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Journal de Physique Lettres 40, 8 (1979) 181-184
New experimental results supporting the hypothesis of the excitation of collective modes in the 40Ca + 40Ca reaction
H. Tricoire1, P. Colombani, C. Gerschel, D. Paya, N. Perrin1, L. Valentin1, N. Frascaria1, J.P. Garron1, C. Stéphan1

Steps in the γ-ray multiplicity as function of the excitation energy have been observed in coincidence with the incompletely relaxed part of the energy spectra of fragments emitted in the reaction 40Ca + 40Ca at 400 MeV. Excitation energies and angular dependence of these variations suggest that they are correlated with the excitation of high energy collective modes through a rather direct process in the early stages of the reaction. l-values of this excitation mode are discussed.
1 :  IPNO - Institut de Physique Nucléaire d'Orsay
Physique/Articles anciens

Physique/Physique Nucléaire Expérimentale
gamma ray spectra – heavy ion nucleus reactions – nuclear collective states and giant resonances – nuclei with mass number 39 to 58 – collective modes – sup 40 Ca+ sup 40 Ca reaction – gamma ray multiplicity
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