A comparison of modulated source and modulated poison neutron oscillators

G. Shani

Research output: Contribution to journalArticlepeer-review


The two possible ways of neutron density modulation (neutron waves) in a nuclear reactor are compared. One method is reactivity modulation by modulation of the amount of poison seen by the core, and the second is modulation of thermalized neutrons from a 252Cf neutron source. The design of the two oscillators in the core tank is described and results are presented. The analyzed data are compared with two group-time dependent calculations. It is concluded that the two methods yield near-identical results, except in the region of the oscillator itself where the modulated poison oscillator decreases the number of neutrons, while the modulated source oscillator increases the number of neutrons.

Original languageEnglish
Pages (from-to)455-465
Number of pages11
JournalNuclear Instruments and Methods
Issue number3
StatePublished - 15 Jun 1972

ASJC Scopus subject areas

  • General Medicine


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