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NpO2 pellets preparation from liquid-to-solid conversion to sintering

In the frame of the internship in the Fuel Materials Expert (FMA) Group of SCK CEN, the Master student will have the opportunity to contribute to the OPTIMUS-PRO project.

This project is about the study of the production of 237Np targets for its future neutron irradiation, in view of producing 238Pu, a radioisotope that will be used to power deep space exploration probes and/or planetary exploration rovers.

Using the Higher Actinide Laboratory, hosting chemical glove-boxes and a chain of inert atmosphere glove-boxes, the Master student will be involved in all the steps of the production study of a target. This specifically consists of raw material characterization & dissolution, liquid-to-solid oxalate conversion studies, pelletization process (powder blending & milling, granulation, pressing) and sintering.

In order to complete this study, the Master student will have access to numerous & diverse characterization & production devices/techniques, all hosted in glove-boxes:

- UV-Vis-nIR measurement technique,

- Thermogravimetric analysis coupled with a mass spectrometer,

- BET surface area analyzer,

- powder X-ray diffraction,

- calcination & sintering furnaces,

- electromechanical press

- Scanning Electron Microscopy.

A student with previous hands-on experience in glove-boxes is required.

The minimum diploma level of the candidate needs to be

  • Academic bachelor

The candidate needs to have a background in

  • Chemistry

Estimated duration

10 months

Expert group

Fuel Materials

SCK CEN Mentor

Acevedo Muñoz Beatriz
beatriz.acevedo.munoz [at] sckcen.be
+32 (0)14 33 32 61

SCK CEN Co-mentor

Jutier Frédéric
frederic.jutier [at] sckcen.be
+32 (0)14 33 32 24