Fission fragment angular correlation in the reaction induced by 84.0 MeV 16O bombarded 238U

Fission fragment angular distribution and angular correlation in the reaction induced by 84.0 MeV 16O bombarded 238U have been measured by using two position-sensitive PPAC with large area. Transfer fission has been removed from total fission using fission fragment angular correlation technique. The contribution to the total fission cross section arising from transfer is about 10%. The anisotropy of fission fragment for transfer-fission is rather small, thus the removal of the transfer fission has little effect on the total fragment angular distribution. Indeed the anisotropy becomes larger by about 5% and anomalously anisotropies still persist