Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/74430
Type: Artigo de periódico
Title: Spontaneous-fission decay constant of U-238 measured by nuclear track techniques without neutron irradiation
Author: Guedes, S
Hadler, JC
Sarkis, JES
Oliveira, KMG
Kakazu, MH
Iunes, PJ
Saiki, M
Tello, CA
Paulo, SR
Abstract: A value of the decay constant for spontaneous fission of U-238, lambda(f) determined by particle-track detector techniques, is presented. The main source of systematic error in fission-track measurements of lambda(f) the so called "neutron dosimetry", has been avoided. Instead of calibrating the neutron source and the usual mica detector through tracks of U-235 fission induced by thermal neutrons, spontaneous-fission tracks and alpha-particle tracks of U-238 and Pu-242 were used. A value of lambda(f)= (8.66 +/- 0.38)(-17) y(-1) has been obtained.
Country: Holanda
Editor: Springer
Rights: fechado
Identifier DOI: 10.1023/A:1026218411554
Date Issue: 2003
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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