SOLAR CELL DEGRADATION BY PROTONS IN SPACE
Solar cell degradation by proton bombardment - radiation hazard
PROTON IRRADIATION↗
SEARCH · Engineering Papers
Results for “degradable”
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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Degradation of polymeric compositions in vacuum to 10-9 mm hg in evaporation and sliding friction experiments
Degradation of polymer compositions in vacuum in evaporation and sliding friction experiments
SLIDING FRICTION↗
Ultraviolet degradation study
Ultraviolet degradation - effect of irradiation on optical properties of coatings in atmospheric conditions
IRRADIATION↗
Studies on the Degradation of the Five-Channel Radiometer
Degradation of five-channel radiometer on Tiros satellites - outgassing of radiometer paints
DEGRADATION↗
Investigation of current degradation phenomenon in superconducting solenoids Summary report
Metallurgical effect on superconducting properties of titanium-niobium alloys in solenoid degradation phenomenon study
DEGRADATION↗
Information Services Relating to the Prevention or Limitation of Environment- Associated Degradation of Materials and Equipment Final Report
Information services relating to prevention or limitation of environment associated degradation of material and equipment
DEGRADATION↗
The degradation of signal-to-noise ratios in a crystal mixer Technical report no. 6
Degradation of input signal to noise ratio in crystal diode mixer
SIGNAL TO NOISE RATIO↗
Mechanism for spacecraft reflectance- degradation experiment
Spacecraft instrumentation for evaluating solar reflectance-degradation of ASTEC mirror materials in space environment
ADVANCED SOLAR TURBOELECTRIC CONVERSION↗
Preliminary results from a round-robin study of ultraviolet degradation of spacecraft thermal-control coatings
Ultraviolet degradation of spacecraft thermal- control coatings in simulated space environment
ULTRAVIOLET RADIATION↗
The thermal degradation mechanism of polystyrene.
Thermal degradation mechanism of polystyrene, measuring volatilization rate and molecular weight dependence on extent of pyrolysis
POLYSTYRENE↗
Pyrolysis studies - Controlled thermal degradation of mesoporphyrin.
Thermal degradation of mesoporphyrin, obtaining various alkylpyrroles and hydrocarbons, noting role of controlled pyrolysis as adjunct to mass spectrometry
ALKYL↗
Focused coherent radiation /laser/ induced degradation of solid methylene blue.
Focused laser coherent radiation-induced degradation of solid methylene and gas chromatographic analysis of reaction products
COHERENT RADIATION↗
A model for extraterrestrial solar degradation of zinc oxide.
Feasibility of doping techniques for eliminating extraterrestrial solar degradation of ZnO used as pigment for spacecraft thermal control surfaces
RADIATION EFFECT↗
The mechanism of thermal degradation of certain polyether-polyurethans.
Thermal degradation mechanism of polyether- polyurethans, analyzing fractionation and measuring molecular weights
POLYMER CHEMISTRY↗
Factors contributing to the degradation of holographic images
Factors contributing to degradation of holographic images
HOLOGRAPHY↗
Solution of the equation of degradation of gamma-radiation energy
Degradation equation of gamma radiation energy, and its solution
DEGRADATION↗
Proton Degradation of Light-Emitting Diodes
The severe degradation of optocouplers in space has been shown to be mainly due to proton displacement damage in the light-emitting diodes that are used within the optocouplers.
photonics proton degradation light-emitting diodes↗
Degradation and ESR Failures in MnO2 Chip Tantalum Capacitors
Equivalent series resistance (ESR) of chip tantalum capacitors determines the rate of energy delivery and power dissipation thus affecting temperature and reliability of the parts. Employment of advanced capacitors with reduced ESR decreases power losses and improves efficiency in power systems. Stability of ESR is essential for correct operations of power units and might cause malfunctioning and failures when ESR becomes too high or too low. Several cases with ESR values in CWR29 capacitors exceeding the specified limit that were observed recently raised concerns regarding environmental factors affecting ESR and the adequacy of the existing screening and qualification testing. In this work, results of stress testing of various types of military and commercial capacitors obtained over years by GSFC test lab and NEPP projects that involved ESR measurements are described. Environmental stress tests include testing in humidity and vacuum chambers, temperature cycling, long-term storage at high temperatures, and various soldering simulation tests. Note that in many cases parts failed due to excessive leakage currents or reduced breakdown voltages. However, only ESR-related degradation and failures are discussed. Mechanisms of moisture effect are discussed and recommendations to improve screening and qualification system are suggested.
Equivalent Series Resistance (ESR)↗