What field did Irene Curie win the Nobel Prize in?
She is not a Nobel Prize winner
In 1933, the Joliot-Curies made the discovery that radioactive elements can be artificially produced from stable elements. This was done by exposing aluminum foil to alpha particles. When the radioactive source was removed, the Joliot-Curies discovered that the aluminum had become radioactive. For their research, the couple was awarded the Nobel Prize in Chemistry in 1935.