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Fragment characteristics from fission of 238U and 234U induced by 6.5-9.0 MeV bremsstrahlung

Göök, A. and Chernykh, M. and Eckardt, C. and Enders, J. and Neumann-Cosel, P. von and Oberstedt, A. and Oberstedt, S. and Richter, A. (2011):
Fragment characteristics from fission of 238U and 234U induced by 6.5-9.0 MeV bremsstrahlung.
In: Nuclear Physics A, pp. 1-16, 851, (1), ISSN 0375-9474,
[Online-Edition: http://dx.doi.org/10.1016/j.nuclphysa.2010.12.012],
[Article]

Abstract

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 kinetic-energy technique. Results on the fission-fragment characteristics from 238U(g,f) are in agreement with results from the literature. In addition fission-fragment mass and energy distributions from 234U(g,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.

Item Type: Article
Erschienen: 2011
Creators: Göök, A. and Chernykh, M. and Eckardt, C. and Enders, J. and Neumann-Cosel, P. von and Oberstedt, A. and Oberstedt, S. and Richter, A.
Title: Fragment characteristics from fission of 238U and 234U induced by 6.5-9.0 MeV bremsstrahlung
Language: English
Abstract:

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 kinetic-energy technique. Results on the fission-fragment characteristics from 238U(g,f) are in agreement with results from the literature. In addition fission-fragment mass and energy distributions from 234U(g,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.

Journal or Publication Title: Nuclear Physics A
Volume: 851
Number: 1
Uncontrolled Keywords: Nuclear Reaction, 234U, 238U, Photofission, Bremsstrahlung, Fission Fragments, Ionization Chamber, Fission Modes, S-DALINAC, SFB634, C5
Divisions: 05 Department of Physics
05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 11 Feb 2014 10:04
Official URL: http://dx.doi.org/10.1016/j.nuclphysa.2010.12.012
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