On the operation of molecular beam masers with electret focusers
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An ammonia beam maser has been operated with an electret focuser which provides semi-permanent state separation of molecules, thus permitting operation of the maser in the absence of an EHT supply. Conversely, the use of a neutral molecular beam under high-vacuum conditions permits detailed studies to be made of the relaxation properties of electrets without electrical or mechanical disturbance.
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