Word: elements
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Dates: during 1950-1959
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According to the Physical Review, a group of scientists at the University of California (Albert Ghiorso, G. Bernard Rossi, Bernard G. Harvey and Stanley G. Thompson) have created Element 99, the heaviest so far. They did it by bombarding Uranium 238 (Element 92) with a beam of positively charged nitrogen atoms from a 60-inch cyclotron. The nitrogen atoms contained seven protons and seven neutrons, and when they collided with U-238, all except five of the neutrons joined its nucleus. The seven added protons raised the atomic number to 99, and the added neutrons and protons together raised...
...Element 99 is not long-lived; half of it disintegrates in 7.3 minutes. It is not plentiful. Only 40 atoms of it were identified. Their total weight: less than six hundred-trillion-trillionths of an ounce...
...work with beams of nitrogen and other large nuclei in many parts of the U.S. The AEC's long-range interest can be guessed at. When a nitrogen atom can be made to hit U-238, not normally considered fissionable, it almost always causes fission. When it forms Element 99, it liberates five free neutrons, and these are capable of causing fission too. AEC may be feeling for a new method of releasing atomic energy from difficult...
...there is a certain element of the community that seems blatantly confident that Spring will come this year. We speak of the Radcliffe girl who cagerly scans the course catalogue, of the young men who plan to install a new freshly-cast bronzes bird atop a malformed Bow Street building, of the Square merchants lifting cord jackets form cardboard crates, and of a certain set of enthusiastic undergraduates who are sure they can talk a large mob into attending a so called all-college weekend...
...Foot. This old-school element had little stomach for 42-year-old Milovan Djilas' confident heresies, and it watched with uneasiness his growing support among younger Communists. The old Communists did not like his going to the coronation of Queen Elizabeth II or his friendship with such British Socialists as Nye Bevan, Morgan Phillips and Clement Attiee. When Djilas' wordy barbs in Borba got to the old-school Communists, they demanded a showdown, and Tito gave the order...