ATOMIC FREQUENCY STANDARD Russian patent published in 2001 - IPC

FIELD: atomic frequency standards. SUBSTANCE: atomic maser has chamber formed by walls that accommodates cavity resonator and medium storage bulb incorporating forced radiation capability. Storage bulb has sapphire cylinder open on both ends and two end plates for closing mentioned cylinder on its ends. End plates are made of titanium; their inner surfaces are covered with polyfluoroethylene. At least one of end plates is part of chamber. EFFECT: enhanced physical stiffness, optimized sizes of cavity resonator and bulb. 6 cl, 2 dwg