Cabanes-Sempere, MariaCatalá-Civera, José ManuelPeñaranda-Foix, Felipe L.Cozzo, CedricVaucher, SebastienPouchon, Manuel A.2015-05-022015-05-022015-05-02201310.1088/0957-0233/24/9/095009https://infoscience.epfl.ch/handle/20.500.14299/113666Microwave internal gelation (MIG) is a chemical process proposed for the production of nuclear particle fuel. The internal gelation reaction is triggered by a temperature increase of aqueous droplets falling by gravity by means of non-contact microwave heating. Due to the short residence time of a solution droplet in a microwave heating cavity, a detailed knowledge of the interaction between microwaves and chemical solution (shaped in small drops) is required. This paper describes a procedure that enables the measurement of the dielectric properties of aqueous droplets that freely fall through a microwave cavity. These measurements provide the information to determine the optimal values of the parameters (such as frequency and power) that dictate the heating of such a material under microwaves.text::journal::journal article::research article