Vol. 53, No. 3
September 1999
pp. 419-424

Fluctuations of the second order observables for dissipative processes in ¹⁹F +²⁷Al system

I BERCEANU ¹ , A ANDRONIC ¹ , M DUMA ¹ ,D MOISÁ ¹, M PETROVICI ¹ ,A POP ¹ ,V SIMION ¹, A DEL ZOPPO ² ,G D'ERASMO ^4;5 ,G IMM ´ E ^2;3 ,G LANZAN ` O ^2;3 , ¹ A PAGANO ^2;3 , A PANTALEO ⁴ and G RACITI ^2;3

¹National Institute for Physics and Nuclear Engineering, MG-6, Bucharest, Romania
²INFN, LNS-Catania, v. S. Sofia 44, I-95100, Catania, Italy
³Dipartimento di Fisica, Univ. di Catania, I-95129 Catania, Italy
⁴INFN, Sezione di Bari, v. Amendola 173, 70125 Bari, Italy
⁵Dipartimento di Fisica, Univ. di Bari, Italy

Abstract.

The excitation function (EF) data for dissipative processes in ¹⁹F +²⁷Al system in the incident energy interval from 113.5 to 130 MeV are used to obtain the dependence of the charge variance and of the interaction time as a function of the incident energy. Fluctuations are observed in the EFs of both these secondary observables. Their correlation is supported by a mechanism based on stochastic exchange of nucleons.

Keywords. Deep inelastic processes; excitation function; non-statistical fluctuations.

PACS Nos 25.70.Lm; 24.60.Ky

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