Irene Joliot-Curie died on March 17, 1956.

This work prepared the way for the discovery of the neutron by Sir James Chadwick and, above all, for the discovery in 1934 by Irène and Frédéric Joliot-Curie of artificial radioactivity.

In December 1924, Frederic Joliot visited the Institute where he met Marie Curie.