Frédéric Joliot-Curie

Born in Paris, France, Frédéric Joliot was a graduate of ESPCI Paris.[4] In 1925 he became an assistant to Marie Curie, at the Radium Institute. He fell in love with her daughter Irène Curie, and soon after their marriage in 1926 they both changed their surnames to Joliot-Curie.[5][6] At the insistence of Marie, Joliot-Curie obtained a second baccalauréat, a bachelor's degree, and a doctorate in science, doing his thesis on the electrochemistry of radio-elements.

While a lecturer at the Paris Faculty of Science, he collaborated with his wife on research on the structure of the atom, in particular on the projection, or recoil, of nuclei that had been struck by other particles, which was an essential step in the discovery of the neutron by James Chadwick in 1932. In 1935 they were awarded the Nobel Prize in Chemistry for their discovery of Induced radioactivity, resulting from the creation of short-lived radioisotopes by nuclear transmutation from the bombardment of stable nuclides such as boron, magnesium, and aluminium with alpha particles.

In 1937 he left the Radium Institute to become a professor at the Collège de France. In January 1939 he wrote a letter to his Soviet colleague Abram Ioffe, alerting him to the fact that German physicists had recently discovered nuclear fission of uranium bombarded by neutrons, releasing large amounts of energy.[7] He went on to work on nuclear chain reactions and the requirements for the successful construction of a nuclear reactor that uses controlled nuclear fission to generate energy. Joliot-Curie was mentioned in Albert Einstein's 1939 letter to President Roosevelt as one of the leading scientists on the course to nuclear chain reactions. The Second World War, however, largely stalled Joliot's research, as did his subsequent post-war administrative duties.

Stamp issued by Romania commemorating Frédéric Joliot-Curie ("The 10th Anniversary of the World Peace Movement")

At the time of the Nazi invasion in 1940, Joliot-Curie managed to smuggle his working documents and materials to England with Hans von Halban, Moshe Feldenkrais and Lew Kowarski. During the French occupation he took an active part in the French Resistance. In June 1941 he took part in the founding of the National Front, and became its president. In the spring of 1942, he joined the French Communist Party to become a member of its Central Committee in 1956.[8] Collins and LaPierre in their book Is Paris Burning? note that during the Paris uprising in August 1944 he served in the Prefecture of Police, manufacturing Molotov cocktails for his fellow insurgents, the Resistance's principal weapon against German tanks. The Prefecture was the scene of some of the most intense fighting during the uprising.[9]

A team of scientists and intelligence officers from the allied Alsos Mission later found Curie at the Collège de France. He was sent to England to be interviewed and gave important information about the names and activities of German scientists.

He served as director of the French National Centre for Scientific Research, and appointed by Charles De Gaulle in 1945, he became France's first High Commissioner for Atomic Energy. In 1948 he oversaw the construction of the first French atomic reactor. He and Irène visited Moscow for the two hundred and twentieth anniversary of the Russian Academy of Science and returned sympathizing with "hard-working Russians".[6] His affiliation with the Communist party caused Irène to be detained on Ellis Island during her third trip to the US, coming to speak in support of Spanish refugees, at the Joint Antifascist Refugee Committee's invitation. A devoted communist, he was purged in 1950 and relieved of most of his duties, but retained his professorship at the Collège de France. Joliot-Curie was one of the eleven signatories to the Russell–Einstein Manifesto in 1955. On the death of his wife in 1956, he took over her position as Chair of Nuclear Physics at the Sorbonne. Frédéric's health was by that time declining, and he died in 1958 from liver disease, which, like the death of his wife, was said to be the result of overexposure to radiation.[10]