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|Type:||Artigo de periódico|
|Title:||Spontaneous-fission decay constant of U-238 measured by nuclear track techniques without neutron irradiation|
|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.|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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