Published 1960 | Version v1
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Lifetime measurement in Proserpine by reactivity modulation (1960)

Creators

  • 1. Commissariat a l'Energie Atomique, Saclay (France).Centre d'Etudes Nucleaires

Description

The measurement method consists in varying the neutron flux periodically by means of an oscillator with cadmium sectors. From the signal received on a detector the lifetime τ can be determined; for various velocities ω, we have: (n/δn)2 = (βeff/δk)2 + (τ/δk)2ω2. Various corrections are involved, in particular the calculation of the rates of different harmonics in the oscillator signal. (author)

Availability note (English)

Available from INIS in electronic form

Abstract (French)

La methode de mesure consiste a faire varier periodiquement le flux de neutrons au moyen d'un oscillateur a secteurs de cadmium. Le signal recu sur un detecteur permet la determination du temps de vie τ; pour differentes vitesses ω, on a: (n/δn)2 = (βeff/δk)2 + (τ/δk)2ω2. Differentes corrections interviennent, en particulier, le calcul du taux des differents harmoniques dans le signal de l'oscillateur. (auteur)

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Additional details

Additional titles

Original title (French)
Mesure du temps de vie dans proserpine par modulation de la reactivite (1960)

Publishing Information

Imprint Pagination
20 p.
Report number
CEA-R--1595

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
38105021
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
CADMIUM; DELAYED NEUTRON FRACTION; FISSION CHAMBERS; HARMONIC GENERATION; LIFETIME; MEASURING METHODS; MODULATION; NEUTRON FLUX; NONLINEAR PROBLEMS; PILE OSCILLATION TECHNIQUES; PLUTONIUM REACTORS; PROMPT NEUTRONS; REACTIVITY; REACTOR KINETICS; REACTOR OSCILLATORS
Descriptors DEC
BARYONS; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; FISSION NEUTRONS; FREQUENCY MIXING; HADRONS; IONIZATION CHAMBERS; KINETICS; MEASURING INSTRUMENTS; METALS; NEUTRON DETECTORS; NEUTRONS; NUCLEONS; RADIATION DETECTORS; RADIATION FLUX; REACTORS

Optional Information

Notes
4 refs.