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Carlin Filho, N.
Sao Paulo Univ., SP (Brazil). Inst. de Fisica1987
Sao Paulo Univ., SP (Brazil). Inst. de Fisica1987
AbstractAbstract
[en] The identification of reaction mechanisms in light heavy-ion collisions has been performed within the framework of the three body kinematics, by means of angular correlation measurements. The 16O+27Al, 16+O+28Si and 10B+27Al reactions were investigated at Laboratory bombarding energies of 64 MeV, 64 and 48 MeV, respectively. Contributions of transfer-reemission and projectile sequential decay mechanisms were identified by the analysis of the relative kinetic energy of the final state components, excitation energies of the system at the intermediate stages, and also by means of fits to theoretical predictions for the angular correlations. (author)
[pt]
Atraves da uma analise baseada na cinematica de tres corpos, uma identificacao de mecanismos em reacoes entre ions pesados foi efetuada a partir da medida de correlacoes angulares. Foram estudados os istemas 16O+ 27Al, 16O + 28Si e 10B + 10B + 27Al nas energias de bombardeio de 64, 64 e 48 MeV, respectivamente. A partir de previsoes teoricas para as correlacoes angulares, da analise de espectros de energia cinetica do movimento relativo entre os constituintes do estado final e energia de excitacao dos nucleos intermediarios, constatamos a presenca dos mecanismos de transferencia seguida de evaporacao e decaimento sequencial do projetil. (autor)Original Title
Identificacao de mecanismos em reacoes entre ions pesados atraves da medida de correlacoes angulares
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Source
1987; 177 p; Tese (Ph.D.).
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Miscellaneous
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AbstractAbstract
[en] The methods for studying nuclear reactions at intermediate energies are described. The characteristics of nuclear reactions are related to results obtained by each method. (M.C.K.)
Original Title
Mecanismos de reacao em energias intermediarias
Primary Subject
Source
Sociedade Brasileira de Fisica, Sao Paulo, SP (Brazil); 382 p; 1990; p. 86-99; 13. Workshop on Nuclear Physics in Brazil; Caxambu, MG (Brazil); 2-6 Sep 1990
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Crema, E.; Acquadro, J.C.; Liguori Neto, R.; Carlin Filho, N.; Coimbra, M.M.
Sao Paulo Univ. (Brazil). Inst. de Fisica1988
Sao Paulo Univ. (Brazil). Inst. de Fisica1988
AbstractAbstract
[en] Seven elastic angular distributions and the fusion excitation functions for the 14N + 27AL, 14N + 28Si and 14N + 29Si systems with in the energy range 1.1< ECM/VB<2.5 are measured. The experimental fusion cross sections were superestimated by the simple one-dimensional barrier penetration model, with a ''frozen'' nuclear proximity potential. Through an effective variation of barrier height, the energy dependent corrections necessary to fit the data are calculated these corrections showed an ''anomalous'' behaviour in the above-barrier energy region. The corresponding imaginary potential parts were then constructed through the use of dispersion relation. (author)
[pt]
Medem-se sete distribuicoes angulares elasticas e funcoes de excitacao de fusao para os sistemas 14N+27AL, 14N+28Si e 14N+29Si dentro da faixa de energia 1.1 < ECM/VB<2.5. As secoes de choque de fusao experimentais foram superestimadas pelo modelo de penetracao de barreira unidimensional simples, com um potencial de proximidade nuclear ''congelado''. Atraves de uma variacao efetiva da altura da barreira, as correcoes dependentes da energia necessarias para ajustar os dados sao calculadas. Essas correcoes mostraram um comportamento ''anomalo'' na regiao de energia acima da barreira. As partes do potencial imaginario correspondentes foram entao construidos atraves do uso de relacao de dispersao. (L.C.)Primary Subject
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Jan 1988; 29 p
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AbstractAbstract
[en] The actual development stage of Pelletron accelerator to study heavy ion reactions, nuclear structures and applied nuclear physics is presented. The construction of acceleration systems able to provide beams of several mass and energies up to 20 MeV/A, is discussed, describing acceleration structures and implemented systems. (M.C.K.)
Original Title
Projeto Linac- estagio atual
Primary Subject
Source
Sociedade Brasileira de Fisica, Sao Paulo, SP (Brazil); 382 p; 1990; p. 117-130; 13. Workshop on Nuclear Physics in Brazil; Caxambu, MG (Brazil); 2-6 Sep 1990
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Miscellaneous
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AbstractAbstract
No abstract available
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Porto, V. (ed.); Sao Paulo Univ. (Brazil). Inst. de Fisica; 89 p; 1985; p. 46; Published in summary form only.
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AbstractAbstract
No abstract available
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Porto, V. (ed.); Sao Paulo Univ. (Brazil). Inst. de Fisica; 89 p; 1985; p. 46; Published in summary form only.
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AbstractAbstract
No abstract available
Original Title
Estados altamente excitados do 26Mg
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Source
5. Workshop on Nuclear Physics in Brazil; Itatiaia, RJ (Brazil); 8-11 Sep 1982; Published in summary form only.
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Journal Article
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Conference
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Revista Brasileira de Fisica; ISSN 0374-4922; 
; (vol. especial); p. 132
; (vol. especial); p. 132
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AbstractAbstract
No abstract available
Original Title
Efeito do momento angular critico no espectro de evaporacao de um nucleo composto
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33. Annual Meeting of the Brazilian Society for the Advancement of Science; Salvador, Brazil; 8 - 15 Jul 1981; Published in summary form only.
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Journal Article
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Cienc. Cult. (Sao Paulo) Supl; v. 33(7); p. 276-277
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AbstractAbstract
No abstract available
Original Title
Parametros de densidade de niveis para os nucleos 22 Na, (sub 23,24, 25,26) Mg e (sub 25,26,27,28,29) Al
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35. Annual Meeting of the Brazilian Society for the Advancement of Science; Belem, PA (Brazil); 6-13 Jul 1983; Published in summary form only.
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Journal Article
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Conference
Journal
Cienc. Cult. (Sao Paulo) Supl; v. 35(7); p. 308-309
Country of publication
ALUMINIUM ISOTOPES, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, DISTRIBUTION, ENERGY RANGE, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, HEAVY ION REACTIONS, ISOTOPES, LIGHT NUCLEI, MAGNESIUM ISOTOPES, MEV RANGE, MINUTES LIVING RADIOISOTOPES, NUCLEAR REACTIONS, NUCLEI, ODD-EVEN NUCLEI, ODD-ODD NUCLEI, RADIOISOTOPES, SECONDS LIVING RADIOISOTOPES, SODIUM ISOTOPES, STABLE ISOTOPES, TARGETS, YEARS LIVING RADIOISOTOPES
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Coimbra, M.M.; Carlin Filho, N.; Toledo, A.S. de
Proceedings of the 6. Workshop on Nuclear Physics in Brazil1983
Proceedings of the 6. Workshop on Nuclear Physics in Brazil1983
AbstractAbstract
No abstract available
Original Title
Analise do espectro de evaporacao de um nucleo composto
Primary Subject
Source
Sociedade Brasileira de Fisica, Sao Paulo; 110 p; 1983; p. 1-2; 6. Workshop on Nuclear Physics in Brazil; Itatiaia, RJ (Brazil); 1983; Available from Centro de Informacoes Nucleares, Brasil; Published in summary form only.
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Miscellaneous
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