Seb. Cavallaro
Istituto Nazionale di Fisica Nucleare
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Lettere Al Nuovo Cimento | 1982
N. Arena; Seb. Cavallaro; G. Fazio; G. Giardina; F. Mezzanares
SummaryThe αd bidimensional spectra for the7Li(3He, ααd) reaction at
Lettere Al Nuovo Cimento | 1983
N. Arena; C. Barbagallo; Seb. Cavallaro; P. D’Agostino; G. Fazio; G. Giardina; F. Mezzanares
Nuovo Cimento Della Societa Italiana Di Fisica A-nuclei Particles and Fields | 1989
N. Arena; Seb. Cavallaro; P. D’Agostino; Giovanni G. Fazio; G. Giardina; A. Italiano; F. Mezzanares; M. Herman; M. Lombardi
E_{{}^3He} = 2.5
Physical Review Letters | 1986
N. Arena; Seb. Cavallaro; Giovanni G. Fazio; G. Giardina; A. Italiano; F. Mezzanares
Physical Review Letters | 1986
N. Arena; Seb. Cavallaro; Giovanni G. Fazio; G. Giardina; A. Italiano; F. Mezzanares
and 5 MeV, at various detection angles, have been measured. The peak corresponding to an ad relative energy of about 5.7 MeV, found in the spectra, has been analysed. By taking this peak to be mainly contributed by the13D16Li state at 5.7 MeV, the values of the excitation energy and of the width of this state are given.
Physical Review C | 1997
S. Pirrone; S. Aiello; N. Arena; Seb. Cavallaro; S. Femino; G. Lanzalone; G. Politi; F. Porto; S. Romano; S. Sambataro
SummaryThe dα bidimensional spectra for the7Li(3He, αd)α reaction at E3He = = 2.5 MeV have been measured. The 4.3 MeV6Li state contribution has been isolated from the other products of the reaction. The value of (1.6±0.3) MeV found for its width is, within the experimental errors, in line with those deduced from the6Li(d, d’) and6Li(p, pα)d reactions, but it is a factor of about 3 larger than the ones measured in the7Li(3He, αd)α and6Li(e, e’) experiments.
Few-body Systems | 1991
N. Arena; Seb. Cavallaro; P. DAgostino; A. D'Arrigo; G. Fazio; G. Giardina; A. Italiano; Rocco Palamara; A. Taccone
SummaryThe αα bidimensional spectra of the6Li(3He, αp)α reaction atE(3He)=2.5 MeV were analysed. The peak energyE* and the Γ width of the5Lig.s. nucleus were deduced. Each energy spectrum was fitted by an incoherent sum of the contributions coming from the g.s. and the first excited state of the5Li nucleus. A test was performed to verify whether experimental data could be fitted by a single-levelR-matrix calculation.RiassuntoSono stati analizzati gli spettri bidimensionali αα della reazione6Li(3He, αp) α ad energia incidente di 2.5 MeV e sono state misurate l’energia di piccoE* e l’ampiezza Γ dello stato fondamentale del5Li. Ogni spettro energetico è stato trattato con una somma incoerente dei contributi dovuti allo stato fondamentale ed al primo stato eccitato del5Li. Utilizzando la matriceR, è stato eseguito un fit dei dati sperimentali allo scopo di verificare se lo spettro energetico del5Li potesse essere riprodotto solo con l’ausilio di un singolo livello.РезюмеАнализируются двумерные спектры αα из реакции6Li(3He, αp) α приE (3He)=2.5 МэВ. Определяются положение максимальной энергииE* и ширины Γ для основного состояния5Li. Каждый энергетический спектр представляется в виде некогерентной сумму вкладов от основного состояния и первого возбужденного состояния ядер5Li. ИспользуяR-матрицу, предпринимается попытка объяснения экспериментальных данных, если предположить, что энергетический спектр может быть воспроизведен с помощью толяко одного уровня.
Nuovo Cimento Della Societa Italiana Di Fisica A-nuclei Particles and Fields | 1993
N. Arena; Seb. Cavallaro; A. D’Arrigo; Giovanni G. Fazio; G. Giardina; A. Italiano; A. Taccone; Duong Quoc Hung; Vladislav S. Olkhovsky
The analog of the 4.7-MeV state of the /sup 9/Be nucleus has been observed in its mirror /sup 9/B by the reaction /sup 10/B(/sup 3/He, ..cap alpha..)/sup 9/B(..cap alpha..) /sup 5/Li (g.s.) at E( /sup 3/He) = 2.3 and 5.0 MeV. The excitation energy and width of the state have been deduced. The value of 1.5 +- 0.3 MeV found for the width is in line with the value deduced by the reaction /sup 7/Li(/sup 3/He,n) /sup 9/B, but it is larger by a factor of about 4 than the one measured by the proton following the ..beta../sup +/ decay of the /sup 9/C nucleus.
Physical Review C | 1989
N. Arena; Seb. Cavallaro; A. D’Arrigo; G. Fazio; G. Giardina; A. Italiano; M. Herman; M. Lombardi
The analog of the 4.7-MeV state of the /sup 9/Be nucleus has been observed in its mirror /sup 9/B by the reaction /sup 10/B(/sup 3/He, ..cap alpha..)/sup 9/B(..cap alpha..) /sup 5/Li (g.s.) at E( /sup 3/He) = 2.3 and 5.0 MeV. The excitation energy and width of the state have been deduced. The value of 1.5 +- 0.3 MeV found for the width is in line with the value deduced by the reaction /sup 7/Li(/sup 3/He,n) /sup 9/B, but it is larger by a factor of about 4 than the one measured by the proton following the ..beta../sup +/ decay of the /sup 9/C nucleus.
Physical Review C | 1989
N. Arena; Seb. Cavallaro; A. D’Arrigo; Giovanni G. Fazio; G. Giardina; A. Italiano; M. Herman; M. Lombardi
Velocity spectra of evaporation residues produced in the {sup 35}Cl+{sup 12}C reaction have been measured at bombarding energies of 125, 140, and 154 MeV using time-of-flight techniques. These distributions were used to identify evaporation residues and to separate complete fusion and incomplete fusion components. The results show the presence of small contributions of incomplete fusion components which appear to be due to a cluster transfer reaction mechanism. Angular distributions and total and complete fusion evaporation residue cross sections were extracted at 70, 90, 110, 125, 140, and 154 MeV. The complete fusion cross sections and the deduced critical angular momenta are compared with other experimental data and the predictions of existing models. {copyright} {ital 1997} {ital The American Physical Society}