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Like the identification nearly a year ago of the antiproton (TIME, Oct. 31), the work was done with the Berkeley Bevatron, the world's most powerful particle accelerator, and a long train of auxiliary apparatus. The Bevatron's beam of 6.2 billion-volt protons was shot into a beryllium target. Out of the target came a secondary beam of assorted atomic debris. The particles with a negative charge, separated from the rest by the Bevatron's strong magnetic field, were mostly mesons. Among them were a few antiprotons (negative protons) formed when the Bevatron's powerful...
...this action was predicted by theory. The Berkeley scientists, by carefully screening out of the beam all antiprotons and gamma rays, proved that it actually happens. The surviving mesons, neutrons and anti-neutrons were allowed to pass into a counting device which measures flashes of energy released by each entering particle. The ordinary neutrons gave small flashes. The mesons gave flashes about twice as strong. Occasional flashes 20 times as strong (2 billion volts) could be only the result of the mutual annihilation of a neutron and an antineutron...
Midget Atom Reactor. Aerojet-General Nucleonics of Berkeley, Calif., is developing a small (9 by 6½ ft.) low-voltage nuclear reactor for research and engineering uses. Aerojet will begin to make reactors in December, "mass-producing" one a month, hopes to sell them to schools, hospitals and industry in the U.S. and abroad. Cost: $95,000 each...
...plentiful and excellent. The first cyclotron on the European continent was in operation at the Leningrad Radium Institute before 1940. Two other cyclotrons were in the works, one of which (if the war had not intervened) would have been three times more powerful than the 60-inch cyclotron at Berkeley, then the world's biggest...
Vesper service speaker for this Sunday will be Robert C. Leslie, Professor of Pastoral Psychology and Counseling, Pacific School of Religion in Berkeley, California. He will take the place of Dr. G. Bromley Oxnam who is in the hospital...