Jc. Wang et al., Energy correlations between fragments and light charged particles in reaction of 25MeV/u(40) Ar+In-115, HIGH EN P N, 25(2), 2001, pp. 115-120
Citations number
17
Categorie Soggetti
Physics
Journal title
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
The correlations between the emitted fragments at theta (lab) = 15 degrees
and the light charged particles(LCPs) at the close geometry configuration i
n the reaction of 25MeV/u Ar-40 + In-115 were measured. The energy correlat
ions between fragments (4 less than or equal toZ(f)less than or equal to 14
) and the LCPs including proton, deuterium, tritium and cu particle as well
as the energy spectra of the LCPs were obtained. The result shows the exis
tence of sequential decay mechanism. It is found that the peak position of
angular correlation is at the small angles and the most probable correlatio
n angle is at 2 degrees or so; The peak positions of the two components in
the energy spectra of LCPs increase gradually with the mass of correlated p
artner; The lighter primary products are more easier to be excited and deca
y to IMFs and the LCPs. In the sequential decay, the yield of the LCPs with
more heavier mass is higher than that of the lighter LCPs. The result reve
als that the total correlation yield ratios summed over the fragments of Z(
f) = 4-14 are 1:1.3:1. 78:7. 57 for proton, deuterium, tritium and ct parti
cles, respectively.