Abstract: The invention is a method of depositing a solid layer (1) of boron on a metal support (2, 3) intended for a neutron detection apparatus (0) characterized in that it comprises at least one step of depositing at least one layer (1) comprising boron on the metal support (2, 3) and a step of cold-pressing of the metal support (2, 3) with the layer (1) comprising boron.

Abstract: The invention is a method of depositing a solid layer (1) of boron on a metal support (2, 3) intended for a neutron detection apparatus (0) characterized in that it comprises at least one step of depositing at least one layer (1) comprising boron on the metal support (2, 3) and a step of cold-pressing of the metal support (2, 3) with the layer (1) comprising boron.

Abstract: The invention relates to a method for providing boron nanoparticles, characterised in that it comprises at least the following steps: synthesising a boron/lithium LiB intermetallic compound by reacting a mixture of boron and lithium in a reactor, preferably under a vacuum and temperature of 650° C.; transferring and hydrolysing the boron/lithium intermetallic compound in order to produce boron nanoparticles, by immersion in a bath containing water at ambient temperature, under a neutral gas atmosphere such as argon; and separating the boron nanoparticles, especially by tangential filtration, from the other compounds produced by the hydrolysis reaction. The invention also relates to the use of boron nanoparticles.