Journal of Nuclear Energy Science & Power Generation TechnologyISSN: 2325-9809

All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Research Article, J Nucl Ene Sci Power Generat Technol Vol: 6 Issue: 1

Measurement of U diffusion in Nb using alpha-Spectrometry

Perez Rodolfo A1-3*, Gordillo Jorge A1, Iribarren M1,3 and Di Lalla N2
1Gerencia de Materiales, Comisión Nacional de Energía Atómica (CNEA), de Buenos Aires, Argentina
2Consejo Nacional de Investigaciones Científicas y Técnicas- CONICET Avda. Rivadavia, Argentina
3Instituto Sabato-UNSAM/CNEA, San Martín, Argentina
Corresponding author : Rodolfo Ariel Perez
Avenida General Paz 1499, (B1650KNA) San Martín, Pcia. de Buenos Aires, Argentina
Tel: 0054-011-6772-7749
Fax: 0054-011-6772-7362
E-mail: rodperez@cnea.gov.ar
Received: July 12, 2016 Accepted: December 15, 2016 Published: January 10, 2017
Citation: Perez Rodolfo A, Gordillo Jorge A, Iribarren M, Di Lalla N (2017) Measurement of U diffusion in Nb using α-Spectrometry. J Nucl Ene Sci Power Generat Technol 6:1. doi: 10.4172/2325-9809.1000164

Abstract

U bulk diffusion in Nb was measured by mean α-spectrometry in the temperature range 1533 to 1673 K (1260 to 1400°C). Measurements obey the Arrhenius law with diffusion parameters Q = 423 ± 10 KJ/mol and D0 = (2.5 ± 1)×10−4 m2/s very close to the Nb self-diffusion ones found in the literature. This behaviour is compatible with the hypothesis that U diffuses in the Nb lattice via a vacancy mechanism, at the same time it is in disagreement with previous measurements of U diffusion performed at higher temperatures, where the activation energy is significant lower.

Keywords: Diffusion; Metals; Energy materials; α-spectrometry

international publisher, scitechnol, subscription journals, subscription, international, publisher, science

Track Your Manuscript

Awards Nomination

Media Partners

open access