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Modeling of silicon particle growth. Progress report

Description: Efforts at the Jet Propulsion Laboratory toward the production of pure polycrystaline silicon are centered on the concept of silicon particle growth in a fluidized bed reactor (FBR) and a continuous flow pyrolyzer (CFP). The CFP possibly can provide the seed particles which will be grown to larger sizes in the FBR. In both the reactors polycrystalline silicon is obtaned from the pyrolysis of silane. A part of the JPL effort is to develop a model of silicon particle growth for the purpose of pre… more
Date: April 15, 1979
Creator: Praturi, A.K.; Hsu, G.C. & Lutwack, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Regional Issue Identification and Assessment program (RIIA). Environmental impacts and issues of the EIA MID-MID scenario: Federal Region I (New England)

Description: The impacts described here for 1985 and 1990 are based on a national energy projection which assumes medium energy demand and fuel supply through 1990 but does not incorporate the policies of the National Energy Act (NEA). This scenario, referred to as the Projection Series C or the TRENDLONG MID-MID scenario, is one of six possible energy futures developed by the DOE Energy Information Administration for the Department's 1977 Annual Report to Congress. It was chosen as representative of the of… more
Date: April 15, 1979
Creator: Brainard, J. & Munson, J.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Silicon preparation and purity from the reaction of sodium with silicon tetrafluoride and silicon tetrachloride: a thermochemical study

Description: Thermochemical equilibrium computations for the preparation of silicon (Si) by the reaction between sodium (Na), either liquid or vapor, with silicon tetrafluoride (SiF/sub 4/) and silicon tetrachloride (SiCl/sub 4/) are presented. Computations indicate that SiF/sub 4/ reacts with either liquid or gaseous Na to produce temperatures sufficiently high to form molten Si. Liquid Na reacts with SiF/sub 4/ to produce substantially higher Si yields than does the free combustion reaction with Na vapor;… more
Date: April 15, 1979
Creator: Rhein, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Purification of silicon by the silicon fluoride transport process. Thermochemical study

Description: A computer-assisted thermochemical equilibrium analysis was conducted for the silicon transport reaction: Si(s) + SiF/sub 4/(g) = (intermediates) = Si(s) + SiF/sub 4/(g). The calculations indicated that a substantial transport rate should be possible at temperatures of 1700/sup 0/K and one atmosphere pressure. Computations were made to determine whether the elemental impurities present in metallurgical-grade silicon would transfer in this process. It was concluded that aluminum, chromium, coppe… more
Date: April 15, 1979
Creator: Rhein, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Passive solar calculation methods. Interim report

Description: This report is the first in a series and details the results accomplished under the following tasks: (1) evaluation of existing passive solar calculation methods, (2) BLAST/DOE-1 program interface and comparison with BR-202, and (3) development of analytic relationships between the thermal balance and weighting factor techniques. The various methods available for use in thermal load analysis are presented with detailed informaton on algorithms used in the thermal balance and weighting factor te… more
Date: April 15, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Aerosols]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 15, 1979, 5:30 p.m.
Duration: 1 minute 24 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Easter services]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 15, 1979, 5:30 p.m.
Duration: 1 minute 17 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Dallas symphony]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 15, 1979, 10:00 p.m.
Duration: 1 minute 09 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Aerosols]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 15, 1979, 10:00 p.m.
Duration: 1 minute 20 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Wichita Sunday]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 15, 1979, 10:00 p.m.
Duration: 1 minute 20 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Large area silicon sheet by EFG. First quarterly report, January 1, 1979-March 31, 1979

Description: In growth station JPL No. 1 the work during this quarter centered around trying to evaluate any influences on ribbon quality which might be caused by various materials of construction which are used in the growth furnace. At the present level of ribbon quality, which has produced 8.5% to 9.5% efficient solar cells, no particular influence of any furnace part was detected. The experiments rather led to the suspicion that the general environment and the somewhat unoptimized materials handling pro… more
Date: April 15, 1979
Creator: Wald, F.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Structure and electrical activity of planar defects in EFG ribbons. First quarterly report, January 1--March 31, 1979

Description: The structure and electrical activity of planar defects in EFG Silicon was investigated by optical, electron beam induced current (EBIC), and transmission electron microscopy (TEM). What appears to be twin boundaries by both optical microscopy + etching, and by EBIC are in reality systems of microtwins, some of which are only a few atomic lattice planes thick. The electrical activity of planar defects appears to be correlated with emission of dislocations especially at termination points. Impur… more
Date: April 15, 1979
Creator: Ast, D.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fusion Materials Irradiation Test Facility at Hanford

Description: The Fusion Materials Irradiation Test Facility (FMIT) is a high-energy, high-flux neutron source for fusion materials development. The FMIT linear accelerator will produce a 35 MeV beam of deuterons that generates high-energy neutrons by a nuclear stripping reaction with flowing liquid lithium targets. The targets will be located in two identical irradiation test cells, either of which will provide an irradiation volume of 10 cm/sup 3/ at a neutron flux of 10/sup 15/ n/cm/sup 2/-s and 500 cm/su… more
Date: April 15, 1979
Creator: Pottmeyer, E. W., Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Characterization and analysis of Devonian shales as related to release of gaseous hydrocarbons. Quarterly technical progress report, January-March, 1979

Description: This program has the objective of determining the relationships between the shale characteristics, hydrocarbon gas contents, and well location, and thereby provide a sound basis for (1) assessing the productive capacity of the Eastern Devonian Gas Shale deposits and (2) guiding research, development, and demonstration projects to enhance the recovery of natural gas from the shale deposits. The Y-1 well in Allegany County, New York was sampled in September 1978. 412 samples were collected from t… more
Date: April 15, 1979
Creator: Kalyoncu, R. S.; Boyer, J. P. & Snyder, M. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Medium-temperature air-heater development program. Final report, October 1, 1977-December 31, 1978

Description: A program to design, fabricate, and verify by test a low-cost (in volume production), modularized, practical solar air heater adaptable for new or retrofit space-heating and hot-water applications is described. The unique hardware elements of the SOLAIR II medium-temperature air heater described are the TCA solar collectors, energy transfer module, interconnecting ductwork, and mounting hardware. SOLAIR II is a two-tank domestic hot-water-augmented system. The system is described in detail; mar… more
Date: April 15, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Definition, development, and demonstration of analytical procedures for the structured assessment approach. Final report

Description: Analytical procedures were refined for the Structural Assessment Approach for assessing the Material Control and Accounting systems at facilities that contain special nuclear material. Requirements were established for an efficient, feasible algorithm to be used in evaluating system performance measures that involve the probability of detection. Algorithm requirements to calculate the probability of detection for a given type of adversary and the target set are described.
Date: April 15, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Wichita Sunday]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 15, 1979
Duration: 1 minute 50 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Debbie]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 5:30 P.M.
Date: April 15, 1979
Duration: 50 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Student Protest]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10:00 P.M.
Date: April 15, 1979
Duration: 1 minute 44 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Symphony]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 15, 1979, 5:30 p.m.
Duration: 1 minute 12 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: 727 Minor]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 15, 1979, 5:30 p.m.
Duration: 53 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
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