Scientist & GALLEX experiment proportional counter

Scientist & GALLEX experiment proportional counter

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Credit: TOMMASO GUICCIARDINI/INFN/SCIENCE PHOTO LIBRARY

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Caption: Solar neutrino research. A researcher holds a counter for detecting germanium atoms created in the GALLEX experiment. Located under 1400 metres of rock in the Gran Sasso Laboratory, Italy, GALLEX is looking for neutrinos emitted as a by- product of nuclear fusion in the Sun. It consists of a tank containing 54 tonnes of gallium tri- chloride. Solar neutrinos interact with the atoms of gallium and give rise to a radioactive isotope of germanium. This process creates about one atom of germanium a day. The germanium atoms are chemically extracted every 3 weeks and counted by proportional counters like the one held here.

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Keywords: astronomy, astrophysics, gallex, gallex exp, gallex experiment, gallium detector, germanium research, gran sasso, neutrino, observatory, research, solar neutrino project, sun neutrino

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