DescripciónAEC-57-5587 BERKELEY, CALIFORNIA . . .A hydrogen bubble chamber photograph taken in the Radiation Laboratory at the University of California. It shows a sequence of two catalysed nuclear reactions — two links in a chain-like reaction. At the top left center of the photograph, a mu mason generated by the Bevaron comes in at a slight angle from left to right. At the first bend in the track, a mesic atom has been formed, a deuteron and proton have been fused into helium, and the mu meson has been ejected on a track that zigs downward and sharply to the right. At the next sharp angle in the track, another catalysed reaction has taken place, and the meson is ejected horizontally to the left across the picture. At the final angle, the meson has come to rest, and decayed into an electron which makes a sweeping curve to the right end upward. Credit: University of California
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