Atomic Energy

, Volume 124, Issue 4, pp 227–231 | Cite as

Dynamics of Power Pulses in a Research Reactor with Neptunium Nuclear Fuel

  • E. P. Shabalin
  • M. V. Rzyanin

The current trend in neutron-aided scientific research presupposes the development of new high-intensity pulsed sources. One variant of such an installation could be a pulsed reactor with a fissile-isotope core – 237Np. The present work is devoted to a study of the dynamics of power pulses of a neptunium reactor taking account of fast temperature feedback during pulse buildup. The problem is reduced to a simple model of a single frequency oscillator combined with the equation of single point kinetics of a reactor neglecting delayed neutrons. It is shown that on the basis of such an approximation, owing to feedback on the temperature of a fuel element the estimated energy of accidental power pulses decreases by almost a factor of 10 compared with a calculation neglecting fast feedback.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • E. P. Shabalin
    • 1
  • M. V. Rzyanin
    • 1
  1. 1.Joint Institute for Nuclear Research (JINR)DubnaRussia

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