Her first , concerning the speed of the alpha rays of polonium , was published in 1922 . She went on to publish another on the rays ' distribution and their magnetic deviation . On completing her doctoral dissertation on the alpha rays of polonium , Irene was offered a number of teaching positions but turned them all down in to continue her studies in radioactivity . Some of the workers there regarded Irene Curie as cold and aloof to the point of being unapproachable . Her imperturbable...











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