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Universal curve of the thermal neutron self-shielding factor in foils, wires, spheres and cylinders

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Abstract

The interpretation of the sample activation in a nuclear reactor requires the knowledge of two corrective parameters: the thermal neutron self-shielding factor, G th, and the resonance neutron self-shielding factor, G res. The authors established a universal curve of G res for isolated resonances and various geometries. The present paper deals with the description of G th in foils, wires, spheres and cylinders by means of a universal curve on the basis of a dimensionless variable which includes the physical, nuclear and geometrical properties of the sample. The universal curve is in good agreement with the experimental and calculated values obtained from the literature.

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Authors and Affiliations

  1. Instituto Tecnológico e Nuclear, ITN Estrada Nacional 10, Apartado 21, 2686-953, Sacavém, Portugal

    E. Martinho, J. Salgado & I. F. Gonçalves

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  1. E. Martinho
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  2. J. Salgado
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  3. I. F. Gonçalves
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Martinho, E., Salgado, J. & Gonçalves, I.F. Universal curve of the thermal neutron self-shielding factor in foils, wires, spheres and cylinders. Journal of Radioanalytical and Nuclear Chemistry 261, 637–643 (2004). https://doi.org/10.1023/B:JRNC.0000037107.17274.16

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  • DOI: https://doi.org/10.1023/B:JRNC.0000037107.17274.16

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