Search for short pulses of energetic photons from supernovae using the atmospheric fluorescence
Design of photomultiplier system for observing energy photon bursts from supernovae
Bertsch, D.↗
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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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A vented high-voltage system for satellite applications
Vented high-voltage system for power supply of photomultiplier tube in OAO
Laffert, D.↗
A light pulse demodulator with large bandwidth and high sensitivity
Light pulse demodulator using zero crossing technique to eliminate photomultiplier bandwidth and sensitivity limitations
Tyler, C. E.↗
Inexpensive photon counting system with internal gate generator
Preamplifier-discriminator-gate generator in printed circuit for use with photomultipliers, noting pulse sensitivity and cost
Born, J.↗
Development and application of a star-mapping technique to the attitude determination of the spin-stabilized Project Scanner spacecraft
Spin stabilized Project Scanner spacecraft attitude determination by star mapping technique, describing optics, photomultiplier, reticle, electronics and sun shield
Hinton, D. E.↗
Search for short pulses of energetic photons from supernovae using the atmospheric fluorescence
Atmospheric fluorescence observation of supernova energetic photon short pulse burst, using photomultiplier
Bertsch, D.↗
Wide-range logarithmic radiometer for measuring high temperatures
Filter radiometer utilizing photomultiplier circuit, in which a direct-coupled amplifier varies dynode voltage to maintain constant anode current, measures rapid variations of temperature of white-hot charred body at 2000 K to 3000 K.
Liston, E. M.↗
Investigation of integrating sphere measurement parameters
Directional and bidirectional reflectance of MgO sphere wall coatings, and directional characteristics of photomultiplier tube
Brown, G. L.↗
Radiation detector readout system Patent
Circuit design for determining amount of photomultiplier tube light detection utilizing variable current source and dark current signals of opposite polarity
Baker, B. R.↗
Research study of a fundus tracker, phase 2 Final report 18 Jan. 1968 - 1 Feb. 1971
Development of apparatus for studying stabilized image properties of human eye using photomultiplier tube and magnetic core array storage system
Crane, H. D.↗
Fringe counter for interferometers Patent
Digital sensor for counting fringes produced by interferometers with improved sensitivity and one photomultiplier tube to eliminate alignment problem
Howell, W. E.↗
Use of a tungsten filament lamp as a calibration standard in the vacuum ultraviolet
Sapphire windowed argon filled tungsten ribbon filament lamp in vacuum UV for application in photomultiplier quantum efficiency calibration
Buckley, J. L.↗
Light emission measurements of calcium and magnesium at simulated meteor conditions. I, II
Ca and Mg light emission and ionization cross section measurements at simulated meteor conditions, using photomultiplier and optical filters
Boitnott, C. A.↗
Characteristics of paraterphenyl as a detector in the extreme ultraviolet
Paraterphenyl coated photomultiplier as detector in far UV spectra, detailing efficiency range and sensitivity
Dyjak, C. P.↗
A digital multichannel photometer
Semiconductor diode image tube system as digital multichannel photometer, noting cost, weight and size advantages over photomultiplier tube array with pulse counting electronics
Beaver, E. A.↗
Optical enhancement of sensitivity in laser Doppler velocity systems
Utilization of optical enhancement techniques prevents loss of light by reflections at the photocathode of a photomultiplier and increases signal detection sensitivity.
Grant, G. R.↗
Rotary shutter mechanism contains optical elements
Two cylindrical shutter mechanisms having fixed outer sleeves and rotating inner sleeves use single stepping motor and Geneva mechanism to sequentially move optical components into path of ultraviolet monochromator for output control to photomultiplier. Photometric and wavelength calibration sources insure shutter positions according to operational phases.
Weilbach, A. O.↗
Measurement of the nuclear electromagnetic cascade development in glass at energies above 200 GeV
The longitudinal development of nuclear-electromagnetic cascades with energies greater than 200 GeV was measured in a low-Z (glass) absorber. This was done in the course of operating an ionization spectrometer at mountain altitude in an experiment to study the properties of gamma rays emitted from individual interactions at energies around 10,000 GeV. The ionization produced by a cascade is sampled by 20 sheets of plastic scintillator spaced uniformly in depth every 2.2 radiation lengths. Adjacent pairs of scintillators are viewed by photomultipliers which measure the mean ionization produced by an individual cascade in 10 layers each 1.1 interaction length (4.4 radiation lengths) thick. The longitudinal development of the cascades was measured for about 250 cascades having energies ranging from 200 GeV to 2500 GeV. The observations are compared with the predictions of calculations made for this specific spectrometer using a three-dimensional Monte Carlo model of the nuclear-electromagnetic cascade.
Gillespie, C. R.↗