Results
During the period 1991-1997, the detector measured an overall rate of 77.5 SNU (Solar neutrino units), roughly 0.75 decays a day.
The rate of neutrinos detected by this experiment agreed with standard solar model predictions. Thanks to the use of gallium, it was the first experiment to observe solar initial pp neutrinos. Another important result was the detection of a smaller number of neutrinos than the standard model predicted (the solar neutrino problem). After detector calibration the amount did not change. This discrepancy - an example of the solar neutrino problem - has since been explained. Such radiochemical neutrino detectors are sensitive only to electron neutrinos, and not to the second and third generation flavours of neutrinos - the neutrino oscillation of electron neutrinos emitted from the sun, between the earth and the sun, accounts for the discrepancy.
Read more about this topic: GALLEX
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