6 Matching Results

Search Results

Results: 1 - 6
open access

X-ray detector calibrations in the 280-eV to 100-keV energy range

Description: The absolute sensitivity for several different types of radiation detectors has been measured using x-rays in the energy range of 280 eV to 100 keV. The photons in this energy range are produced using three separate x-ray-generating facilities. The detectors include a silicon semiconductor, two photoelectric diode detectors employing aluminum and gold photocathodes, and three detectors incorporating plastic scintillators and photodiodes. The plastic scintillators were MEL-150C, Pilot B, and NE1… more
Date: April 21, 1976
Creator: Gaines, J. L.; Kuckuck, R. W. & Ernst, R. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cross-field injection of a charged, polarized, ion-electron beam

Description: An early idea for fueling a controlled fusion device had been the injection of a polarized mixture of ions and electrons across a magnetic field and into the device. Now, the beam intensity (several kA/cm/sup 2/) required for this technique is available from pulsed ion diodes. Remaining feasibility questions involve beam optics and trapping. The most obvious advantage over neutral-beam injection is avoidance of the need to produce high-energy atoms. Therefore, the technique will compete best at… more
Date: April 21, 1976
Creator: Hamilton, G. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Glass transition temperatures of epoxy resins by pulsed nuclear magnetic resonance spectroscopy

Description: Pulsed nuclear magnetic resonance spectroscopy has been used to measure the glass transition temperatures of cured epoxy resins. These measurements make it possible to monitor the cure and determine the glass transition temperature as a function of the curing conditions and the concentration of the components. Knowledge of the glass transition temperature of the cured epoxies allows screening of them for a number of uses, including adhesives and coatings operations.
Date: April 21, 1976
Creator: Rutenberg, A. C.; Dorsey, G. F. & Peck, C. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen--deuterium exchange in water vapor: the mass spectrometric sensitivities and the equilibrium constant

Description: The equilibrium constant, K/sub HDO/, for the reaction H/sub 2/O + D/sub 2/O = 2HDO can be expressed as an intensity ratio, I, measured mass spectrometrically, times a sensitivity ratio, S, measured in mass spectrometric calibration experiments. The latter is difficult to measure and previously was assumed to be unity. The 2.4 percent discrepancy between K's from theoretical calculations and direct mass spectrometric measurements might be explained by another value of S. An indirect measurement… more
Date: April 21, 1976
Creator: Pyper, J. W.; Dupzyk, R. J.; Friesen, R. D.; Bernasek, S. L.; May, C. A.; Echeverria, A. W. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Oral History Interview with Lee E. Johnson, April 21, 1976

Description: Interview with Lee E. Johnson, a retired educator, concerning his recollections about military life during World War I. Johnson discusses his education; his enlistment in the Texas National Guard; his training at Pecan Gap; Camp Bowie; the formation of the 36th Division; officers training school at Camp Pike, Arkansas; embarkation for France; Saint-Amand and Saint-Nazairre.
Date: April 21, 1976
Creator: Milner, E. R. & Johnson, Lee E., 1893-
Item Type: Refine your search to only Book
Partner: UNT Oral History Program
Back to Top of Screen