Adsorption equilibria in the methane-propane- silica gel system at high pressures.
Adsorption equilibrium data obtained at high pressure for methane and propane on silica gel using radioactive tracer pulsing
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Adsorption equilibrium data obtained at high pressure for methane and propane on silica gel using radioactive tracer pulsing
Spectral transmission characteristics of fused silica before, during, and after exposure to reactor irradiation pulses
Spectral transmission measurements on fused silica during and after exposure to pulsed neutron irradiation
Optical waveguides for laser applications by proton irradiated refractivity changes in fused silica
Effect of physical parameters on reduction of silica graphite mixtures under vacuum conditions
Rocket engine evaluation of erosion and char as functions of fabric orientation for silica reinforced nozzle materials
Silica glass hardness relationship to pressure induced densification at low temperatures
Molar heat and entropy of adsorption and activity coefficient of adsorbed phase for methane-ethane- silica gel system
Single crystal growth by controlled diffusion in silica gel using metathetical and decomplexation reactions
Impact crater cross section in fused silica, describing photomicrographic technique for distinguishing hypervelocity from low energy impacts
Optical absorption in fused silica during irradiation at high temperature
Impact crater cross section in fused silica, describing photomicrographic technique for distinguishing hypervelocity from low energy impacts
Developing test program for small fused silica models of transparent walls for nuclear light bulb engine
Intermittent type silica gel adsorption refrigerator for providing temperature control for spacecraft components
Optical transmittance of fused silica at elevated temperatures during high energy electron bombardment
Ablative response of silica phenolic to simulated liquid propellant rocket engine operating conditions
Fused silica and single crystal NaCl nonlinear parameters from ultrasonic beams mixing studies
Two endurance tests of a 5-cm mercury bombardment thruster are reported. Both tests used a translational screen-grid system with the beam vectored 10 degrees. The first test lasted 141 hours and the second test operated for 2026 hours. In each test two fused silica samples (solar cell covers), 2.0 cm by 2.1 cm, were placed in shielded holders to detect materials sputtered from the thruster. Spectral optical properties between 0.398 and 2.16 microns were measured on each sample, both before and after the endurance tests. The deposition on each sample was spectrographically analyzed to determine the type of materials sputtered from the thruster. It was found that sputtering from the neutralizer is highly dependent on its position with respect to the beam edge. The sputtering from the accelerator grid of the translational screen-grid system of the 2026 hour test was sufficient to form an opaque film on the sample located in the direction opposite to the vectored beam.