FIZIKA B 15 (2006)  2, 51-56

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MULTI-PARTICLE CORRELATION AMONG GREY PARTICLES EMITTED IN NUCLEUS-NUCLEUS INTERACTIONS

M. T. HUSSEIN, N. M. HASSAN, N. M. SADEK and J. ELSWEEDY

Physics Department, Faculty of Science, Cairo University, 12613 Giza, Egypt

Received 10 April 2005;  Revised manuscript received 6 October 2006
Accepted 11 October 2006    Online 1 December 2006

The short range correlation among emitted knock on nucleons from heavy ion collisions is used to reveal the dynamic characteristics of the reactions at high energy. Two- and three-particle correlations are considered in angular space to explain the emission of gray particles from collectively excited states of the nucleus as a Fermi liquid drop. Positive correlation is detected only among particles emitted in the extreme backward direction which is the coldest domain. It is interpreted as direct non-statistical emission (splashing) of nucleons via the dynamical distortion of the Fermi surface accompanying the collective motion.

PACS numbers: 25.70.Pq
UDC 539.172, 25.75.-q

Keywords: heavy ion collisions, gray particles, particle correlation

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