1. He worked on nuclear theory , laser physics, and verifying quantum mechanics. 2. In 1937, he moved to Leipzig and started to study nuclear theory under Heisenberg. 3. Ernest Rutherford discovered the alpha particle and also developed the nuclear theory of atomic structure. 4. He then stayed at BNL, and in 2004 became the Head of Nuclear Theory group. 5. A top physicist at the Nuclear Theory Group at the Brookhaven National Laboratory in Upton, New York. 6. From 1953 to 1970 he worked at the department of nuclear theory in the Kurchatov Institute in Moscow. 7. In 1991 he was a visiting scientist in the nuclear theory group at the Technical University of Munich. 8. Bush and his advisers argue that it is long past time for a radical reassessment of nuclear theory . 9. Kinder-Geiger, a top physicist at the Nuclear Theory Group at the Brookhaven National Laboratory in Upton, New York. 10. "The advent of high energy ion colliders in Europe and North America caused a remarkable advance in Nuclear theory .