UNT Libraries Government Documents Department - 16 Matching Results

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Encapsulation of high-purity germanium detectors

Description: The encapsulation of high-purity germnium detectors is very desirable in order to increase their versatility and reliability. However, rapid and extensive degradation is seen for all detectors made from detector grade crystals which are encapsulated in a simple vacuum. Extensive studies have shown that the cause of this degradation is hydrogen adsorption on the detector surface. There it causes the formation of a strong p/sup +/ inversion layer which in turn shunts the detector junction. Reliab… more
Date: June 28, 1973
Creator: Armantrout, G. A.; Wichner, R. & Swierkowski, S. P.
Item Type: Refine your search to only Article
open access

Computer simulation studies of parabolic interpolation circuitry

Description: A computer-simulation study of parabolic interpolation circuitry for machine tool controllers was completed. Results showed that a tool center can be moved along any parabolic arc to within any realistic tolerance. Circuit design requirements were determined and input data required by the parabolic interpolators were defined. Simulation results showed that tool motion along a pronounced parabolic path would stay within a 1/2-microinch tolerance. An application of the parabolic interpolation tow… more
Date: December 28, 1973
Creator: Davenport, C.M.
Item Type: Refine your search to only Report
open access

Recovery of nitric acid from raffinate and condensate solutions by steam distillation/pyrohydrolysis and fractional distillation in a glass column

Description: Potential processes for the pilot-plant-scale purification and concentration of nitric acid condensate and raffinate solutions were studied. As a result, a process was developed where condensates were continuously purified by an aluminum nitratecalcium nitrate trap to reduce 200 to 300-ppM fluoride concentrations to <1 ppM. Next, the condensates were fed to an all-glass rectification column to concentrate nitric acid to 14 molar and to reduce 200 10 400-ppM chloride concentrations to <1 ppM. Fi… more
Date: December 28, 1973
Creator: Dietrich, W.C.
Item Type: Refine your search to only Report
open access

1964 computer run on a laser-imploded capsule

Description: WAZER Alchemy 7b (WA-7b) is a WAZER calculation of a laser-driven micro-implosion of a spherical capsule consisting of a thin gold pusher surrounded by a thick (frozen) deuterium ablator. The properties of the target capsule and the shape of the laser pulse used to irradiate it are described.
Date: March 28, 1973
Creator: Kidder, Ray E.
Item Type: Refine your search to only Report
open access

Temporal observations of the lambda5303 emission line profile during the 74 minute totality from the Concorde SST at the 30 June 1973 total solar eclipse: preliminary intensity variations above an active region

Description: From international astronomical union symposium on coronal disturbances; Surfers Paradise, Australia (3 Sep 1973). Apparatus was designed for installation on the Concorde SST to provide high resolution emission line profiles at the June 30, 1973 total solar eclipse. A prime objective was to obtain profiles that could be used to detect the coronal response to the 5 min periodicities observed in the solar photosphere. Stability of the sky scattered light, drastic reduction of seeing effects enhan… more
Date: August 28, 1973
Creator: Liebenberg, D.H. & Hoffman, M.M.
Item Type: Refine your search to only Article
open access

Review of Soviet data on the peaceful uses of nuclear explosions

Description: Over the last several years through a series of international meetings sponsored by the International Atomic Energy Agency (IAEA) and a number of publications, the Soviet union has disclosed that they have a very active program for developing peaceful uses of nuclear explosions (PNE) in their rational economy. They have described the results of 14 experimental and industrial explosions designed to develop nine different applications in the petroleum, gas, and minerals industries as well as for … more
Date: June 28, 1973
Creator: Nordyke, Milo D.
Item Type: Refine your search to only Report
open access

Calculation of resonance self shielding in $sup 235$U

Description: Analytic and Monte Carlo calculations of the Bramblett- Czirr /sup 235/U transmission experiment STANuc!. Sci. Eng. 35, 350-357 (1969)! were performed. The numbcr of fissions from the uncollided flux could be calculated as a function of depth. The results of experiment and Monte Carlo calculations are tabulated and plotted; fission and total cross sections for /sup 235/U are shown. In view of the agreement between the analytic and Monte Carlo calculations, it appeared that the ENDF/B-III cross … more
Date: June 28, 1973
Creator: Plechaty, E. F. & Cullen, D. E.
Item Type: Refine your search to only Report
open access

Mechanical Properties of Nugget Sandstone

Description: The mechanical properties of Nugget sandstone have been determined from a number of independent measurements at pressures up to 30 kbar. Pressure- volume, strength, uniaxial stress, and uniaxial strain tests yield the failure surface and effective moduli as a function of stress state, i.e., mean pressure and shear stress. Acoustic velocity determinations provide the effective moduli for low-amplitude dynamic waves. At atmospheric pressure the initial effective bulk modulus in tests with applied… more
Date: August 28, 1973
Creator: Schock, R. N.; Abey, A. E.; Bonner, B. P.; Duba, A. & Heard, H. C.
Item Type: Refine your search to only Report
open access

Operational experience with the multipass 16-disc long path laser system

Description: A brief summary is given of the operational and maintenance requirements for the Livermore long path&#x27;&#x27; laser system--the first short pulse neodymium ( lambda = 1.06 mu m) glass disc laser system. It is being issued at this time because the system is presently scheduled to be shut down at the end of the calendar year 1973. If the hardware is then put on the surplus equipment list, it would be useful for the future owner to have such information. (auth)
Date: September 28, 1973
Creator: Shearer, J. W. & Swain, J. E.
Item Type: Refine your search to only Report
open access

HTGR base program quarterly progress report for the period ending August 31, 1973

Description: The High-Temperature Gas-cooled Reactor (HTGR) work reported includes studies of basic fission-product distribution mechanisms, recycle fuel studies (including designing and testing of recycle test elements) and exploration of head-end reprocessing methods (as part of a national recycle plan and of a recycle fuel plan), and physics and fuel management studies. Materials studies include irradiation and analysis of fuel particles in capsules to evaluate fuel systems, and basic studies of control … more
Date: September 28, 1973
Item Type: Refine your search to only Report
open access

HTGR Base Program. Quarterly progress report for the period ending November 30, 1973

Description: The High-Temperature Gas-cooled Reactor (HTGR) work reported includes studies of basic fission-product distribution mechanisms, recycle fuel studies (including designing and testing of recycle test elements) and exploration of head-end reprocessing methods (as part of a national recycle plan and of a recycle fuel plan), and physics and fuel management studies. Materials studies include irradiation and analysis of fuel particles in capsules to evaluate fuel systems, and basic studies of control … more
Date: December 28, 1973
Item Type: Refine your search to only Report
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