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0. 9 a Gev /sup 238/U on /sup 238/U collisions in the LBL streamer chamber. Appendix A (open access)

0. 9 a Gev /sup 238/U on /sup 238/U collisions in the LBL streamer chamber. Appendix A

Charged particle exclusive data for high multiplicity U on U events are reported. Analyses are based on comparison with Cugnon's intranuclear cascade model, and the explosion-evaporation simulation of Fai and Randrup. The azimuthal structure of the observed events shows evidence of collective flow. The widely used flow angle methodology proves to be relatively insensitive to collective effects under the conditions of the present experiment. An isotropic pattern of ejectile emission is not reached at maximum multiplicity. 18 refs., 4 figs.
Date: January 1, 1984
Creator: Fung, S.Y.; Beavis, D.; Gorn, W.; Keane, D.; Liu, Y.M.; Poe, R.T. et al.
Object Type: Article
System: The UNT Digital Library
3-D treatment of convective flow in the earth's mantle (open access)

3-D treatment of convective flow in the earth's mantle

A three-dimensional finite-element method is used to investigate thermal convection in the earth's mantle. The equations of motion are solved implicitly by means of a fast multigrid technique. The computational mesh for the spherical problem is derived from the regular icosahedron. The calculation described use a mesh with 43,554 nodes and 81,920 elements and were run on a Cray X. The earth's mantle is modeled as a thick spherical shell with isothermal, free-slip boundaries. The infinite Prandtl number problem is formulated in terms of pressure, density, absolute temperature, and velocity and assumes an isotropic Newtonian rheology. Solutions are obtained for Rayleigh numbers up to approximately 10/sup 6/ for a variety of modes of heating. Cases initialized with a temperature distribution with warmer temperatures beneath speading ridges and cooler temperatures beneath present subduction zones yield whole-mantle convection solutions with surface velocities that correlate well with currently observed plate velocities. 8 references, 6 figures.
Date: May 1, 1984
Creator: Baumgardner, J.R.
Object Type: Article
System: The UNT Digital Library
5 K neutron irradiation and thermal cycling of NbTi superconductors (open access)

5 K neutron irradiation and thermal cycling of NbTi superconductors

Simulation experiments of magnet operating conditions in a fusion reactor are reported. After approximately half of the lifetime dose the results on a variety of NbTi superconductors show moderate changes of the critical current density j/sub c/ (approx. 10%), the percentage change of j/sub c/ is always larger at high fields (8 T) than at 5 T. After a rapid initial change the resistivity ratios of the Cu-stabilizer are found to decrease only slowly with increasing neutron fluence.
Date: May 1, 1984
Creator: Hahn, P.; Hoch, H.; Weber, H. W.; Birtcher, R. C. & Brown, B. S.
Object Type: Article
System: The UNT Digital Library
6. 5 Tesla SSC lattice example (open access)

6. 5 Tesla SSC lattice example

This note presents an example SSC collider lattice for 20 TeV proton beams using 6.5 Tesla double bore magnets, six collision points, and anti-symmetric insertions.
Date: January 1, 1984
Creator: Garren, A.A.
Object Type: Article
System: The UNT Digital Library
O(18) revived (open access)

O(18) revived

We present an O(18) theory which is pertubatively unifiable and which accounts for the absence of right-handed families in the low-energy world. The model gives rise to dramatic predictions for proton decay and for the Z/sup 0/ width.
Date: August 1, 1984
Creator: Bagger, J.; Dimopoulos, S. & Masso, E.
Object Type: Article
System: The UNT Digital Library
25. mu. A pulsed polarized H/sup -/ ion source (open access)

25. mu. A pulsed polarized H/sup -/ ion source

A Haeberli-type pulsed polarized negative hydrogen source has been brought into operation at the BNL Alternating Gradient Synchrotron. It operates reliably at beam currents sometimes as high as 25 ..mu..A and 20 keV in beam pulses of 500 ..mu..sec with approximately 75% polarization. These beam intensities are about an order of magnitude higher than the original Haeberli source built at the University of Wisconsin. This improvement is caused by the higher densities of both the atomic hydrogen beam and the cesium beam, which are the basic ingredients in the charge exchange reaction. About half the beam (10 to 15 ..mu..A) is accelerated in the 200 MeV linac and injected into the AGS. 3 references, 3 figures.
Date: January 1, 1984
Creator: Alessi, J.; Kponou, A. & Sluyters, T.
Object Type: Article
System: The UNT Digital Library
60 GHz, 200 kW CW gyrotron with high output mode purity (open access)

60 GHz, 200 kW CW gyrotron with high output mode purity

For the first time, a Varian 60 GHz gyrotron, designed specifically to generate microwaves in a single output mode, has been operated at power levels up to 200 kW CW. High output mode purity is required for the efficient utilization of gyrotrons as high power microwave sources for electron cyclotron resonance heating (ECRH) in magnetic fusion plasmas. Using mode-specific directional couplers, measurements of the output mode content indicated that greater than 95% of the microwave output was in the desired TE/sub 02/ mode, with only small percentages in the neighboring TE/sub 01/ and TE/sub 03/ circular electric modes. The pure mode CW design uses a 2.5-inch diameter collector. The collector has a magnetic field arrangement which capably avoids excessive heating by distributing the 640 kW CW beam over a sufficient collector area. With pure mode operation, window temperatures are 10/sup 0/C to 15/sup 0/C higher than with mixed mode operation.
Date: January 1, 1984
Creator: Jory, H.; Felch, K.; Bier, R.; Fox, L.; Huey, H.; Ives, L. et al.
Object Type: Article
System: The UNT Digital Library
100 MHz fiber optic single transient gamma ray detection system (open access)

100 MHz fiber optic single transient gamma ray detection system

A fiber optic system has been developed to measure single transient gamma rays. The gamma ray signature is converted to light by the Cerenkov process in a 20 cm length of radiation resistant optical fiber. The signal is transmitted over 1 km of optical fiber and detected by state-of-the-art, 175 MHz analog receivers. The receivers are based on silicon PIN detectors with transimpedance hybrid amplifiers and two stages of power amplification. The dc coupled receivers have less than 2% distortion up to 5 volts with less than 10 mV rms noise and a responsivity of 37,500 V/watt at 800 nm. A calibration system measures relative fiber to fiber transit time delays and ''system'' sensitivity. System bandwidth measurements utilized an electron linear accelerator (Linac) with a 50 ps electron pulse as the Cerenkov light source. The system will be described with supporting calibrationa and characterization data of parts of the system and the whole system.
Date: January 1, 1984
Creator: Ogle, J. W.; Smith, R. C.; Ward, M.; Ramsey, R. & Hollabaugh, J.
Object Type: Article
System: The UNT Digital Library
650 mm long liquid hydrogen target for use in a high intensity electron beam (open access)

650 mm long liquid hydrogen target for use in a high intensity electron beam

This paper describes a 650 mm long liquid hydrogen targetr constructed for use in the high intensity electron beam at the Stanford Linear Accelerator Center (SLAC). The main design problem was to construct a target that would permit the heat deposited by the electron beam to be removed rapidly without boiling the hydrogen so as to maintain constant target density for optimum data taking. Design requirements, cosntruction details and operating experience are discussed.
Date: February 1, 1984
Creator: Mark, J.W.
Object Type: Article
System: The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 13, No. 22, Ed. 1 Thursday, March 1, 1984 (open access)

15th Street News (Midwest City, Okla.), Vol. 13, No. 22, Ed. 1 Thursday, March 1, 1984

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date: March 1, 1984
Creator: Spain, Nathan
Object Type: Newspaper
System: The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 14, No. 8, Ed. 1 Thursday, November 1, 1984 (open access)

15th Street News (Midwest City, Okla.), Vol. 14, No. 8, Ed. 1 Thursday, November 1, 1984

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date: November 1, 1984
Creator: Shanks, Doris
Object Type: Newspaper
System: The Gateway to Oklahoma History
1982 bibliography of atomic and molecular processes (open access)

1982 bibliography of atomic and molecular processes

This annotated bibliography includes papers on atomic and molecular processes published during 1982. Sources include scientific journals, conference proceedings, and books. Each entry is designated by one or more of the 114 categories of atomic and molecular processes used by the Controlled Fusion Atomic Data Center, Oak Ridge National Laboratory to classify data. Also indicated is whether the work was experimental or theoretical, what energy range was covered, what reactants were investigated, and the country of origin of the first author. Following the bibliographical listing, the entries are indexed according to the categories and according to reactants within each subcategory.
Date: May 1, 1984
Creator: Barnett, C. F.; Crandall, D. H.; Gilbody, H. B.; Gregory, D. C.; Kirkpatrick, M. I.; McDaniel, E. W. et al.
Object Type: Report
System: The UNT Digital Library
1983 environmental monitoring report (open access)

1983 environmental monitoring report

The environmental levels of radioactivity and other pollutants found in the vicinity of BNL during 1983 are summarized. The amounts of radioactivity and other pollutants released in airborne and liquid effluents from Laboratory facilities to the environment are also indicated. The environmental data includes external radiation levels; radioactivity of air particulates; tritium concentrations; the amounts and concentrations of radioactivity in and the water quality of the stream into which liquid effluents are released; the concentrations of radioactivity in biota from the stream; the concentrations of radioactivity in and the water quality of ground waters underlying the Laboratory; and concentrations of radioactivity in milk samples obtained in the vicinity of the Laboratory. The amounts of radioactivity released in airborne and liquid effluents from laboratory facilities to the environment were within allowable standards as stipulated in DOE Order 5480.1. Other pollutants, such as metals, organic compounds, etc., in the effluents released from the Laboratory were well below federal, state and local standards as applied to site specific conditions. 34 references, 9 figures, 17 tables.
Date: June 1, 1984
Creator: Day, L.E. & Naidu, J.R. (eds.)
Object Type: Report
System: The UNT Digital Library
1983 environmental monitoring report, Sandia National Laboratories, Albuquerque, New Mexico (open access)

1983 environmental monitoring report, Sandia National Laboratories, Albuquerque, New Mexico

Sandia National Laboratories (SNL) is located south of Albuquerque on Kirtland Air Force Base. Because radionuclides are potentially released from its research activities, SNL has a continuing environmental monitoring program which analyzes for cesium-137, tritium, uranium, alpha emitters, and beta emitters in water, soil, air, and vegetation. Measured radiation levels in public areas were consistent with local background in 1983. The Albuquerque population received an estimated 0.250 person-rem from airborne radioactive releases, whereas it received greater than 49,950 person-rem from naturally occurring radionuclides. 23 references, 6 figures, 15 tables.
Date: April 1, 1984
Creator: Millard, G. C.; Gray, C. E. & O'Neal, B. L.
Object Type: Report
System: The UNT Digital Library
1984 Federal Interim Storage fee study: a technical and economic analysis (open access)

1984 Federal Interim Storage fee study: a technical and economic analysis

JAI examined alternative methods for structuring charges for Federal Interim Storage (FIS) services were examined and the conclusion reached that the combined interests of the Department and the users would be best served, and costs most appropriately recovered, by a two-part fee involving an Initial Payment upon execution of a contract for FIS services followed by a Final Payment upon delivery of the spent fuel to the Department. The Initial Payment would be an advance payment covering the pro rata share of preoperational costs, including (1) the capital costs of the required transfer facilities and storage area, (2) development costs, (3) government administrative costs including storage fund management, and (4) impact aid payments made in accordance with section 136(e) of the Act. The Final Payment would be made at the time of delivery of the spent fuel to the Department and would be calculated to cover the sum of the following: (1) any under-or over-estimation in the costs used to calculate the Initial Payment of the fee including savings due to rod consolidation), (2) module costs (i.e., storage casks, drywells, or silos), and (3) the total estimated cost of operation and decommissioning of the FIS facilities (including government administrative costs, …
Date: July 1, 1984
Creator: E.R. Johnson Associates, Inc
Object Type: Report
System: The UNT Digital Library

[1st & 2nd S.B. Street House]

Photograph of the 1st & 2nd S.B. Street House (located at 800-804 3rd St) in Graham, Texas.
Date: February 1, 1984
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History

[1st Methodist Episcopal]

Photograph of the 1st Methodist Episcopal (located at 405 W 8th) in Cisco, Texas.
Date: May 1, 1984
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History

[1st S.B Street House]

Photograph of the 1st S.B Street House (located at 804 3rd St) in Graham, Texas.
Date: February 1, 1984
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History

[2nd & 1st S.B. Street House]

Photograph of the 2nd & 1st S.B. Street House (located at 800-804 3rd St) in Graham, Texas.
Date: February 1, 1984
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History

[2nd S.B. Street House]

Photograph of the 2nd S.B. Street House (located at 800 3rd St) in Graham, Texas.
Date: February 1, 1984
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History

[2nd S.B. Street House]

Photograph of the 2nd S.B. Street House (located at 800 3rd St) in Graham, Texas.
Date: April 1, 1984
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History

[2nd S.B. Street House]

Photograph of the 2nd S.B. Street House (located at 800 3rd St) in Graham, Texas.
Date: February 1, 1984
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History

[2nd S.B. Street House]

Photograph of the 2nd S.B. Street House (located at 800 3rd St) in Graham, Texas.
Date: February 1, 1984
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History

[2nd S.B. Street House]

Photograph of the 2nd S.B. Street House (located at 800 3rd St) in Graham, Texas.
Date: February 1, 1984
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History