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Abstract

At present a measurement of the 252-Cf(SF) fragment and fission neutron correlation is being performed at C.B.N.M. It is the main purpose of this experiment to clarify the nature of the fission neutron emission processes, i.e. to determine the fraction of neutrons evaporated from the accelerated fragments versus the fraction of neutrons emitted dynamically at scission. In contradiction to previous measurements the presently found neutron fragment angular distributions are conformable to the assumption that all neutrons are emitted from the fully accelerated fragments. The unique properties of the employed fission chamber made it interesting to (re)determine the fragment distributions, especially at high TKE values where the Q values are nearly exhausted. The presented results are based on 5.10**7 analyzed fission events and show that cold fragmentation for 252-Cf(SF) is reached for fragment splits for which the light fragments are in the mass range A-L = 102-112 and A-L = 120.

Additional information

Authors: BUDTZ JOERGENSEN C, JRC GEEL ESTAB. (BELGIUM);KNITTER H H JRC GEEL ESTAB. (BELGIUM), JRC GEEL ESTAB. (BELGIUM)
Bibliographic Reference: SEMINAR ON FISSION, HABAY-LA-NEUVE (BELGIUM), MAY 22- 23, 1986 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32778 ORA
Availability: Can be ordered online
Record Number: 1989125022300 / Last updated on: 1987-02-01
Category: PUBLICATION
Available languages: en