Accession Number : ADA331609

Title :   Investigation of Atomic Physics and Frequency Stability with a Croygenic Hydrogen Laser.

Descriptive Note : Final rept 15 Jan 94-14 Jun 97,

Corporate Author : SMITHSONIAN INSTITUTION CAMBRIDGE MA

Personal Author(s) : Walsworth, Ronald L.

PDF Url : ADA331609

Report Date : JUN 1997

Pagination or Media Count : 9

Abstract : Research has been conducted on two new atomic clocks: the cryogenic hydrogen maser and the double-bulb rubidium maser. The cryogenic hydrogen maser (CHM) operates at low temperatures, and may provide frequency stability that is one to three orders of magnitude better than a room temperature hydrogen maser because of greatly reduced thermal noise and larger signal power. The double-bulb rubidium maser (DJ3RM) may have frequency stability comparable to that of a room temperature hydrogen maser but in a smaller, more robust, and lower cost package.

Descriptors :   *HYDROGEN, *CRYOGENICS, *MASERS, *ATOMIC CLOCKS, FREQUENCY, LOW TEMPERATURE, STABILITY, LASERS, ROOM TEMPERATURE, SIGNALS, POWER, NOISE REDUCTION, NOISE(ELECTRICAL AND ELECTROMAGNETIC), THERMAL RESISTANCE, NUCLEAR PHYSICS.

Subject Categories : Test Facilities, Equipment and Methods
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE