Angular anisotropy of prompt gamma rays and fragment spin alignment in binary and light-charged-particle-accompanied spontaneous fission of Cf-252

Angular correlations of prompt gamma rays in binary and light-charged-parti cle (LCP)-accompanied spontaneous fission of Cf-252 were measured with a 4 pi-crystal-ball NaI(Tl) gamma-ray spectrometer. For H-3, He-4, He-6, Li, an d Be accompanied fission, gamma-ray angular distributions were deduced with respect to the motion both of the fragments and the LCPs. There is no indi cation for a change of the fragment spin alignment by the LCP release or fo r a correlation between the LCP direction and a bending motion at scission, as was argued in previous investigations. Consequences for the understandi ng of fragment spin formation an briefly discussed.