The study by experiment on threefold fragmentation of single hot nucleus and fission with companion of particles

The data of prompt threefold fragmentation (3F) of single hot nucleus with whole deformation emerged from three body events, such as fission followed projectile-like fragment (PLF) or particles evaporated (PE) from the hot nuclei. The identifications were made by a comparison of the mass spectrum and the orientation of emission plane. Again it is true that the 3F evidently exist. In fission with companion particles there are two modes, one is sequential fission (SF) with PLF and another is in-complete fusion-fission (ICF) with PE. The yield ratio of ICF over SF is dependent on the emission angle of these particles. Also the out-of-the reaction plane azimuth angle distributes two kind peaks: one at zero degree is associated with ICF in central collision and other at 38 degree with SF in peripheral collision. By the width of the zero degree peak the nuclear temperature can be extracted. Also at backward the light particles are nearly pure evaporated, with the isotope ratio and the energy spectrum the nuclear temperature can be obtained. The projectile of 40Ar at 30 A MeV with target Tb and Ag breakup emission (PBE) has been measured. The momentum standard deviation of the fragment is 75 MeV/c that is expected. At 6 degree the PBE is isotopically against emission mass number of fragment, however at 9 degree the yield decreases with the mass number