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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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Laser activated ultraprecision ranging apparatus interfaced with a computer determines point coordinates on a photograph. A helium-neon gas CW laser provides collimated light for a null balancing optical system. This system has no mechanical connection between the ranging apparatus and the photograph.
Primary cosmic ray charge and energy spectra determination for helium through neon during solar minimum
Isotope shift measurement for 6328 angstroms helium-neon laser transition
Output power frequency response of single mode helium neon laser, determining effects of atomic collisions on frequency response of individual atoms
UV radiation from shock-heated nitrogen measured by ballistic flight through nitrogen-neon mixture
Interstellar X-ray absorption edges due to K- shell photoionization of oxygen and neon, using element abundances and atomic photoelectric cross section data
Absolute pressure calibration system using a Michelson interferometer calibrates phase characteristics and pressure sensitivities of the transducers that monitor acoustic or aerodynamic pressure fields. The interferometer uses a helium-neon laser light source and interchangeable acoustic signal generators to produce acoustic waves.
Aluminum cold cathodes for single mode helium neon gas lasers
Ionization from iron atoms incident on target gases of helium, neon, nitrogen, carbon dioxide, and air
Transition probabilities, excitation cross sections, and neon glow studies for plasmas
Integration scheme for variational r sub ij wave functions containing unlinked four-electron correlated terms for atoms up to neon
Receiver techniques and detectors for use at millimeter and submillimeter wavelengths, and excitation cross sections for argon II, krypton II, and neon II gas lasers
Radiation and gas retention ages of chondrites from mass spectrometry of helium, neon, and argon
Feasibility and design of helium-neon laser displacement transducer
Replotted data for elastic scattering of helium ions on neon and argon
Negative feedback for discharge current noise reduction in excited helium-neon laser
Calculation of lifetime and transition probability of p-excited states of neon, argon, and krypton
Measurement of spontaneous emission phase fluctation in helium, neon lasers