The fragment angular distributios for 16O+159Tb, 16O+197Au and 16O+209Bireactions have been measured by the solid state track detctors. After subtraction ofthe contribution of intermediate mass fragment (IMF), the fission angular distributionshave been fitted by the transitional state statistical model (TSM)and the single spinstandard theory to extract the spins of the fission nuclei.
The intermediate mass fragment measurements in the reaction 40Ar+159Tb at30MeV/u with an array of △E(Si)+E(BGO) telescopes were carried out . The resultsindicate that this detector array is suitable for the identification of intermediate massfragments.
The calculation results show that the correlation between the intermediate mass fragment multiplicity N imf and the total number of charged particles N c is a sensitive observable for probing in medium isospin dependent nucleon nucleon cross section in the chosen energy region.
Based on these selections, were obtained, for the first time, multiplicity and rapidity distributions for clusters (or in.termediate mass fragments, IMFs), and a midrapidity source wasclearly observed.
Energy spectra of light charged particles and complex fragments emitted in the interaction of 46.2MeV/u ~(12)C with different target ~(58)Ni,~(64)Ni, ~(12)C,~(197)Au and ~(209)Bi have been measured by telescopes, consisting of CsI (T1) and surface barrier detector stacks. These telescopes for light charged particles and complex fragments have good energy resolution and mass identification.
By employing the method of double ratios of isotope yields, the nuclear temperature parameters for the reactions of 30 MeV / u 40Ar bombarding 58Ni,64Ni and 115In targets. are extracted by yields of the fragments of 3 Z 8. The dependences of the apparent temperature on some observables are investigated.
There are abundant terpeooid compounds in terrestrial immature source rocks of our country. A sample taken from Tertiary immature source rocks is analysed by GC-MS. It is identified that more than 20 terpenoid compounds in the sample, which are rarely observed in low-mature or mature source rocks.
The peripheral collision mechanisms have been systemic ally studied via the Boltzmann-Uehling-Uhlenbeck theory in the Fermi domain for ~(20)Ne+~(20)Ne collision system. The characters of energy dependence and the intermediate mass fragment production in the process of incomplete deep inelastic collision were discussed.