In situ Raman spectroscopy on nuclear materials in hot cell

Miro, S.*; Peuget, S.*; Tupin, M.*; Fayette, L.*; Nakayoshi, Akira  ; Perrin, S.*; Jegou, C.*

Micro-Raman spectroscopy is a powerful technique for analyzing nuclear materials (fuels, claddings and simulated fuel debris). For this purpose, the confocal Raman spectrometer of the Atalante facility (CEA/Marcoule), coupled to an optical microscope in a hot cell, is used to study the aging of nuclear materials in service conditions (reactor, interim storage, waste disposal) or in accidental conditions, subjected to complex scenarios of irradiation, temperature and interaction with the surrounding environment. This contribution aims to illustrate, through examples, the interest of Raman spectroscopy in the characterization of nuclear materials in a wide range of chemical composition and solicitation.