential with the one determined from the explicit consideration of a specific channel coupling. The first and the second moments of the angular momentum distribuition of the partial fusion cross-section were calculated also.
 
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39873Franzin.pdf (21.29 Mbytes)
Publishing Date
2014-02-20
 
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