SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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We propose a VLBI search to image and locate the water emission in II Zw 96. We propose 3 sites within II Zw 96 for VLBI followup (see the proposed target listing below). We request 2.5 hours of on-source integration time with the VLBA per source. The array will achieve ~ 65µJy sensitivity in K band in this time which will be sufficient to detect luminous water maser features.
Superconducting materials reduce size and weight of magnets used for stagger-tuning individual traveling-wave maser crystals. The invention is useful in microwave communication systems requiring a high information rate.
Brillouin scattering in liquids excited by He-Ne maser and observed by Fabry-Perot interferometer, noting acoustic wave velocity and line broadening
Model for behavior of optical maser in static magnetic field of arbitrary strength in Z direction and in electromagnetic field composed of traveling waves
Density operator of optical maser quantized by radiation, with application to laser oscillators
Hydrogen maser is stable short-term and long-term frequency reference for precision tracking systems. Its resettability is expressed as the rms deviation from the mean.
The design and performance of the 4170 Mc/s travelling wave maser at present installed at the GPO Radio Station, Goonhilly Downs, is described. Means of increasing the bandwidth of the device are discussed.
Traveling Wave Maser /TWM/ that operates at S-band frequencies is characterized by a greatly improved gain-bandwidth product with relatively low equivalent-noise temperature. Tests indicate that its performance exceeds that of any other type of S-band amplifier.
Design and development of atomic hydrogen maser for space vehicle application
Bibliographic citations, abstracts, and indexes on laser and maser research and development
Quantum theory of optical maser, calculating laser radiation spectrum from two time correlation function derived from equations of motion
Traveling wave maser providing 41.5 db net gain when installed in closed cycle helium refrigerator, measuring input noise temperature
Rubidium 87 maser power output dependence on cavity Q, density and light intensity, discussing spin relaxation
Traveling wave maser with 6 db amplification at 36 GHz, using Cr ion doped rutile as active material and superconducting magnet for DC magnetic field
Wideband traveling wave maser SHF preamplifier system with high gain and low noise temperature operating in closed cycle liquid He refrigerator
Self contained atomic hydrogen maser frequency standard design and development, discussing AC power requirement, control circuitry, operating parameters and stability
Anomalously intense Galactic hydroxyl microwave emission characteristics explained as maser action, discussing pumping energy requirements and mechanism
Power density and frequency spectrum of hydrogen masers