Word: antiprotons
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...using the University of California's big new atom smasher at Berkeley, Physicists Emilio Segrè and Owen Chamberlain identified an elusive subatomic particle that had long been postulated but never found: the antiproton. Their discovery, honored four years later by a Nobel Prize, helped confirm the existence of "antimatter"-the strange substance that has many physical properties exactly opposite to those of "normal" matter. Now, to the astonishment of the scientific world, a fellow physicist has filed suit against Segrè and Chamberlain, accusing them of stealing a key idea that led to their significant discovery and Nobel...
...week a team of Columbia University researchers dispelled the doubts. In the Physical Review Letters, the Columbia scientists reported that they have produced the first complex nucleus of antimatter ever observed-the anti-deuteron. It is the antimatter counterpart to the nucleus of deuterium (heavy hydrogen), consists of an antiproton and antineutron bound by a strong nuclear force, and has a negative charge. Such an achievement, the Columbia researchers conclude, provides strong evidence to support theories about the existence of an antiworld of stars, planets, and possibly even antipeople...
...Professor Arthur H. Rosenfeld fed the cards into a digital computer set up to search for stars that suggested the presence of an invisible intermediate particle. Only 93 of the 2,500 stars showed the computer what it was looking for. Carefully reexamined, the stars proved that when an antiproton hits a proton, it sometimes creates five mesons-two positive pions, two negative pions and one pion with no charge at all. For a fleeting instant, one positive and one negative pion cling to the uncharged pion, forming a single unit. That unit lives for only...
...world of the physicist can be an eerie one?and that is part of its fascination. In the field of high-energy physics, few are involved in more eerie or more fascinating work than Berkeley's Italian-born Emilio Segrč, who discovered the antiproton, which turns into a flash of energy when it hits an ordinary proton...
This year's Nobel Prize in physics (worth $42,606) went last week to two professors of the University of California at Berkeley, Emilio Segre, 54, and Owen Chamberlain, 39. In 1955 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...