A comparison of modulated source and modulated poison neutron oscillators

G. Shani

doi:10.1016/0029-554X(72)90031-6

A comparison of modulated source and modulated poison neutron oscillators

G. Shani

Department of Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

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 language	English
Pages (from-to)	455-465
Number of pages	11
Journal	Nuclear Instruments and Methods
Volume	101
Issue number	3
DOIs	https://doi.org/10.1016/0029-554X(72)90031-6
State	Published - 15 Jun 1972

ASJC Scopus subject areas

Medicine (all)

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10.1016/0029-554X(72)90031-6

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title = "A comparison of modulated source and modulated poison neutron oscillators",

abstract = "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.",

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N2 - 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.

AB - 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.

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DO - 10.1016/0029-554X(72)90031-6

M3 - Article

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JF - Nuclear Instruments and Methods

IS - 3

ER -

A comparison of modulated source and modulated poison neutron oscillators

Abstract

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