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Ternary Fission of Uranium Induced by 414 MeY Ar-Ions as Studied with a Hole Detector

The ratio of ternary fission to binary fission is determined to be (2.4 1·0°/ο) >n the interaction of uranium with 414 MeV Ar-ions. The results are obtained by applying a new experimental technique: the hole detector in mica as suggested by STARKE. This new technique is tested with binary fission of natural uranium, induced with thermal neutrons. Furthermore, some angular distributions of fission fragments are measured and some recent theoretical developments are discussed in a qualitative manner.