prompt neutron


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prompt neutron

[′prämpt ‚nü‚trän]
(nuclear physics)
A neutron released coincident with the fission process, as opposed to neutrons subsequently released.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The pulsed operation mode of the reactor is established when the prompt neutron supercriticality ([delta]k - [beta]) reaches the "equilibrium" value [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] (at 5 Hz) at which the reactor can be periodically pulsed.
This measurement dependency on the detector position and the neutron source can be attributed mostly to the signal contamination [11, 16] by the higher-mode components of the prompt neutron flux, which is caused by taking detector signals before the higher-mode components fully decay out.
where the subscript p indicates prompt neutron. [S.sub.t] is named the time source [23].
Prompt neutrons are born at energy ranges from 0.1 to 10 MeV but the fast neutron spectrum component is shifted to lower energies due to the elastic and inelastic scattering interactions of fast neutrons with sodium as well as structural and other materials existing in SFR.