41,861 to 41,870 of 42,327 Results
Mar 18, 1993
Levine-West, M.; Salama, M., 1993, "The Mode Localization Phenomenon: Visual Test Results", https://hdl.handle.net/2014/35090, International Video Journal of Engineering Research, JPL Open Repository
The high degree of manufacturing precision required in space structures may make them moresusceptible to mode localization. In this demonstration, the mode localization phenomenon isinvestigated using an existing full scale antenna-like structure having the complexity, manufactur... |
Mar 17, 1993
Martus, K. E.; Orient, O.J.; Chutjian, A., 1993, "Effect of Trapped Ions in a Gated Time-of-Flight Apparatus", https://hdl.handle.net/2014/35051, USA, JPL Open Repository
K.E. Martus,O.J. Orient,A Three-mesh gate is used in a time-of-flight(TOF) apparatus to analyze the Velocity of positive ions. Test results and a theoretical description are presented of an effect arising from trapping ions between meshes of a two gate TOF velocity analyzer. The... |
Mar 15, 1993
Carlson, R.W.; Baines, K.H.; Girard, M.; Kamp, L.W.; Drossart, P.; Encrenaz, T.; Taylor, F.W., 1993, "Galileo/NIMS Nea-Infrared Thermal Imagery of the Surface of Venus", https://hdl.handle.net/2014/34914, Houston, Texas, USA, JPL Open Repository
No abstract provided |
Mar 15, 1993
Carson, S. C.; Carswell, J. C.; McIntosh, R. E.; Li, F. K.; Nghiem, S. V.; Lou, S. H.; Neumann, G.; McLaughlin, D. J., 1993, "Low Wind Speed Radar Backscatter Measurements at C- and Ku-Band Obtained During the Surface Wave Dynamics Experiment", https://hdl.handle.net/2014/35061, Journal of Geophysical Research, JPL Open Repository
Radar backscatter measurements collected at both C- and Ku-Band during the recent SurfaceWaves Dynamics Experiment (SWADE) on 1 March 1991 show dramatic variabilities of thenormalized radar cross section (sigma degree) of the ocean surface at low wind speed. Additionally,measurem... |
Mar 15, 1993
Ocampo, A.; Baines, K.; Pope, K.; Ivanov, B., 1993, "Global Blackout Following the K/T Chicxulub Impact: Results of Impace and Atmospheric Modeling", https://hdl.handle.net/2014/34922, ['24th Annual Lunar and Planetary Science Conference', 'Houston, Texas, USA'], JPL Open Repository
Several recent studies have suggested that shock decomposition of anhydrite target rocks during the K/T Chicxulub impact would have ejected tremendous amounts of sulfur gas into the stratosphere. |
Mar 15, 1993
Marchenkov, K. I., 1993, "Geophysical Models of Western Aphrodite-Niobe Region: Venus", https://hdl.handle.net/2014/34817, Houston, Texas, USA, JPL Open Repository
No abstract provided |
Mar 11, 1993
Kanik, I.; Ratliff, M.; Trajmar, S., 1993, "Electron-Impact Excitation of the B ^1SIGMA^+, C^1SIGMA^+ and E^1PI States of", https://hdl.handle.net/2014/35052, Chemical Physics Letters, JPL Open Repository
Electron impact excitation of CO plays an important role in planetary atmospheres andinterstellar clouds. At the present time, serious discrepancies exist among excitation cross sectionsreported in the literature for this molecule. We measured electron impact excitation cross sec... |
Mar 11, 1993
Kanik, I.; Ajello, J. M.; James, G. K., 1993, "Extreme Ultraviolet Emission Spectrum of CO_2 Induced by Electron Impact at 200 eV", https://hdl.handle.net/2014/35046, Chemical Physics Letters, JPL Open Repository
We present the extreme ultraviolet (EUV) emission spectrum of CO_2 induced by electronimpact at 200 eV. There are 36 spectral features which are identified with a resolution of 0.5 nmover the wavelength range of 40 to 125 nm. Absolute emission cross sections were obtained for eac... |
Mar 11, 1993
Kanik, I.; Trajmar, S.; Nickel, J. C., 1993, "Total Electron Scattering and Electronic State Excitations Cross Sections for O_2, CO, and CH_4", https://hdl.handle.net/2014/35053, Journal of Geophysical Research - Planets, JPL Open Repository
Available electron collision cross section data concerning total and elastic scattering, vibrationalexcitation, and ionization for O_2, CO, and CH_4 have been critically reviewed, and a set of crosssections for modeling of planetary atmospheric behavior is recommended. Utilizing... |
Mar 9, 1993
Whittlesey, A., 1993, "System Electrostatic Discharge Testing for Space Charging Caused ESD Events", https://hdl.handle.net/2014/36713, Manhattan Beach, CA, JPL Open Repository
This talk is about ground testing of spacecraft to determine immunity to the electrostatic discharges (ESDs) in certain Earth orbits. The particular spacecraft used as an example is the TOPEX/Poseidon spacecraft, an Earth orbiter with a 1334 km, 62 degree orbit. The talk is based... |