Anti-lambda, Bubble Chamber Event
by Science Source
Title
Anti-lambda, Bubble Chamber Event
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Science Source
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Photograph - Photograph
Description
Anti-lambda event. Photograph taken August 12, 1959. Bubble Chamber-802. In 1947 during a study of cosmic ray interactions, a product of a proton collision with a nucleus was found to live for much longer time than expected 10 -10 seconds instead of the expected 10 -23 seconds. This particle was named the lambda particle and the property which caused it to live so long was dubbed "strangeness" and that name stuck to be the name of one of the quarks from which the lambda particle is constructed. The lambda is a baryon which is made up of three quarks an up, a down and a strange quark. A bubble chamber is a vessel filled with a superheated transparent liquid (most often liquid hydrogen) used to detect electrically charged particles moving through it.
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August 3rd, 2015
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