Evidence for Collinear Cluster Tripartition
Abstract
We present the latest experimental evidence for a new exotic decay mode - Collinear Cluster Tripartition. Among 2 million binary fission events from 252Cf detected with FOBOS spectrometer we have found over 30 events with clear mass deficit of about 100 atomic mass units. 20 of these events form a distinct and well-separated rectangle in the mass-mass plot gated by velocities and momenta. The corners of the rectangle correspond to the masses of magic nuclei: 68Ni and 84Se/86Kr. We thus interpret these events as originating from the three-fold decay of an elongated Cf nucleus dominated by the 3 clusters: 68Ni, 84Se and 86Kr. Due to the collinear configuration at scission, most energy is carried out by the 2 external clusters leaving the central fragment nearly at rest.
- Publication:
-
Seminar on Fission
- Pub Date:
- February 2004
- DOI:
- 10.1142/9789812702814_0012
- Bibcode:
- 2004sefi.conf..102T