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Sprafka's Choral Music Rehearsal Files



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AAI Scientific

Forest City Singers

Robert J. Sprafka, Ph.D.



The background picture was derived from a 1966 photograph taken in an exposure of the Brookhaven National Laboratory 80-inch Liquid Hydrogen Bubble Chamber to an incoming beam of 28 GeV/c protons. The experimental group analyzing the pictures was a subset of the LBL-Berkeley Alvarez group. The Alvarez group 46 mm camera was used.

The primary interaction is a proton-proton collision yielding 9 positively charged and 7 negatively charged secondaries, and one neutral particle decaying into one positive and one negative tertiary track (probably an anti-Lambda hyperon). This was the first sixteen pronged event + "V" observed in this experiment.
page design by r.j. sprafka (03/2006)