McGill U. and Bohr Inst.

The extension of maser techniques to the infrared and optical region is considered. It is shown that by using a resonant cavity of centimeter dimensions, having many resonant modes, maser oscillation ...

The temperature dependence of the initial susceptibility χ0 of nickel above the Curie point Tc and the field dependence of its magnetization at Tc are deduced from the data of Weiss and Forrer and ...