SEARCH · Engineering Papers
Results for “RUBIDIUM”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Rocket measurements of Sq currents at mid-latitude
Double gas cell rubidium vapor magnetometers in Nike-Apache rockets and ionospheric current detection
Rocket measurements of midlatitude Sq currents
Nike-Apache rocket ionospheric current measurements using rubidium-vapor magnetometer
Rb-Sr ages of chondrules and carbonaceous chondrites.
Rubidium-strontium ages of chondrules and carbonaceous chondrites
Properties of simple atoms and ions Semiannual report, 1 Jul. - 31 Dec. 1966
Properties of simple atoms and ions - atomic helium, rubidium, lithium, barium, and potassium transitions
Molecular beam measurement of the hyperfine structure of super 85 Rb super 19 F.
Molecular beam electric resonance /MBER/ SPECTROMETER for hyperfine structure of rubidium fluoride
The age of the carbonates in martian meteorite ALH84001
The age of secondary carbonate mineralization in the martian meteorite ALH84001 was determined to be 3.90 +/- 0.04 billion years by rubidium-strontium (Rb-Sr) dating and 4.04 +/- 0.10 billion years by lead-lead (Pb-Pb) dating. The Rb-Sr and Pb-Pb isochrons are defined by leachates of a mixture of high-graded carbonate (visually estimated as approximately 5 percent), whitlockite (trace), and orthopyroxene (approximately 95 percent). The carbonate formation age is contemporaneous with a period in martian history when the surface is thought to have had flowing water, but also was undergoing heavy bombardment by meteorites. Therefore, this age does not distinguish between aqueous and impact origins for the carbonates.
Opto-Electronic Oscillator Stabilized By A Hyperfine Atomic Transition
Opto-electronic oscillator (OEO) is a closed-loop system with part of the loop is implemented by an optical beam, and the rest by RF circuitry. The technological advantage of this approach over traditional all-RF loops in the gigahertz range comes from the that frequency filtering can be done far more efficiently in the optical range with compact, low power, and have superior stability. In this work, we report our preliminary results on using the phenomenon of coherent population trapping in (87) Rb vapor as an optical filter. Such a filter allows us to stabilize the OEO at the hyperfine splitting frequency of rubidium, thus implementing a novel type of frequency standard.
HYDROMAGNETIC WAVES GENERATED BY THE JULY 9, 1962, NUCLEAR WEAPONS TEST AS OBSERVED AT COLLEGE, ALASKA
Detection of hydromagnetic waves, generated by nuclear explosions, by a rubidium vapor magnetometer
Magnetometer measures orthogonal components of magnetic fields
Driven magnetometer accurately measures the components of a low strength magnetic field in each of three mutually perpendicular directions. To accomplish this, it employs the principle of magnetic resonance in optically pumped rubidium vapor.
Electrodeless discharge lamp is easily started, has high stability
Electrodeless discharge borosilicate glass lamp is used in various high-resolution optical systems. It is partially charged with krypton, contains small amounts of rubidium, and is enclosed in a hermetically sealed envelope that maintains the lamp at an optimum temperature during discharge. The lamp is quickly started by its excitation coil.
The Chemical Composition and Origin of Moldavites
Metal oxide and rubidium-strontium content of moldavites
Pulsed-laser ranging
Pulsed rubidium laser range measurements with delayed sweep oscilloscope, and with digital readout system
Rocket measurements of S sub q currents at midlatitude.
Midlatitude ionospheric currents detected by rocketborne rubidium vapor magnetometers in Nike- Apache rockets
New data on the chemical composition and origin of moldavites.
Chemical composition and origin of moldavites, noting densities, refractive indices, oxide content, rubidium-strontium ratio, etc
Preparation and investigation of absorbing magnetometer cells with double radiooptical resonance
Filling and covering for potassium, rubidium, and cesium vapor absorption chambers of radiooptical resonance magnetometers
First magnetic field results from the OGO-2 satellite
Root-mean-square differences between measured magnetic field values obtained by rubidium vapor magnetometer aboard OGO-2 satellite and values derived from spherical harmonic expansions
A latitude survey of the equatorial electrojet with rocket-borne magnetometers
Rocket borne rubidium magnetometer measurements for latitude determination of equatorial electrojet