60
P. Bansal et al.
Fig. 5.6 The energy dependence of the gas and liquid content for the reaction pairs having mass
asymmetry η = 0, 0.2, 0.4, 0.6, and 0.8. Various symbols are explained in the text
These reactions are simulated at incident energies between 120 and 600 AMeV. Here,
η is varied from 0 to 0.8 keeping total mass of the system fixed (A T OT = 100).
In Fig. 5.6, we display the incident energy dependence of gas and liquid contents
for η = 0to0.8 covering symmetric and asymmetric reactions. Open (solid) circles
correspond to the gas (liquid) content. From the figure, we see that the cross-over
energy is enhanced with increase in mass asymmetry. Also, we observe that the
sharp increment in cross-over energy is obtained when we go from η = 0.6 to 0.8.
The reason for this behavior is that for symmetric and nearly symmetric reactions,
there is more compression which drives the nuclear matter into the participant zone
and thus more free nucleons are emitted even at lower energies. However, for mass
asymmetric reaction partners, the number of nucleon–nucleon collisions are reduced
because of decreased compressional energy causing a suppressed emission of free
nucleons. Therefore, more energy is required to break the system into free nucleons
and thus, cross-over is obtained at higher energies.
P. Bansal et al.
Fig. 5.6 The energy dependence of the gas and liquid content for the reaction pairs having mass
asymmetry η = 0, 0.2, 0.4, 0.6, and 0.8. Various symbols are explained in the text
These reactions are simulated at incident energies between 120 and 600 AMeV. Here,
η is varied from 0 to 0.8 keeping total mass of the system fixed (A T OT = 100).
In Fig. 5.6, we display the incident energy dependence of gas and liquid contents
for η = 0to0.8 covering symmetric and asymmetric reactions. Open (solid) circles
correspond to the gas (liquid) content. From the figure, we see that the cross-over
energy is enhanced with increase in mass asymmetry. Also, we observe that the
sharp increment in cross-over energy is obtained when we go from η = 0.6 to 0.8.
The reason for this behavior is that for symmetric and nearly symmetric reactions,
there is more compression which drives the nuclear matter into the participant zone
and thus more free nucleons are emitted even at lower energies. However, for mass
asymmetric reaction partners, the number of nucleon–nucleon collisions are reduced
because of decreased compressional energy causing a suppressed emission of free
nucleons. Therefore, more energy is required to break the system into free nucleons
and thus, cross-over is obtained at higher energies.