Fission of 238U and 234U induced by bremsstrahlung of 6.5 - 9.0 MeV endpoint energy has been investigated at the superconducting Darmstadt electron linear accelerator S-DALINAC. Using a twin Frisch grid ionization chamber, fission-fragment energy and mass distributions have been determined by means of the double kineticenergy technique. Results on the fission-fragment mass and energy distributions from 234U (gamma,f) are presented for the first time in this energy region. An analysis of fission modes within the Brosa model has been performed. The relative yield of the S1 mode was found to be (13+/-3)% in 234U and (35+/-2)% in 238U.
GOEOEK A.;
CHERNYKH M.;
ECKARDT C.;
ENDERS J.;
VON NEUMANN-COSEL P.;
OBERSTEDT Andreas;
OBERSTEDT Stephan;
RICHTER A.;
2012-06-18
ELSEVIER SCIENCE BV
JRC61325
0375-9474,
http://www.sciencedirect.com/science/article/pii/S0375947410007761,
https://publications.jrc.ec.europa.eu/repository/handle/JRC61325,
10.1016/j.nuclphysa.2010.12.012,
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