Atom bombardment ejects what appeared to be hydrogen nuclei. By 1920 he had accepted that the hydrogen nucleus is a distinct particle within the atom and named it proton. Neutrons have no electrical charge and have a free mass of 1,839 times the mass of the electron, or , the heaviest of the three constituent particles, but it can be reduced by the nuclear binding energy. Neutrons and protons (collectively known as nucleons) have comparable dimensions—on the order of —although the 'surface' of these particles is not sharply defined. The neutron was discovered in 1932 by the English physicist James Chadwick.
The Atom Station of an atom station in Iceland. After a short relationship with Búi Árland, Ugla decides to return to the “selfconscious policeman”, who is the father of her recently born child. "The Atom Station", written in 1946 and 1947, was published in 1948. The historical background of the novel is the British and later American occupation of Iceland during World War II, including the urbanisation and monetization of the Icelandic economy it stimulated. Many viewed Iceland’s independence as threatened due to the United States’ request in 1946 to establish a military base in Keflavík for 99 years, and pressure on Iceland