Accession Number:

AD0255148

Title:

DESIGN OF A MOLECULAR AMPLIFIER GROUP

Descriptive Note:

Corporate Author:

AIRBORNE INSTRUMENTS LAB INC MINEOLA N Y

Personal Author(s):

Report Date:

1960-06-01

Pagination or Media Count:

1.0

Abstract:

A traveling-wave maser TWM using a ruby crystal in a 1-78 inch long slow-wave comb structure was operated successfully. Operation is most efficient when the external magnetic field is oriented at an angle of 90 degrees with respect to the C-axis. A 0-degree C-axis crystal was used instead of the standard 60-degree C- axis crystal. This resulted in a considerable improvement in gain for the rf circuit geometry used. The final breadboard maser configuration yielded an average electronic gain of approximately 5 db per inch from 2150 to 2350 mc at a bath temperature of 1.8 K. Unidirectional loss was successfully incorporated in the maser by using polycrystalline yttrium iron arnet YIG disks. The td ratio required for coincidence of the d-c magnetic fields for ferrimagnetic resonance and for maser action was determined. Isolator reverse loss varies from 4.0 dbin. at the low-frequency end of the band to 8.5 dbin. at the high-frequency end. The figure of merit for the isolator is about 20. 9author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE