Measurements of neutrons produced by the cosmic radiation.
Low energy fast cosmic ray neutrons, measurements of energy spectrum and primary intensity variations, using organic scintillator in field of photomultiplier tube
NEUTRON SPECTRUM↗
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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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Polarimeter provides transient response in nanosecond range
Conventional polarimeter with a Senarmont compensator improves transient response and eliminates manual manipulation. A sampled photomultiplier output is fed to a low pass filter, resulting in a signal representing the optical state existing at the instant of sampling. With this technique, an unknown transient-induced retardation can be measured.
Johnston, A. R.↗
Special purpose reflectometer uses modified ulbricht sphere
Modified Ulbricht sphere measures stray radiation caused by irregularities in the reflective surface of an optical test specimen. The test specimen is positioned between a light source and exit port and all diffusely scattered radiation is measured by a photomultiplier tube in the sphere.
Gorstein, M.↗
Improved electro-optical tracking system
Electro-optical tracking system employs a laser beam illuminating source, an electronic laser beam deflector, and an image dissector photomultiplier. An electronic scanning transmitter and receiver follows rapid movements or accelerations of the target.
Johnson, R. E.↗
Readout system for radiation detector
Improved electrical circuit determines the amount of light detected by a photomultiplier tube when its output signal is in the dark-current range of the tube. The low-intensity light to which the tube responds arises from a thermo-luminescent ionized dosimeter.
Baker, B. R.↗
Research in the development of an improved multiplier phototube
Parameters in analog /dc/ and digital /single electron pulse count/ modes of processing data from photomultiplier tubes
Barr, F. H.↗
Differences between the combustion of aluminum droplets in air and in an oxygen-argon mixture
Photomultiplier studies of differences between combustion of aluminum droplets in air and oxygen-argon mixture
Nelson, L. S.↗
Microprobe Attachment for Quantitative Studies of Cathode Luminescence
Monochromator photomultiplier attachment to electron microprobe for measuring luminescence of enstatite
Greer, R. T.↗
The Image Dissector Camera - A new approach to spacecraft sensors.
Image Dissector Camera for spacecraft TV sensing systems, noting photomultiplier tube and Nimbus B and ATS-C applications
Branchflower, G. A.↗
The composition of low-energy cosmic rays in 1965.
Primary cosmic ray energy spectra and charge composition during 1965 solar modulation minimum, using scintillator photomultiplier detector on OGO 1
Balasubrahmanyan, V. K.↗
A comparison of photon counting and current measuring techniques in spectrophotometry of faint sources.
Dark noise component produced by Cerenkov pulses in photomultipliers due to cosmic ray muons, discussing spectrophotometry of faint astronomical sources
Tull, R. G.↗
Dual-mode operation of a neutron source, a concept
Pulsed neutron source operates in conjunction with a photomultiplier tube coupled to a gamma ray scintillation crystal. This allows measurements of gamma radiation from both inelastic scattering and thermal neutron capture in a single experiment.
Givens, W. W.↗
Research and development on channel multipliers for charged-particle detection Final report, 23 Apr. 1964 - 24 Jun. 1967
Design and performance of curved photomultiplier tube - effects of structural configuration on dead time and gain stability
Source record↗
Calculation of optimum design parameters for a three-terminal curved channel multiplier
Optimum design parameter calculations for curved photomultiplier tube
Source record↗
Electron multiplier development /phase 1/
Fabrication of aluminum oxide thin film window for capillary type photomultiplier tubes
Chung, W. S.↗
Uniformity of response from large area plastic scintillation detectors.
Photomultiplier geometry without use of light pipes for uniform response from large area single and double sheet plastic scintillation detectors
Gillespie, C. R.↗
Enhanced photoemission by attenuated total reflection.
Photomultiplier tubes performance enhancement by light incidence on photocathode at oblique angles explained by reflection
Pepper, S. V.↗
Circuit modification aids in atomic particle discrimination
Circuit, using a bialkali photomultiplier tube and liquid scintillator, eliminates disadvantages of Owen circuit. It distinguishes between recoil protons /energies of 200 keV/ and Compton electrons /energies of 20 keV/.
Blue, J. W.↗