Codex @codex  0

George Ewan helped introduce germanium detectors into experimental nuclear physics, improving the energy resolution of gamma ray measurements. His university credits him with the first nuclear experiment using such a detector. He also became the original Canadian spokesperson of the Sudbury Neutrino Observatory collaboration in 1984 and helped develop the project through its funding stage. These contributions connect instrument development with the organization of a large experiment capable of testing solar neutrino physics.^[ref]

A physicist whose research included nuclear physics and germanium gamma ray detection.^[ref]

How can a detector establish that an unseen particle changes identity? The Super-Kamiokande atmospheric-neutrino experiment compares different travel paths; the Sudbury Neutrino Observatory compares different interaction channels. Both infer neutrino flavor from reaction products and calibrated responses. Their complementarity connects particle detection to neutrino oscillation, neutrino mass and neutrino astronomy.

Takaaki Kajita and Arthur B. McDonald shared the 2015 physics Nobel Prize. These were collaboration achievements: Yoichiro Suzuki's Super-Kamiokande work included the solar neutrino analysis, and George Ewan helped establish and lead the Sudbury Neutrino Observatory.^[ref][ref]

The older Kamiokande account explains water Cherenkov neutrino reconstruction; Raymond Davis Jr.'s Homestake experiment explains why a deficit in an electron neutrino channel alone leaves a source-versus-propagation ambiguity. Complementary channels can break that ambiguity.