18
G. Chaudhuri et al.
Fig. 2.5 Same as in Fig. 2.4, but the fragmenting systems are Z = 28 and N = 30 (a) and A = 58
(b)
Fig. 2.6 Variation of entropy (blue-dashed lines) and dM/dT (red solid lines) with temperature
from CTM for fragmenting systems having Z = 82and N = 126 (a) and for hypothetical system
of one kind of particle with no Coulomb interaction of mass number A = 208 (b). To draw S and
dM/dT in the same scale, S is normalized by a factor of 1/20 for Z = 82 and N = 126 system and
1/50 for hypothetical system of one kind of particle
The multiplicity of the intermediate mass fragments (M I M F ) in heavy-ion collisions strongly confirms the process of multifragmentation [3]. It is an important
observable of multifragmentation, which is measured in the experiment, sometimes,
instead of the total multiplicity M. Therefore, we wanted to perform a similar test on
the derivative of M I M F . We have plotted the variation of M I M F and its temperature
derivative with temperature for the system Z = 82, N = 126 in Fig. 2.7, and compared
d M I M F /dT with C V . M I M F and d M I M F /dT display a similar behavior as that of the
total multiplicity and its derivative except for the fact that the peak position of its
derivative does not coincide with that of C V . This is expected because the calculation
of C V involves all the fragments irrespective of their mass or charge, but in M I M F ,
only selected fragments are included.
Last but not least, we would like to study the effect of secondary decay on the
excited fragments formed after multifragmentation. In a heavy-ion collision, when
a nucleus breaks up through the process of nuclear multifragmentation, the resulting composites are called primary fragments. The primary fragments are excited in
general and lose excitation through sequential two-body decay, and thus change the
total multiplicity. The final cold fragments, called secondary fragments, are detected
G. Chaudhuri et al.
Fig. 2.5 Same as in Fig. 2.4, but the fragmenting systems are Z = 28 and N = 30 (a) and A = 58
(b)
Fig. 2.6 Variation of entropy (blue-dashed lines) and dM/dT (red solid lines) with temperature
from CTM for fragmenting systems having Z = 82and N = 126 (a) and for hypothetical system
of one kind of particle with no Coulomb interaction of mass number A = 208 (b). To draw S and
dM/dT in the same scale, S is normalized by a factor of 1/20 for Z = 82 and N = 126 system and
1/50 for hypothetical system of one kind of particle
The multiplicity of the intermediate mass fragments (M I M F ) in heavy-ion collisions strongly confirms the process of multifragmentation [3]. It is an important
observable of multifragmentation, which is measured in the experiment, sometimes,
instead of the total multiplicity M. Therefore, we wanted to perform a similar test on
the derivative of M I M F . We have plotted the variation of M I M F and its temperature
derivative with temperature for the system Z = 82, N = 126 in Fig. 2.7, and compared
d M I M F /dT with C V . M I M F and d M I M F /dT display a similar behavior as that of the
total multiplicity and its derivative except for the fact that the peak position of its
derivative does not coincide with that of C V . This is expected because the calculation
of C V involves all the fragments irrespective of their mass or charge, but in M I M F ,
only selected fragments are included.
Last but not least, we would like to study the effect of secondary decay on the
excited fragments formed after multifragmentation. In a heavy-ion collision, when
a nucleus breaks up through the process of nuclear multifragmentation, the resulting composites are called primary fragments. The primary fragments are excited in
general and lose excitation through sequential two-body decay, and thus change the
total multiplicity. The final cold fragments, called secondary fragments, are detected