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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Observations from Apollo 14 suprathermal ion detector including ionospheric ion density, mass and energy spectra during venting in LM cabin, large ion cloud, and ion resulting from impacts
Rocket and balloon measurements of energy spectra and fluxes of fast neutrons, gamma rays, and X rays in atmosphere
Photoelectron fluxes and energy spectra in ionosphere for predawn and sunlit atmospheres, taking into account elastic and inelastic collisions
Solar wind ion abundances from satellite observation, discussing energy spectra, particle distributions, etc
Directional differential energy spectra for proton intensities in outer radiation zone near magnetic equator from satellite observations
Nucleus energy spectra projection from Hartree- Fock intrinsic wave functions model space, using coupled orbital matrix elements
Quiet time fluxes and differential energy spectra of protons and alpha particles at 2-20 MeV measured by cosmic ray detectors on OGO-3
Solar flare electrons at 10-200 MeV region, discussing energy spectra and time history
Ionospheric low energy electron and proton fluxes near equator from Isis 1 satellite soft particle spectrometer observations, considering energy spectra and pitch angle distribution
Electron energy spectra construction from Al, Sn and Au target layers transmission angular distribution measurements, using computer calculated spectra for comparison
Negative pion capture in nuclei, examining charged particle emission energy spectra
Satellite-borne anisotropy and energy spectra measurement instruments for cosmic ray electrons and protons and solar and galactic X-rays
High energy primary cosmic ray program of Goddard Space Flight Center involving charge composition and energy spectra studies in balloon and satellite experiments
Solar flare radiation data from Pioneer spacecraft, detailing anisotropy, heliocentric longitude gradients, decay time constants and energy spectra
Secondary electrons and photons energy spectra and depth dependence in upper atmosphere from numerical solution of one dimensional transport equations
Inelastic electron scattering cross sections and energy spectra from Al and Au targets, using magnetic analyzer with high resolution detector
Photoelectron flux and energy spectra effects on ionospheric phenomena, examining sunlit and predawn atmospheric models
Spectrometric data were used to gain information for computation of the flux-energy spectra of bremsstrahlung inside the Gemini spacecraft and to determine if energetic electrons are able to penetrate the vehicle walls. The spectra were compared with computer predicted bremsstrahlung spectra by the use of data from beta spectrometers flown on Gemini 10 and 12 missions. The calculations of bremsstrahlung radiation involved uncertainties because of the small amount of information available on cross-section interaction and because of the complex, heterogeneous composition of the spacecraft. The bremsstrahlung detector was designed for time-differentiated measurement of the electron-induced gamma rays over a large section of the vehicle. Preliminary analysis of the data obtained during the missions was indicative that electrons did penetrate the spacecraft wall.