COWAN AND REINES NEUTRINO EXPERIMENT

Cowan and Reines came up with a way of detecting the Neutrino by creating a chain of events which would give off a signal using gamma rays. This is based on positive Beta Decay, where an anti-electron neutrino was used to cause a Proton to decay, instead of gamma rays or other forms of energy:
The Proton decays into a Neutron and a Positron. A Positron is the anti-particle of an Electron, and when the Positron eventually interacts with an Electron, the two particles will eliminate each other which sets of a blast of gamma radiation. If this radiation can be detected within the sample it is can be assumed that the neutrino set off the reaction, ad in an ambiguous way has been observed.