Word: bevatrons
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...they headed a team that found the long-sought antiprotons, key particles of the stranger-than-fiction world of antimatter (TIME, Oct. 31, 1955 et seq.). Antiprotons, which the Segre-Chamberlain team identified in a beam of subatomic debris created by Berkeley's 6.2-billion-volt bevatron, have the mass of ordinary protons but carry negative electric charges instead of positive charges. When a proton hits an antiproton, they annihilate each other, both turning into a powerful flash of gamma-ray energy...
Chamberlain modestly disclaimed full credit for his work. "Dr. Segre and I received great assistance from other people at the California Bevatron. The prize is an honor for the whole laboratory...
Chamberlain and Segre in 1955 created anti-protons in the powerful Bevatron atom smasher at the University of California's radiation laboratory in Livermore, Cal. These particles closely resemble protons, but carry negative charges...
...packets of matter created when high-energy protons hit protons at rest. Since each particle is presumed to have its "anti" counterpart, scientists have long been looking for anti-lambda. Faint traces of the elusive particle showed last year on photographic plates exposed to the 6 billion-volt Berkeley Bevatron, but the plates were too small to tell much of the anti-lambda story...
...bubble-chamber picture (see cut), an antiproton from the Bevatron enters at bottom and hits a proton (1): out of the collision come one lambda and one anti-lambda particle. Since both are neutral electrically, they leave no tracks in the liquid hydrogen, but after a short, invisible career, each decays into track-leaving particles by which it can be identified. The lambda ( 2) turns into a proton and a negative pi meson, both of which go off the picture leaving strong curved tracks. The anti-lambda (3) turns into an antiproton and a positive pi meson. The positive...