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40,554 Matching Results
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Technology of controlled nuclear fusion
Separate abstracts were prepared for each of the 28 included papers. Abstracts for the remaining 43 papers appeared earlier in ERA. (MOW)
Date:
January 1, 1978
Creator:
Powell, J R & Eterno, C T
Object Type:
Article
System:
The UNT Digital Library
Technology of controlled nuclear fusion
Separate abstracts were prepared for 38 of the included papers. Abstracts have appeared earlier in ERA for the remaining 32 papers. (MOW)
Date:
January 1, 1978
Creator:
Powell, J R & Eterno, C T
Object Type:
Article
System:
The UNT Digital Library
The Neutralization of the Figure Within a Controlled Environment
The questions I have addressed in regard to neutralization were as follows: 1. How important was the figure to the environment? 2. How far could the figure's physical presence be reduced and still contribute to the concepts of the painting? 3. How vividly was the figure presented while still complying with the requirements to meet neutralization? 4. Did color and texture aid in neutralizing the figure, and, if so, how? 5. Did the scale of the paintings have any effect on the neutralization process?
Date:
August 1979
Creator:
Gibson, John R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Large-scale cryopumping for controlled fusion
Vacuum pumping by freezing out or otherwise immobilizing the pumped gas is an old concept. In several plasma physics experiments for controlled fusion research, cryopumping has been used to provide clean, ultrahigh vacua. Present day fusion research devices, which rely almost universally upon neutral beams for heating, are high gas throughput systems, the pumping of which is best accomplished by cryopumping in the high mass-flow, moderate-to-high vacuum regime. Cryopumping systems have been developed for neutral beam injection systems on several fusion experiments (HVTS, TFTR) and are being developed for the overall pumping of a large, high-throughput mirror containment experiment (MFTF). In operation, these large cryopumps will require periodic defrosting, some schemes for which are discussed, along with other operational considerations. The development of cryopumps for fusion reactors is begun with the TFTR and MFTF systems. Likely paths for necessary further development for power-producing reactors are also discussed.
Date:
July 25, 1977
Creator:
Pittenger, L. C.
Object Type:
Article
System:
The UNT Digital Library
Surface effects in controlled thermonuclear fusion
During the operation of large size plasma facilities and future controlled thermonuclear fusion reactors the surfaces of such major components as container walls, beam limiters, diverter walls and beam-dump walls of the injector region will be exposed to particle and photon bombardment from primary plasma radiations and from secondary radiations. Such radiations can cause, for example, physical and chemical sputtering, blistering, particle- and photon- impact induced desorption, secondary electron and x-ray emission, backscattering, nuclear reactions, photo-decomposition of surface compounds, photocatalysis, and vaporization. Such effects in turn can (a) seriously damage and erode the bombarded surface and (b) release major quantities of impurities which will contaminate the plasma. The effects of some of the major surface phenomena on the operation of plasma facilities and future fusion reactors are discussed. (auth)
Date:
August 1, 1975
Creator:
Kaminsky, M.
Object Type:
Article
System:
The UNT Digital Library
Atomic data for controlled fusion research
Presented is an evaluated graphical and tabular compilation of atomic and molecular cross sections of interest to controlled thermonuclear research. The cross sections are tabulated and graphed as a function of energy for collision processes involving heavy particles, electrons, and photons with atoms and ions. Also included are sections on data for particle penetration through macroscopic matter, particle transport properties, particle interactions with surfaces, and pertinent charged particle nuclear cross sections and reaction rates. In most cases estimates have been made of the data accuracy.
Date:
February 1, 1977
Creator:
Barnett, C. F.; Ray, J. A.; Ricci, E.; Wilker, M. I.; McDaniel, E. W.; Thomas, E. W. et al.
Object Type:
Report
System:
The UNT Digital Library
Microprocessor-controlled, programmable ramp voltage generator
A special-purpose voltage generator has been developed for driving the quadrupole mass filter of a residual gas analyzer. The generator is microprocessor-controlled with desired ramping parameters programmed by setting front-panel digital thumb switches. The start voltage, stop voltage, and time of each excursion are selectable. A maximum of five start-stop levels may be pre-selected for each program. The ramp voltage is 0 to 10 volts with sweep times from 0.1 to 999.99 seconds.
Date:
November 1, 1978
Creator:
Hopwood, J.
Object Type:
Report
System:
The UNT Digital Library
Microprocessor-controlled CAMAC data link module
Communication between the central control computer and remote, satellite data-acquisition/control stations at the Clinton P. Anderson Meson Physics Facility (LAMPF) is presently accomplished through the use of CAMAC-based Data Link modules. With the advent of the microprocessor, a new philosophy for digital data communications has evolved. Data Link modules containing microprocessor controllers provide link management and communication network protocol through algorithms executed in the Data Link microprocessor. 13 figures.
Date:
May 1, 1978
Creator:
Potter, J. M.
Object Type:
Report
System:
The UNT Digital Library
Technology of Controlled Nuclear Fusion. Volume 4
Separate abstracts were prepared for the 35 included papers. (MOW)
Date:
January 1, 1976
Creator:
Kulcinski, G. L.
Object Type:
Article
System:
The UNT Digital Library
Technology of Controlled Nuclear Fusion. Volume 3
Separate abstracts were prepared for each of the 30 included papers. (MOW)
Date:
January 1, 1976
Creator:
Kulcinski, G. L.
Object Type:
Article
System:
The UNT Digital Library
Technology of Controlled Nuclear Fusion. Volume 1
Separate abstracts were prepared for each of the 28 included papers. (MOW)
Date:
January 1, 1976
Creator:
Kulcinski, G. L.
Object Type:
Article
System:
The UNT Digital Library
An Analysis of College Student Problems as Indicated on the Mooney Problem Check List
This study examines personal problems which a selected group of 1970's college freshmen at North Texas State University considered important to them and investigates significant changes in the nature, configuration, and frequency of these problems from those indicated by selected freshmen of the 1960's and 1950's. None of the wide variety of previous approaches over the years in studying problems of students has presented such a broad time span as this study. The students of the 1950's and 1960's were North Texas State University freshmen enrolled in Education 161, "The Psychology of Social and Personal Adjustment." The 1970's population was taken from basic freshman English courses at North Texas State University. All students were administered the Mooney Problem Check List, and the results were prepared for computer analysis. An analysis-of-variance program was used on eight hypotheses, with a .05 level of significance required for the hypotheses to be retained. The Spearman Rank Order Correlation Coefficient was used in answering two hypotheses. There were 2,809 freshmen from the 1950's, 1,440 from the 1960's, and 695 from the 1970's.
Date:
August 1974
Creator:
Hood, Gary Kyle
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Computer-controlled neutron time-of-flight spectrometer
None
Date:
July 1, 1973
Creator:
Merriman, S. H.
Object Type:
Report
System:
The UNT Digital Library
Conceptual design of a large Spectral Shift Controlled Reactor
Within the framework of the Nonproliferation Alternative Systems Assessment Program (NASAP), the US Department of Energy (DOE) has sponsored the development of a conceptual design of a large Spectral Shift Controlled Reactor (SSCR). This report describes the results of the development program and assesses the performance of the conceptual SSCR on the basis of fuel resource utilization and total power costs. The point of departure of the design study was a 1270 MW(e) PWR using Combustion Engineering's System 80/sup TM/ reactor and Stone and Webster's Reference Plant Design. The initial phase of the study consisted of establishing an optimal core design for both the once-through uranium cycle and the denatured U-235/thorium cycle with uranium recycle. The performance of the SSCR was then also assessed for the denatured U-233/thorium cycle with uranium recycle and for the plutonium/thorium cycle with plutonium recycle. After the optimal core design was established, the design of the NSSS and balance of plant was developed.
Date:
August 1, 1979
Creator:
Matzie, R A & Menzel, G P
Object Type:
Report
System:
The UNT Digital Library
Annual report for 1974 on controlled thermonuclear reactor technology
None
Date:
February 1, 1975
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Conceptual design of a large Spectral Shift Controlled Reactor
Within the framework of the Nonproliferation Alternative Systems Assessment Program (NASAP), the US Department of Energy (DOE) has sponsored the development of a conceptual design of a large Spectral Shift Controlled Reactor (SSCR). The results are presented of the development program, and the performance of the conceptual SSCR is assessed on the basis of fuel resource utilization and total power costs. The point of departure of the design study was a 1270 MW(e) PWR using Combustion Engineering's System 80 reactor and Stone and Webster's Reference Plant Design. The initial phase of the study consisted of establishing an optimal core design for both the once-through uranium cycle and the denatured U-235/thorium cycle with uranium recycle. The performance of the SSCR was then also assessed for the denatured U-233/thorium cycle with uranium recycle and for the plutonium/thorium cycle with plutonium recycle. After the optimal core design was established, the design of the NSSS and balance of plant was developed.
Date:
August 1, 1979
Creator:
Matzie, R A & Menzel, G P
Object Type:
Report
System:
The UNT Digital Library
COMPUTER-CONTROLLED, 3-D MAGNETIC FIELD MAPPING SYSTEM.
None
Date:
January 1, 1972
Creator:
Dols, C.G.
Object Type:
Report
System:
The UNT Digital Library
Information Requirements for Controlled Thermonuclear Reactor Environmental Impact Statements
Determines the most probable designs and the general types of environmental effects for the first commercial thermonuclear reactors.
Date:
January 1, 1975
Creator:
Young, J. R.; Gore, B. F.; Mahlum, D. D.; Strand, J. A.; Thompson, R. C. & Soldat, J. K.
Object Type:
Report
System:
The UNT Digital Library
Why Corrosion Products Must Be Controlled in Power Plant Waters.
None
Date:
January 1, 1971
Creator:
Demmitt, T. F. & Johnson, A. B., (Jr.)
Object Type:
Report
System:
The UNT Digital Library
Computer-Controlled Thin-Film Matrix Image-Digitizing System.
None
Date:
January 1, 1971
Creator:
Martin, L.; Gadd, T. & Baker, T.
Object Type:
Report
System:
The UNT Digital Library
Transmutation of high-level radioactive waste with a controlled thermonuclear reactor
lected radionuclides in high-level waste undergo transmutation in the blanket rcgion of a CTR. Idealistic conditions were assumed to facilitate the calculations. These conditions are expected to produce optimistic results and thereby define an apparent upper limit for the transmutation rates. An upper limit helps to define theoretical feasibility and determine incentives for further study. The waste constituents of the fission product category studied included; targets made of Sr and Cs, and the isotopes /sup 90/Sr,/sup 137 /Cs / sup 85/Kr and /sup 129/I. Isotopes between /sup 232/U and /sup 243/Cm we re included in the actinidc category. Calculations were made for neutrons obtained from both a D-D plasma and a D-T plasma to -determine - the effect of plasma type on the transmutation rate. Two neutron flux levels were also studied to determine the effect of neutron source strength on the transmutation rate. (auth)
Date:
September 1, 1973
Creator:
Wolkenhauer, W. C.; Leonard, B. R., Jr. & Gore, B. F.
Object Type:
Report
System:
The UNT Digital Library
Status report on controlled nuclear fusion as a source of hydrogen energy
None
Date:
January 1, 1975
Creator:
Powell, J.
Object Type:
Article
System:
The UNT Digital Library
Computer-controlled neutron time-of-flight spectrometer. Part II
A time-of-flight spectrometer for neutron inelastic scattering research has been interfaced to a PDP-15/30 computer. The computer is used for experimental data acquisition and analysis and for apparatus control. This report was prepared to summarize the functions of the computer and to act as a users' guide to the software system.
Date:
December 1, 1979
Creator:
Merriman, S.H.
Object Type:
Report
System:
The UNT Digital Library
Controlled sample program publication No. 1: characterization of rock samples.
A description is presented of the methodology used and the geologic parameters measured on several rocks which are being used in round-robin laboratory and nuclide adsorption methodology experiments. Presently investigators from various laboratories are determining nuclide distribution coefficients utilizing numerous experimental techniques. Unfortunately, it appears that often the resultant data are dependent not only on the type of groundwater and rock utilized, but also on the experimentor or method used. The Controlled Sample Program is a WISAP (Waste Isolation Safety Assessment Program) attempt to resolve the apparent method and dependencies and to identify individual experimenter's bias. The rock samples characterized in an interlaboratory Kd methodology comparison program include Westerly granite, Argillaceous shale, Oolitic limestone, Sentinel Gap basalt, Conasauga shale, Climax Stock granite, anhydrite, Magenta dolomite and Culebra dolomite. Techniques used in the characterization include whole rock chemical analysis, X-ray diffraction, optical examination, electron microprobe elemental mapping, and chemical analysis of specific mineral phases. Surface areas were determined by the B.E.T. and ethylene glycol sorption methods. Cation exchange capacities were determined with /sup 85/Sr, but were of questionable value for the high calcium rocks. A quantitative mineralogy was also estimated for each rock. Characteristics which have the potential of strongly affecting …
Date:
October 1978
Creator:
Ames, L. L.
Object Type:
Report
System:
The UNT Digital Library