Super-asymmetric fission in the 245Cm(nth, f) reaction at the Lohengrin fission-fragment mass separator Original Research Article

Mass, isotopic yields and single-fragment kinetic energy measurements for thermal-neutron induced fission of 245Cm at the Lohengrin fission-product mass separator are described. Using an ionization chamber coupled to the mass separator, we have measured the mass and isotopic yields from fragment mass A=67 up to A=77 over three yield decades. This considerably extends the data set previously known for the light peak. A full set of data is now available for this actinide in the super-asymmetric mass region. The results of mass and isotopic yields are compared with those of other compound nuclei to highlight the shell effect at mass 70 for the 246Cm★ compound-nucleus system. Also, the present results are compared to the data from the European library JEF2 and the evaluation from Wahlʹs Zp model.