Penetration of Charged Particles Through Matter (1912 - 1954)

Bohr''s first acquaintance with the subject of penetration of charged particles through matter was as early as in 1912 when he treated the absorption of &agr; and &bgr; rays on the basis of Rutherford''s atomic model. From then on he kept a lifelong interest in the subject, often using it as an important test of the methods of atomic mechanics. His last paper on penetration, written together with...