Resource Type
Collection
Office of Scientific & Technical Information Technical Reports
720
Technical Report Archive and Image Library
61
Congressional Research Service Reports
28
Texas State Publications
16
National Advisory Committee for Aeronautics Collection
11
Office of Technology Assessment
5
End of Term Publications
2
Federal Communications Reports
2
CyberCemetery Extracted Publications
2
D. Jack Davis Art Education Collection
1
2 More
Serial/Series Title
United States Geological Survey Reports
22
Trace elements investigations report
17
Atomic Energy Commission Reports
8
NACA Research Memorandums
6
GJBX
5
NACA Technical Notes
4
United States Bureau of Mines Reports
4
United States Department of Energy Grand Junction Office Reports
4
AEC research and development report
3
Construction Report
3
60 More
Country
States
Decade
Month
Language
838 Matching Results
Results open in a new window/tab. Unexpected Results? Search the Catalog Instead.
Results:
1 - 24 of
838
next
THE FATIGUE BEHAVIOR OF Pu-1.0 w/o Ga DELTA-STABILIZED PLUTONIUM
None
Date:
January 22, 1965
Creator:
Gardner, H.R.
System:
The UNT Digital Library
Simulations of RF capture with barrier bucket in booster at injection
As part of the effort to increase the number of ions per bunch in RHIC, a new scheme for RF capture of EBIS ions in Booster at injection has been developed. The scheme was proposed by M. Blaskiewicz and J.M. Brennan. It employs a barrier bucket to hold a half turn of beam in place during capture into two adjacent harmonic 4 buckets. After acceleration, this allows for 8 transfers of 2 bunches from Booster into 16 buckets on the AGS injection porch. During the Fall of 2011 the necessary hardware was developed and implemented by the RF and Controls groups. The scheme is presently being commissioned by K.L. Zeno with Au32+ ions from EBIS. In this note we carry out simulations of the RF capture. These are meant to serve as benchmarks for what can be achieved in practice. They also allow for an estimate of the longitudinal emittance of the bunches on the AGS injection porch.
Date:
January 23, 2012
Creator:
Gardner, C. J.
System:
The UNT Digital Library
Audio-magnetotelluric data log and station location map for Monroe-Joseph Known Geothermal Resource Area, Utah
The station locations are mapped and the observed apparent resistivity in ohm-meters is tabulated for each location over the frequency range of 7.5 to 18,600 cycles/sec. (WHK)
Date:
January 1, 1976
Creator:
Gardner, S.; Williams, J. M. & Brougham, G. W.
System:
The UNT Digital Library
INTERACTIONS OF DETONATION WAVES IN CONDENSED EXPLOSIVES
None
Date:
January 1, 1965
Creator:
Gardner, S.D. & Wackerle, J.
System:
The UNT Digital Library
Effects of Some 3d and 4d Solutes on the Superconductivity of Technetium
None
Date:
January 1, 1972
Creator:
Koch, C. C.; Gardner, W. E. & Mortimer, M. J.
System:
The UNT Digital Library
Color Transparency and the Energy Evolution of Final-State Interactions in Charmonium Photoproduction
None
Date:
January 1, 1991
Creator:
Gardner, A. & Gardner, Susan
System:
The UNT Digital Library
Studies of Charged Particle Distributions in an Electrostatic Confinement System. Progress Report, 1 November 1971--31 January 1976
Microwave cavity techniques were used to measure electron density in a spherical, inertial-electrostatic confinement device using six ion guns. The density was roughly proportional to ion current (1 to 17 mA) and decreased somewhat with increasing ion energy (10 to 37 keV). With D$sub 2$ pressure decrease from 10 to 3 mTorr, n/sub e/ decreased faster than linearly and below approximately 3 mTorr decreased linearly with pressure down to the lowest pressure of 0.4 mTorr. At 1 mTorr and 10 mA, measurements (with poor spatial resolution) were consistent with 10$sup 10$ total electrons and a central n/sub e/ of 10$sup 9$ electrons/cm$sup 3$. Neutron flux (at 50 keV) was about one sixth that of Hirsch (J. Appl. Phys. 38, 4522 (1967)). Six- vs. three-gun operation showed a small enhancement of both n/sub e/ and neutron flux that may indicate some particle trapping.
Date:
January 1, 1976
Creator:
Gardner, A. L.
System:
The UNT Digital Library
GRAIN REFINEMENT PRODUCED BY AN ALPHA PHASE ANNEAL OF BETA PHASE HEAT TREATED AND WATER QUENCHED URANIUM
During an experiment involving alpha phase annealing (at 610 to 655 deg C for 5 and 10 min) of beta-quenched uranium, it was determined that the relatively coarse, irregular shaped grains (0.08 to 0.150 mm in diameter) in the beta-quenched structure, were replaced by fine equiaxed grains (0.04 to 0.09 mm in diameter). (auth)
Date:
January 1, 1955
Creator:
Gardner, H.R.
System:
The UNT Digital Library
Reservoir enhancement on the impermeable margins of productive geothermal fields
This is the final report of a one-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos national Laboratory (LANL). The overall goal of the project was to evaluate the performance of Los Alamos technology in selected geothermal fields, to adapt the technology to the existing industry infrastructure where necessary, and to facilitate its application through demonstration and communication. The primary specific objective was to identify, collaborate, and partner with geothermal energy- producing companies in an evaluation of the application of Los Alamos microseismic mapping technology for locating fracture permeability in producing geothermal fields.
Date:
January 1, 1997
Creator:
Goff, S.; Gardner, J.; Dreesen, D. & Whitney, E.
System:
The UNT Digital Library
PAC (perturbed angular correlation) perturbation factor for spin 5/2 nuclei subject to a rapidly fluctuation EFC (electric field gradient)
We report numerical computations of the PAC perturbation factor G{sub 2}(t) for spin 5/2 nuclei subject to a static EFG symmetric about the z-axis and an additional axially-symmetric EFG hose symmetry axis fluctuates randomly among the x,y,z directions. For sufficiently large fluctuation rates, the numerical results are described by the expression for the static interaction alone with the addition of relaxation terms. Results of applying this model to {sup 111}Cd TDPAC measurements on tetragonal ZrO{sub 2} are described briefly. The model allows one to evaluate the probability that oxygen vacancies are trapped, the energy of association of vacancy-metal pairs, and the vacancy activation energy of motion. 4 refs., 3 figs.
Date:
January 1, 1990
Creator:
Evenson, W. E.; McKale, A. G.; Su, H. T. & Gardner, J. A.
System:
The UNT Digital Library
Report on the Carpenter Ridge District, Dolores Plateau Area, Colorado
A report on the survey of ore deposits in the Carpenter Ridge District, Dolores Plateau Area, Colorado.
Date:
January 1946
Creator:
Miller, Gardner B.
System:
The UNT Digital Library
Studies of Charged-Particle Distributions in an Electrostatic Confinement System. Progress Report, November 1, 1971--July 31, 1972
None
Date:
January 1, 1972
Creator:
Gardner, A. L.
System:
The UNT Digital Library
Role of Mass Selection and Mutagenic Treatment in Modern Corn Breeding.
None
Date:
January 1, 1969
Creator:
Gardner, C. O.
System:
The UNT Digital Library
Vibration and Shock, Highway Transport Between Santa Susana Mountains and Edwards Air Force Base
A road test, performed on a SNAP 10A mass mockup system, indicated that shock and vibration inputs under actual conditions were not excessive. During the course of travel from the Santa Susana field laboratory to Edwards Air Force Base, and during field trials at Santa Susana, the test system was subjected to only two accelerations exceeding 2 g, and no inputs exceeded 2.4 g. It was concluded that shock and vibration to SNAP systems from highway transporation can be adequately controlled by: selecting the appropriate vehicie, providing proper packaging; specifying route and speed limits for various driving conditions; using ordinary care in loading and unloading; and including suitable shock monitoring instruments with the shipment, (P.C.H.)
Date:
January 25, 1963
Creator:
Gardner, E. L.
System:
The UNT Digital Library
Studies of Charged-Particle Distributions in an Electrostatic Confinement System. Progress Report, August 1, 1972--March 31, 1974
None
Date:
January 1, 1974
Creator:
Gardner, A. L.
System:
The UNT Digital Library
Anticipation of Operating Problems in the Design of Heat Transfer Equipment.
None
Date:
January 1, 1972
Creator:
Gardner, Karl A.
System:
The UNT Digital Library
The Gravimetric Determination of Hydrogen in Molybdenum Metal
None
Date:
January 1, 1965
Creator:
Gardner, R. D.; Ashley, W. H. & Bergstresser, P.
System:
The UNT Digital Library
Petrographic analysis and correlation of volcanic rocks in Bostic 1-A well near Mountain Home, Idaho
Detailed examination of volcanic rock cuttings from the Bostic 1-A well near Mountain Home, Idaho, provides data that correlate the stratigraphy of the well with the regional stratigraphy of the western Snake River Plain. The Bostic 1-A well penetrates basalt of the Middle Pleistocene Bruneau Formation and underlying sedimentary rocks of the Upper Pliocene Glenns Ferry Formation. Basalt underlying the Glenns Ferry Formation is most likely Banbury Basalt of Middle Pliocene age or Banbury equivalent. A 350-ft interval of felsic volcanics is then intersected above another 600 ft of basalt. The well bottoms in altered felsic volcanics. The lowest 600 ft of basalt flows has not been correlated with any basalt observed on the surface. From the established stratigraphy of the region, and from petrographic evidence, the silicic volcanic rocks occurring both above and below the lowermost basalts in the well are probably lower Pliocene Idavada Volcanics. North of the well, in the Mt. Bennett Hills, Idavada Volcanics overlie crystalline rocks of the Idaho batholith. No estimate of depth to plutonic bedrock can be made from the well data alone. Stratigraphic comparisons suggest as little as 0.2 to 0.3 km more of Idavada lie beneath the Bostic 1-A well. Results …
Date:
January 1, 1984
Creator:
Arney, B.H.; Gardner, J.N. & Belluomini, S.G.
System:
The UNT Digital Library
Audio-magnetotelluric data log, and station location map for Thermo Known Geothermal Resource Area, Utah
The station locations are mapped and the observed apparent resistivity in ohm-meters is tabulated for each location over the frequency range of 7.5 to 18,600 cycles/sec. (WHK)
Date:
January 1, 1976
Creator:
Gardner, S.; Williams, J. M. & Long, C. L.
System:
The UNT Digital Library
Studying oxygen vacancies in ceramics by perturbed angular correlation spectroscopy
Perturbed angular correlation measurements in tetragonal and cubic zirconia and in ceria are described. A physically reasonable and self-consistent interpretation of these data implies that oxygen vacancies are trapped at a second neighbor position by Cd in tetragonal zirconia and by In in ceria. For Cd in tetragonal zirconia, the vacancy trap energy is found to be 0.44 eV, and the energy barrier between adjacent trap sites is approximately 0.8 eV. The activation energy of an oxygen vacancy hopping between trap sites around {sup 111}Cd in ceria is found to be 0.55 eV. The activation energy for oxygen vacancy hopping in cubic zirconia, as detected by {sup 181}Ta PAC, is about 1.0 eV and independent of the Y concentration. 12 refs., 4 figs.
Date:
January 1, 1990
Creator:
Su, Han-Tzong; Wang, Ruiping; Fuchs, H.; Gardner, J. A.; Evenson, W. E. & Sommers, J. A.
System:
The UNT Digital Library
Development and initial characterization of amorphous metals rich in W and/or RE
Studies of refractory metal alloys concentrated on two families of such alloys: ternary tungsten alloys and binary T/sub 5/-T/sub 9/ alloys. The former were selected because of the possibility of finding desirable glasses consisting of low-cost components; the latter were chosen because they could be quenched into metallic glasses with high thermal stability and good toughness. Alloys selected for study were prepared by arc-melting and were subsequently rapidly quenched in an arc furnace quenching unit. Considerable difficulties were encountered in preparing metal--metalloid alloys, such as W--B, as well as alloys combining high melting and low melting transition metals, such as W and Ni. Brittleness of ductility as revealed by a bend test was noted. Measurements were made up to 1000 K and resistivity measurements up to 1300 K. The probe for electrical resistivity measurements at high temperatures has been constructed and tested. To determine the elastic (Young's) moduli of new metallic glasses prepared in this program, equipment utilizing the pulse--echo method was set up.
Date:
January 1, 1978
Creator:
Giessen, B. C. & Polk, D. E.
System:
The UNT Digital Library
PAC (perturbed angular correlation) analysis of defect motion by Blume's stochastic model for I = 5/2 electric quadrupole interactions
Using Blume's stochastic model and the approach of Winkler and Gerdau, we have computed-time-dependent effects on perturbed angular correlation (PAC) spectra due to defect motion in solids in the case of I = (5/2) electric quadrupole interactions. We report detailed analysis for a family of simple models: XYZ + Z'' models, in which the symmetry axis of an axial efg is allowed to fluctuate among orientations along x, y, and z axes, and a static axial efg oriented along the z axis is added to the fluctuating efgs. When the static efg is zero, this model is termed the XYZ'' model. Approximate forms are given for G{sub 2}(t) in the slow and rapid fluctuation regimes, i.e. suitable for the low and high temperature regions, respectively. Where they adequately reflect the underlying physical processes, these expressions allow one to fit PAC data for a wide range of temperatures and dopant concentrations to a single model, thus increasing the uniqueness of the interpretation of the defect properties. Application of the models are given for zirconia and ceria ceramics. 14 refs.
Date:
January 1, 1990
Creator:
Evenson, W. E.; Gardner, J. A.; Wang, Ruiping; Su, Han-Tzong & McKale, A. G.
System:
The UNT Digital Library
Tory II-C reactor cold critical assembly program
Declassified 27 Nov 1973. The cold critical experiments with the Tory II-C reactor were performed in the critical facility of the Lawrence Radiation Laboratory at Livermore. The reactor is described briefly; the experimental equipment and the arrangement for the experiments is described in detail. The core poison was removed without difficulty, and criticality was achieved at 1624 hours July 14, 1965. With the design core configuration the shutdown margin was less than had been intended; criticality was attained at a shim rod bank position of 38.5 inches insertion rather than the expected 35 inches All Hastelloy tie tubes were replaced by Rene'-41. A heated core experiment with DELTA T = 129 plus or minus 7 deg F above room temperature provided a measure of the temperature coefficient which was found to be --3.9 x 10/sup -3/ plus or minus 7% inch of shim rod bank travel/ deg F. Other experiments included flux mapping, using fission foils, fission counters and copper flux wires, transients to determine control element worths, studies of flux spectrum by means of threshold detectors, and measurements of multiplication for various shutdown configurations for purposes of operational safety. Transient measurements, critical rod configurations, and flux distributions were also …
Date:
January 17, 1964
Creator:
Morton, J.R. III; Varljen, T.C.; Petruzzi, J. Jr.; Piowaty, J.M. & Gardner, L.L.
System:
The UNT Digital Library
Operating characteristics of rotating beds
Vapor-liquid contacting in high gravitational fields offers prospects for significant reductions in the physical size, capital, and operating costs of packed towers. Pressure drops, power requirements, mass transfer coefficients and liquid residence time distributions are reported for a rotating bed separator. The beds studied were rigid, foamed aluminum, with specific surface areas ranging from 650 to 3000 m{sup 2}/m{sup 2}. Gravitational fields were varied from 50 to 300g.
Date:
January 1, 1988
Creator:
Keyvani, M. & Gardner, N. C.
System:
The UNT Digital Library