Two-fragment correlation functions have been measured for ^(40)Ar+^(197)Au collisions at E/A=25 MeV.Based on the three-body trajectory calculation,a mean emission time of T~450 fm/c for light fragments was extracted f...Two-fragment correlation functions have been measured for ^(40)Ar+^(197)Au collisions at E/A=25 MeV.Based on the three-body trajectory calculation,a mean emission time of T~450 fm/c for light fragments was extracted from the measured correlation functions.This result suggests that the sequential decay occurs at this energy.展开更多
Protons are emitted much more affluently in neutron-deficient system ^(40)Ar+^(112)Sn while triton emissions are greater in a neutron-rich system ^(40)Ar+^(124)Sn at incident energy of 30 MeV/u.Similar to neutron,prot...Protons are emitted much more affluently in neutron-deficient system ^(40)Ar+^(112)Sn while triton emissions are greater in a neutron-rich system ^(40)Ar+^(124)Sn at incident energy of 30 MeV/u.Similar to neutron,proton emission provied a dominant contribution to neutralize the system N/Z in the decay process of the hot nuclei.The emission of hydrogen isotopes with high energies is much enhanced in the ^(112)Sn system.The original temperature of the hot nuclei in the ^(40)Ar+^(112)Sn reaction is 5.8±0.3 MeV,about 0.7 MeV higher than 5.1±0.3 MeV as in the ^(40)Ar+^(124)Sn reaction.展开更多
The in-plane and out-of-plane emissions of light charged particles and intermediate mass fragments were measured for ^(40)Ar+^(159)Tb collisions at 30 MeV/nucleon.An in-plane enhancement was observed for mid-rapidity ...The in-plane and out-of-plane emissions of light charged particles and intermediate mass fragments were measured for ^(40)Ar+^(159)Tb collisions at 30 MeV/nucleon.An in-plane enhancement was observed for mid-rapidity light particles and fragments,indicating that a rotational effect exists in this reaction system.This enhancement increased with mass for light particles with Z≤2,but became nearly constant values for fragments with Z≥3.This enhancement was observed to increase strongly with increasing impact parameter.展开更多
基金Supported by the National Natural Science Foundation of Chinathe Foundation of the Chinese Academy of Sciences.
文摘Two-fragment correlation functions have been measured for ^(40)Ar+^(197)Au collisions at E/A=25 MeV.Based on the three-body trajectory calculation,a mean emission time of T~450 fm/c for light fragments was extracted from the measured correlation functions.This result suggests that the sequential decay occurs at this energy.
基金Supported by the One Hundred Talents Project and Major Subjects of the Chinese Academy of Sciences under Grant No.KJ95T-03。
文摘Protons are emitted much more affluently in neutron-deficient system ^(40)Ar+^(112)Sn while triton emissions are greater in a neutron-rich system ^(40)Ar+^(124)Sn at incident energy of 30 MeV/u.Similar to neutron,proton emission provied a dominant contribution to neutralize the system N/Z in the decay process of the hot nuclei.The emission of hydrogen isotopes with high energies is much enhanced in the ^(112)Sn system.The original temperature of the hot nuclei in the ^(40)Ar+^(112)Sn reaction is 5.8±0.3 MeV,about 0.7 MeV higher than 5.1±0.3 MeV as in the ^(40)Ar+^(124)Sn reaction.
基金Supported by the Science Foundation of the Chinese Academy of Sciences。
文摘The in-plane and out-of-plane emissions of light charged particles and intermediate mass fragments were measured for ^(40)Ar+^(159)Tb collisions at 30 MeV/nucleon.An in-plane enhancement was observed for mid-rapidity light particles and fragments,indicating that a rotational effect exists in this reaction system.This enhancement increased with mass for light particles with Z≤2,but became nearly constant values for fragments with Z≥3.This enhancement was observed to increase strongly with increasing impact parameter.
