We present a brief review of the results obtained by our collaboration in the frame of theprogram aimed at searching for new type of multibody decay of actinides, which wasarbitrarily called as "collinear cluster tripartitions' (CCT). First indications of new decaymode obtained for 248Cm (sf) and 252Cf (sf) let one to suppose that at least ternary almostcollinear decay of the initial nucleus into the fragments of comparable masses appear tooccur with the probability of about 10-5 per binary fission. The process is stronglyinfluenced by shell effects in the decay partners. The results under discussion wereobtained by the "missing mass" method i.e. only two of the decay products were detectedin coincidence while the conservation laws indicate a presence of at least third partner.
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