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Proceedings of the 1977 Isabelle Summer Workshop. [Seventy-four papers]

Description: A report is given of the activities of the 1977 ISABELLE Summer Workshop, held from July 18 to 29, 1977 at the Brookhaven National Laboratory. An abstract was prepared for each of the seventy-four separate presentations for inclusion in DOE Energy Research Abstracts (ERA). (PMA)
Date: July 18, 1977
Partner: UNT Libraries Government Documents Department
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Review of experiments

Description: A study was made to examine the effects which raising the ISA from 200 x 200 GeV to 400 x 400 GeV would have on the ''canonical'' experiments. These were ''canonical'' in the sense that they span the full range of foreseeable physics and have served as topics in previous Summer Studies and Workshops which resulted in quite explicit hardware designs and experimental goals. The study results indicate that all of the ''canonical'' experiments survive. Some are actually improved, some are unaffecte… more
Date: August 18, 1977
Creator: Chang, C.; Yodh, G.; Cutts, D.; Lanou, R.; Engels, E.; Kramer, M. et al.
Partner: UNT Libraries Government Documents Department
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Workshop on photon activation therapy: proceedings

Description: This Workshop was held concurrently with an IAEA Research Coordination Meeting on Exploration of the Possibility of High-LET Radiation for Non-conventional Radiotherapy in Cancer. The Workshop on Photon Activation Therapy (PAT) was given as a special session on April 18, as it was thoght PAT might eventually be found to be attractive to developing countries, which is a major concern of the IAEA. An effort was made to bring together representatives of the various groups known to be actively work… more
Date: April 18, 1985
Creator: Fairchild, R.G. (ed.)
Partner: UNT Libraries Government Documents Department
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Silver isotopic anomalies in iron meteorites: cosmic-ray production and other possible sources

Description: The sources of excess /sup 107/Ag observed in iron meteorites by Kaiser, Kelly, and Wasserburg (1980) are examined, with emphasis on the reactions of cosmic-ray particles with palladium. The cross sections for the production of the silver isotopes from palladium by energetic cosmic-ray particles are evaluated or estimated and used to calculate spallogenic production rates relative to that of /sup 53/Mn from iron. The upper limit for the production rate of excess /sup 107/Ag by galactic-cosmic-r… more
Date: April 18, 1980
Creator: Reedy, R. C.
Partner: UNT Libraries Government Documents Department
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Fast optical shutters for Nova, a high power fusion laser

Description: Preliminary design and performance test results for fast optical shutters intended for use in the Nova high power fusion laser system are briefly described. Both an opening shutter to protect the pellet target from amplified spontaneous emission (ASE), and a closing shutter to protect the laser from light reflected back from the target are discussed. Faraday rotators, synchronized by a 400 Hz oscillator, provide an opening shutter mechanism with an opening time of approximately 10 ..mu..s. A pl… more
Date: October 18, 1977
Creator: Bradley, L. P.; Gagnon, W. L. & Carder, B. M.
Partner: UNT Libraries Government Documents Department
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25 megajoule energy storage and delivery system for the Shiva laser

Description: A 25 megajoule, 20 kV capacitive energy storage and delivery system has been built and tested for Shiva--a 20 arm, 10 kJ, 20 TW neodymium glass fusion research laser. This system supplies over 3.5 megamperes to xenon flashlamps for optical pumping of the laser amplifier. About 15% of the energy is used to establish magnetic fields within Faraday rotator glass. A digital based control and diagnostics scheme is employed through the entire pulse power system. This scheme utilizes a distributed dig… more
Date: October 18, 1977
Creator: Gagnon, W.L.; Rupert, P. R.; Berkbigler, L.; Carder, B. M.; Gritton, D. G.; Holloway, R. W. et al.
Partner: UNT Libraries Government Documents Department
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Brillouin scatter in laser-produced plasmas

Description: The absorption of intense laser light is found to be reduced when targets are irradiated by 1.06 ..mu..m light with long pulse widths (150-400 psec) and large focal spots (100-250 ..mu..m). Estimates of Brillouin scatter which account for the finite heat capacity of the underdense plasma predict this reduction. Spectra of the back reflected light show red shifts indicative of Brillouin scattering.
Date: July 18, 1977
Creator: Phillion, D.W.; Kruer, W.L. & Rupert, V.C.
Partner: UNT Libraries Government Documents Department
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General purpose computers in real time

Description: I see three main trends in the use of general purpose computers in real time. The first is more processing power. The second is the use of higher speed interconnects between computers (allowing more data to be delivered to the processors). The third is the use of larger programs running in the computers. Although there is still work that needs to be done, I believe that all indications are that the online need for general purpose computers should be available for the SCC and LHC machines. 2 fig… more
Date: September 18, 1989
Creator: Biel, J.R.
Partner: UNT Libraries Government Documents Department
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Report of Working Group on Accelerator Problems

Description: There are many experimental elementary particle objectives which are uniquely achievable with polarized proton beams. These objectives require both higher beam energies and intensities than are presently available. The polarized ion source working group concluded that it looks quite practical to produce polarized H sources with output currents of several mA. The significance of this is best demonstrated by the fact that the ZGS operates at its space charge limit using a 6 mA H/sup -/ impolarize… more
Date: October 18, 1977
Creator: Cho, Y.; Montague, B. W.; Kubischta, W.; Turrin, A.; Courant, E. D. & Ratner, L.
Partner: UNT Libraries Government Documents Department
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Design and test of a 40-kV, 80-A, 10-msec, neutral-beam power supply series

Description: To meet neutral-beam source requirements, a combination series switch/regulator system has been developed that can provide up to 40-kV at 80A output for 10-ms from the continuously decaying voltage of a charged capacitor bank. The system uses 100% feedback control of a series hard tube regulator. This feedback regulator is able to maintain a 40-kV output level for 100% load variations while the source voltage for the capacitor bank is drained from an initial 55-kV down to as low as 43-kV during… more
Date: October 18, 1977
Creator: North, G.G.
Partner: UNT Libraries Government Documents Department
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Summary of S = 0 dibaryon resonances and candidates

Description: Experimental data concerning S = O dibaryon resonances are reviewed, with an emphasis on the nucleon-nucelon system. Structures observed in the ..gamma..d channel, the ..pi..d elastic scattering, pp ..-->.. ..pi..d channel, and other channels are discussed. Experimental data are compared with various theories. The short-range forces can be represented by dibaryon resonances. Further measurements to clarify the understanding of dibaryons are also discussed. 53 refs., 24 figs.
Date: April 18, 1985
Creator: Yokosawa, A.
Partner: UNT Libraries Government Documents Department
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Hybrid Simulations With Dynamical Quarks: Spectra, Screening and Thermodynamics

Description: We summarize simulations made by the Argonne/University of Illinois group using the Hybrid algorithm to include dynamical staggered fermions. Recent work on the mass spectrum and screening effects due to the inclusion of four light flavors of dynamical quarks is presented. We also present a brief overview of what we have learned about the finite temperature chiral phase transition. 5 refs., 4 figs., 1 tab.
Date: November 18, 1987
Creator: Sinclair, D. K.
Partner: UNT Libraries Government Documents Department
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Structure of solid surfaces and of adsorbates by low-energy electron diffraction

Description: LEED theory has developed to the point where the diffraction beam intensities can be computed using the locations of the surface atoms as the only adjustable parameters. The position of atoms in many clean monatomic solid surfaces and the surface structures of ordered monolayers of adsorbed atoms have been determined this way. Surface crystallography studies are now extended to small hydrocarbon molecules that are adsorbed on metal surfaces. These studies are reviewed. (GHT)
Date: October 18, 1977
Creator: Somorjai, G.A.
Partner: UNT Libraries Government Documents Department
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Effects of flow on density profiles in laser irradiated plasmas

Description: When the plasma outflow velocity relative to the critical surface is supersonic, compressional density profiles can form in the critical region. These compressions involve dissipative processes like those in collisionless shocks; associated plasma instabilities and reflected ions may inhibit energy transport and enhance laser light absorption.
Date: October 18, 1977
Creator: Max, C.E. & McKee, C.F.
Partner: UNT Libraries Government Documents Department
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TSTA compound cryopump

Description: The Tritium System Test Assembly (TSTA), at the Los Alamos Scientific Laboratory, is intended to demonstrate realistic fuel supply and cleanup scenarios for future fusion reactors. The vacuum pumps must be capable of handling large quantities of reactor exhaust gases consisting largely of mixtures of hydrogen and helium isotopes. Cryocondensing pumps will not pump helium at 4.2 K; while cryosorption pumps using molecular sieves or charcoal have good helium pumping speed, the adsorbent clogs wit… more
Date: August 18, 1980
Creator: Batzer, T. H.; Patrick, R. E. & Call, W. R.
Partner: UNT Libraries Government Documents Department
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Beam bunching in a final storage ring

Description: A calculation is presented for the final bunching of a particle beam in a synchrotron or storage ring. The voltage per turn, the harmonic number, and the bunching time are obtained. (PMA)
Date: November 18, 1977
Creator: Lambertson, G.R.
Partner: UNT Libraries Government Documents Department
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Availability of enriched stable isotopes: present status and future prospects

Description: The Electromagnetic Isotope Enrichment Facility (EMIEF) is currently used to produce 225 enriched stable isotopes of 50 elements. Among these are included most of the known elements with stable isotopes except for the noble gases, certain light elements, monisotopic elements, etc. The EMIEF can also be used to produce enriched samples of radioactive species, most notably the isotopes of uranium and plutonium. These enriched materials are placed in either the Sales Inventory of in the Research M… more
Date: September 18, 1986
Creator: Hoff, R.W.
Partner: UNT Libraries Government Documents Department
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Near-real-time actinide concentrations via energy dispersive XRFA for process control and material accountability

Description: A Co-57 based XRFA system has been installed on-line at ICPP to monitor uranium concentrations after first cycle decontamination. A small, medium, or large collimator is used to restrict fission product (fp) background count rates. Using two 50 mCi sources, 1 gU/1 can be measured to +-2% in 10 min with the medium collimator. A computer-based MCA runs the system automatically, controls an insertable U foil (allows calibration anytime) and an automatic W shutter (permits removal of fp background)… more
Date: November 18, 1983
Creator: Camp, D. C.; Ruhter, W. D.; Johnson, C. E. & Piper, T. C.
Partner: UNT Libraries Government Documents Department
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Comments Concerning "Study of Molecular Interaction in Binary Liquid Mixtures of Ethyl Acetoacetate with Chloroform and Dimethylsulphoxide using Excess Acoustic Parameters and Spectroscopic Methods

Description: Article commenting on a previously published article, "Study of molecular interaction in binary liquid mixtures of ethyl acetoacetate with chloroform and dimethylsulphoxide using excess acoustic parameters and spectroscopic methods."
Date: February 18, 2014
Creator: Acree, William E. (William Eugene) & Stephens, Timothy W.
Partner: UNT College of Arts and Sciences
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The Use of Genetics for the Management of a Recovering Population: Temporal Assessment of Migratory Peregrine Falcons in North America

Description: Article on the use of genetics for the management of a recovering population and a temporal assessment of migratory peregrine falcons in North America.
Date: November 18, 2010
Creator: Johnson, Jeff A.; Talbot, Sandra Looman; Sage, George K.; Burnham, Kurt K.; Brown, Joseph W.; Maechtle, Tom L. et al.
Partner: UNT College of Arts and Sciences
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Coatings for laser fusion

Description: Optical coatings are used in lasers systems for fusion research to control beam propagation and reduce surface reflection losses. The performance of coatings is important in the design, reliability, energy output, and cost of the laser systems. Significant developments in coating technology are required for future lasers for fusion research and eventual power reactors.
Date: December 18, 1981
Creator: Lowdermilk, W.H.
Partner: UNT Libraries Government Documents Department
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Evolution of the mirror machine

Description: The history of the magnetic-mirror approach to a fusion reactor is primarily the history of our understanding and control of several crucial physics issues, coupled with progress in the technology of heating and confining a reacting plasma. The basic requirement of an MHD-stable plasma equilibrium was achieved following the early introduction of minimum-B multipolar magnetic fields. In refined form, the same magnetic-well principle carries over to our present experiments and to reactor designs.… more
Date: August 18, 1983
Creator: Damm, C. C.
Partner: UNT Libraries Government Documents Department
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Shock Hugoniot measurements on Ta to 0. 78 TPa

Description: Symmetric impact shock Hugoniot measurements have been made on Ta with an electrically exploded foil gun system. The results obtained to date for the Hugoniot of Ta cover the range 0.19 to 0.78 TPa (impact velocities from 4.0 to 9.7 km/s) and agree with data obtained by other researchers to within 2.7% rms. Recent improvements in the system include electromagnetic shielding of impactor and target, continuous measurement of impactor velocity with a Fabry-Perot interferometer and computer-aided a… more
Date: August 18, 1983
Creator: Froeschner, K. E.; Lee, R. S.; Chau, H. H. & Weingart, R. C.
Partner: UNT Libraries Government Documents Department
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