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The Soviet American Gallium Experiment (SAGE)

Description: A radiochemical experiment using the reaction v/sub e/ = /sup 71/Ga + e/sup e/ to determine the integral flux of low-energy neutrinos from the sun is currently under preparation at the Baksan Neutrino Observatory in the USSR. Measurements are scheduled to commence by late 1988 using /approximately/30 tonnes of metallic gallium. With this amount of gallium it should be possible to obtain a fractional statistical accuracy of 12 to 15% after one year (assuming the standard solar model neutrino flux). While initial measurements are in progress, installation of the remaining 30 tonnes of gallium will proceed in order to perform the full 60 tonne experiment.
Date: January 1, 1988
Creator: Abazov, A.I.; Abdurashitov, D.N.; Anosov, O.P.; Avdeyev, A.V.; Belousko, Yu.I.; Bychuk, O.V. et al.
Partner: UNT Libraries Government Documents Department

The Baksan Neutrino Observatory Soviet-American Gallium Solar Neutrino Experiment

Description: A radiochemical /sup 71/Ga-/sup 71/Ge experiment to determine the integral flux of neutrinos from the sun is currently under preparation at the Baksan Neutrino Observatory in the USSR. Measurements are scheduled to commence by late 1988 with 30 tonnes of metallic gallium. A fractional statistical accuracy of 18% is expected to be obtained after one year of operation if the solar signal obtained after one year of operation if the solar signal is 70 SNU, the flux expected from p-p neutrinos alone. While initial measurements are in progress, 30 additional tonnes of gallium will be installed in order to perform the full experiment with a 60-tonne target. 28 refs.
Date: January 1, 1988
Creator: Abazov, A.I.; Abdurashitov, D.N.; Anosov, O.V.; Avdeyev, A.V.; Belouska, Yu. I.; Bychuk, O.V. et al.
Partner: UNT Libraries Government Documents Department

Spectrometer results from BNL E802

Description: Measurements of collisions of 14.5 GeV/c per nucleon /sup 28/Si ions with nuclear targets using the BNL E802 spectrometer are presented. A description of the experiment and preliminary particle production ratios are discussed. 3 figs., 1 tab.
Date: January 1, 1988
Creator: Abbott, T.; Akiba, Y.; Alburger, D.; Beavis, D.; Betts, R. R.; Birstein, L. et al.
Partner: UNT Libraries Government Documents Department

Results for strange particle production from BNL experiment E802

Description: Results are presented for inclusive measurements of ..pi.., K, proton and deuteron spectra from 14.5 A/center dot/GeV/c Si central collisions with Au targets. Pseudo-rapidity distributions of charged particles from a variety of targets are also shown. Ratios of K to ..pi.. yields are large and increase with p/sub /perpendicular// for Si + Au collisions. 4 refs., 11 figs.
Date: January 1, 1988
Creator: Abbott, T.; Akiba, Y.; Alburger, D.; Beavis, D.; Betts, R.R.; Birstein, L. et al.
Partner: UNT Libraries Government Documents Department

Results from the BNL E802 spectrometer for 14. 5 GeV/c per nucleon silicon beams

Description: We present selected results of measurements of inclusive ..pi.., K, proton, and deuteron spectra from 14.5 A GeV/c Si collisions with various targets. Results of neutral energy and charged particle dN/d/eta/ measurements are also discussed. Large K to ..pi.. ratios are observed in Si + Au collisions. Results are compared to the Lund-Fritiof model. 11 refs., 11 figs.
Date: January 1, 1988
Creator: Abbott, T.; Akiba, Y.; Alburger, D.; Beavis, D.; Betts, R.R.; Birstein, L. et al.
Partner: UNT Libraries Government Documents Department

Supercomputers and atomic physics data

Description: The advent of the supercomputer has dramatically increased the possibilities for generating and using massive amounts of detailed fine structure atomic physics data. Size, speed, and software have made calculations which were impossible just a few years ago into a reality. Further technological advances make future possibilities seem endless. The cornerstone atomic structure codes of R.D. Cowan have been adapted into a single code CATS for use on Los Alamos supercomputers. We provide a brief overview of the problem; and report a sample CATS calculation using configuration interaction to calculate collision and oscillator strengths for over 300,000 transitions in neutral nitrogen. We also discuss future supercomputer needs. 2 refs.
Date: January 1, 1988
Creator: Abdallah, J. Jr. & Clark, R.E.H.
Partner: UNT Libraries Government Documents Department

Determination of sin/sup 2/theta/sub w/ by muon neutrino and anti-neutrino scattering by electrons

Description: Total and differential cross sections for ..nu../sub ..mu../ and /bar /nu///sub ..mu../ elastic scattering by electrons were measured. The best value of sin/sup 2/theta/sub w/, obtained by fits to the differential distributions, was found to be sin/sup 2/theta/sub w/ = 0.195 +- 0.018 +- 0.013. 11 refs., 3 figs., 1 tab.
Date: January 1, 1988
Creator: Abe, K.; Ahrens, L.A.; Amako, K.; Aronson, S.H.; Beier, E.W.; Callas, J.L. et al.
Partner: UNT Libraries Government Documents Department

ORNL Implementation of New Health and Safety Requirements (DOE Order 5480. 11)

Description: New mandates in radiological protection outlined in DOE Order 5480. 11, include changes in the methodology for determining total radiation dose, ALARA program accountability, monitoring requirements, and standards for public entrance into controlled areas. The new order places distinct requirements concerning training at all DOE facilities. Radiation protection training requirements are addressed, including the effective communication of operations changes to all employees. This paper details the endeavors underway at ORNL in designing, developing, and delivering the training required by the new mandates. Strategies taken to reach the intended goals are explained. Efforts involve the design and implementation of the above mentioned radiation protection programs, a job-specific ALARA instructional package, and a Risk-Based Philosophy program matched to operational changes. 4 refs., 5 tabs.
Date: 1988~
Creator: Abercrombie, J. Steven
Partner: UNT Libraries Government Documents Department

Linear free energy relationships in glass corrosion

Description: Various theoretical models that have been proposed to correlate glass durability to their composition for a wide variety of silicate, borosilicate, and aluminosilicate glasses are examined. Comparisons are made between the predictions of these models and those of an empirical formulation extracted from existing data in the present work. The empirical approach provides independent confirmation of the relative accuracy of the silica release rate predictions of the different theoretical models in static leaching systems. Extension of the empirical approach used in this work are discussed. 23 refs., 2 figs., 1 tab.
Date: January 1, 1988
Creator: Abrajano, T. A. Jr.; Bates, J. K. & Bohlke, J. K.
Partner: UNT Libraries Government Documents Department

Amplified spontaneous emission and pulse train amplification in a KrF amplifier

Description: We present modeling status of pulse-train amplification experiments conducted at Sandia National Laboratory in Albuquerque (SNLA) with an e-beam pumped KrF laser amplifier. The laser geometry is such that the dominant amplified spontaneous emission (ASE) growth is along the propagation axis. Our numerical studies include the propagation of on axis co- and counter-propagating fields for both the pulse train and ASE simultaneously. The time-dependent gain, absorption, formation and quenching rates are obtained from a state-of-the-art kinetics code developed at Los Alamos National Laboratory (LANL). 12 refs., 12 figs.
Date: January 1, 1988
Creator: Ackerhalt, J.R.; Hanson, D.E.; Adams, R.G.; Raymond, T.D.; Reiser, C.; Rice, J.K. et al.
Partner: UNT Libraries Government Documents Department

The Control and Diagnostics System for the CEBAF Injector

Description: We present the first experience with the CEBAF injector control and diagnostics system. The computer architecture of the control system has been described elsewhere. The injector system is a model for the CEBAF controls. A computer system controls the gun, the steering magnets, and the focusing elements, and in the near future also the injector rf system. The beam parameters such as current, position, and emittance are measured by various monitors and are automatically analyzed by the computer.
Date: October 1, 1988
Creator: Adderley, P.; Barry, W.; Bork, R.; Cucinotta, R.; Grubb, C.; Heefner, J. et al.
Partner: UNT Libraries Government Documents Department

Evaluation of automated emergency response systems

Description: Automated Emergency Response (ER) systems are playing a greater role in providing prompt and reliable predictions of the impact of inadvertent releases of hazardous materials to the environment. Observed and forecast environmental and accident source term data are input into environmental transport and dispersion models to provide dosimetry estimates used as decision making aids for responding to emergencies. Several automated ER systems have been developed for US Federal Government facilities and many are available commercially. For such systems to be useful, they must reliably and consistently deliver a timely product to the decision makers. Evaluation of the entire ER system is essential to determine the performance that can be expected from the system during an emergency. Unfortunately, seldom are ER systems evaluated as a whole. Usually Quality Assurance programs evaluate the performance of individual components of the system. Most atmospheric pollution model evaluation methods usually involve an evaluation of the predictive performance of the transport and dispersion model when compared either with experimental tracer results or results from other models. Rarely, however, is the ability of the ER system to provide timely, reliable and consistent information evaluated. Such an evaluation is vital to determine the system performance during an emergency and to provide valuable information to aid in improving the system.
Date: 1988-09~
Creator: Addis, R. P.
Partner: UNT Libraries Government Documents Department

Savannah River Plant emergency response: Environmental transport and assessment

Description: The ability to evaluate rapidly the possible consequences of inadvertent releases of hazardous pollutants to the environment is vital for the safe operation of most industrial plants. The Savannah River Plant has developed an emergency response system which integrates environmental observations and computer predictions to provide relevant, reliable, and timely information to decision makers. Experience has shown that the interdependence of all components of an emergency response system requires that the system must be well integrated and coordinated. Research and development is an integral component of the Emergency Response Program. It is designed to increase knowledge of environmental transport and diffusion, and to develop technologies to improve the emergency response system. This paper describes the SRP emergency response system, discusses the importance of reliability through system integration, and indicates the role played by research and development in maintaining a vital emergency response system. 10 refs., 7 figs.
Date: January 1, 1988
Creator: Addis, R.P.
Partner: UNT Libraries Government Documents Department

EXERT and TEAM21: Partnerships for Professional Development

Description: This article discusses the process of developing professional development programs for educational leadership in response to the 1984 Texas Education Reform Bill, also known as House Bill 72.
Date: 1988
Creator: Adkison, Judith A.; Camp, William E. & Meeks, Bruce
Partner: UNT College of Education

Measurements of f/sub 1/(1285). -->. pi. /sup +/. pi. /sup /minus//. pi. /sup +/. pi. /sup /minus//, /eta//sub c/. -->. /rho//sup 0//rho//sup 0/ and /eta//sub c/. -->. f/sub 2/(1270)f/sub 2/(1270) in radiative J//psi/ decays

Description: A measurement of J//psi/ ..-->.. ..gamma pi../sup +/..pi../sup /minus//..pi../sup +/..pi../sup /minus// is presented. The f/sub 1/(1285) is observed and its spin and parity are investigated. The /eta//sub c/ is observed to decay to /rho//sup 0//rho//sup 0/, and that first observation of /eta//sub c/ decays to f/sub 2/(1270)f/sub 2/(1270) is presented. 1 ref., 3 figs.
Date: August 1, 1988
Creator: Adler, J.; Becker, J. J.; Blaylock, G. T.; Bolton, T.; Brient, J. C.; Brown, J. S. et al.
Partner: UNT Libraries Government Documents Department

A search for the decay D/sup 0/. -->. /bar K//sup 0/e/sup +/e/sup -/

Description: A search for the decay of the charmed neutral D-mesons D/sup 0/ ..-->.. /bar K//sup 0/e/sup +/e/sup -/ is presented, based on data collected at the /psi/(3770) resonance with the Mark III detector at SPEAR. The search does not show any evidence for the occurrence of this process, leading to an upper limit on the decay branching ratio of 1.7 /center dot/ 10/sup -3/ at the 90% confidence level. No other results on this decay channel have been reported so far. 10 refs., 1 fig.
Date: September 1988
Creator: Adler, J.; Becker, J. J.; Blaylock, G. T.; Bolton, T.; Brient, J. C.; Brown, J. S. et al.
Partner: UNT Libraries Government Documents Department

Linear induction acclerators for industrial applications

Description: In this paper, we will briefly discuss the principles of the induction accelerator and will describe our development program. The goals of our program are to improve system reliability and to reduce system cost. An accelerator presently under construction which embodies a number of industrial improvements will be described. Unique features are a low cost accelerator design, and an SCR switched, tubeless pulsed power system. 3 refs., 4 figs.
Date: January 1, 1988
Creator: Adler, R.J. & Bayless, J.R.
Partner: UNT Libraries Government Documents Department

Magnetic correlations in UPt/sub 3/ and U/sub 1-x/Th/sub x/Pt/sub 3/

Description: Neutron scattering experiments on UPt/sub 3/ and U/sub 1-x/Th/sub x/Pt/sub 3/ are reviewed. At relatively high energies (/approximately/5 MeV), the magnetic fluctuation spectrum is modulated by the structure factor derived from short-range antiferromagnetic correlations where the two U ions in each unit cell are oppositely polarized. In contrast, at low energies (less than or equal to 1 MeV), the diffuse inelastic scattering is associated with antiferromagnetic correlations where the unit cell is doubled. Nominally pure UPt/sub 3/ exhibits magnetic order with the wavevector corresponding to this doubling and a static moment of 0.02 +- 0.01 ..mu../sub B/. (U/sub 1-x/Th/sub x/)Pt/sub 3/ with x approx. = 0.05 exhibits ordering of the same type, but with a much larger static moment, 0.65 +- 0.1 ..mu../sub B/. Neutron scattering measurements on UPt/sub 3/ with implications for superconductivity are surveyed. 23 refs., 7 figs.
Date: January 1, 1988
Creator: Aeppli, G.; Bucher, E.; Goldman, A.I.; Shirane, G.; Broholm, C. & Kjems, J.K.
Partner: UNT Libraries Government Documents Department

Resonance Raman excitation profiles of polyacetylene/polyisoprene block co-polymers in toluene

Description: We have measured the resonance Raman spectra and excitation profiles of a soluble polyacetylene/polyisoprene block-copolymer in toluene solution. These are the first reported excitation profiles that have been referenced to an internal solvent standard, the toluene Raman bands. We find that this copolymer exhibits the same two bands in the C=C stretch region, i.e., 1463 and 1519 cm/sup /minus/1/, that have been attributed to a bimodal distribution in conjugation length for polyacetylene thin films. The 1519 cm/sup /minus/1/ peak has been associated with short chain segments of polyacetylene and we assign it to an average chain length of N=11 C=C's based on the frequency of the peak of its excitation profile. The excitation profile of the 1463 cm/sup /minus/1/ mode peaks at 2.15 eV corresponding to a chain length of 31 C=C's. Based on the relative integrated intensities of these two excitation profiles, our block copolymer contains a 35% mole fraction of long chain segments to short chain segments. In contrast to previous results, we find that the 1294 cm/sup /minus/1/ band, which is a mode with a mixture of C-C stretch and C-H deformation, is resonance enhanced, with an excitation profile that peaks at 2.6 eV, the same energy as the 1519 cm/sup /minus/1/ mode's profile. 2 figs.
Date: January 1, 1988
Creator: Agnew, S.F. & Aldissi, M.
Partner: UNT Libraries Government Documents Department

Transient of diffusion from a waste solid into fractured porous rock

Description: Previous analytical studies of the advective transport of dissolved contaminants through fractured rock have emphasized the effect of molecular diffusion in the rock matrix in affecting the space-time-dependent concentration of the contaminant as it moves along the fracture. Matrix diffusion only in the direction normal to the fracture surface was assumed. Contaminant sources were constant-concentration surfaces of width equal to the fracture aperture and of finite or infinite extent in the transverse direction. Such studies illustrate the far-field transport features of fractured media. To predict the time-dependent mass transfer from a long waste cylinder surrounded by porous rock and intersected by a fracture, the present study includes diffusion from the waste surface directly into porous rock, as well as the more realistic geometry. Here we present numerical results from Chambre's analytical solution for the time-dependent mass transfer from the cylinder, for the low-flow conditions wherein near-field mass transfer is expected to be controlled by molecular diffusion. 5 refs., 3 figs.
Date: January 1, 1988
Creator: Ahn, J.; Chambre, P.L. & Pigford, T.H.
Partner: UNT Libraries Government Documents Department

Polarized proton acceleration at the BNL AGS, 1988

Description: The present status of the polarized proton acceleration at the Brookhaven AGS is described. Some details regarding the tune-up and performance during the December 1987-January 1988 physics run are given. 2 refs., 4 figs.
Date: January 1, 1988
Creator: Ahrens, L.
Partner: UNT Libraries Government Documents Department

Operation of the AGS polarized beam

Description: A polarized proton physics run took place during January, 1988, at the Brookhaven AGS. It is the purpose of this paper to review the tune-up period preceding that run. This was the third such run at the AGS; the others occurred in June of 1984 and February of 1986. Some comparisons will be drawn among these. A thorough review of the history and hardware associated with the acceleration of polarized protons at the AGS can be found in the proceedings of the last meeting of this group at Protvino and will not be repeated here. 2 refs., 6 figs., 1 tab.
Date: January 1, 1988
Creator: Ahrens, L.A.
Partner: UNT Libraries Government Documents Department

Tissue responses to low protracted doses of high let radiations or photons: Early and late damage relevant to radio-protective countermeasures

Description: Early and late murine tissue responses to single or fractionated low doses of heavy charged particles, fission-spectrum neutrons or gamma rays are considered. Damage to the hematopoietic system is emphasized, but results on acute lethality, host response to challenge with transplanted leukemia cells and life-shortening are presented. Low dose rates per fraction were used in some neutron experiments. Split-dose lethality studies (LD 50/30) with fission neutrons indicated greater accumulation of injury during a 9 fraction course (over 17 days) than was the case for ..gamma..-radiation. When total doses of 96 or 247 cGy of neutrons or ..gamma.. rays were given as a single dose or in 9 fractions, a significant sparing effect on femur CFU-S depression was observed for both radiation qualities during the first 11 days, but there was not an earlier return to normal with dose fractionation. During the 9 fraction sequence, a significant sparing effect of low dose rate on CFU-S depression was observed in both neutron and ..gamma..-irradiated mice. CFU-S content at the end of the fractionation sequence did not correlate with measured LD 50/30. Sustained depression of femur and spleen CFU-S and a significant thrombocytopenia were observed when a total neutron dose of 240 cGy was given in 72 fractions over 24 weeks at low dose rates. The temporal aspects of CFU-S repopulation were different after a single versus fractionated neutron doses. The sustained reduction in the size of the CFU-S population was accompanied by an increase in the fraction in DNA synthesis. The proliferation characteristics and effects of age were different for radial CFU-S population closely associated with bone, compared with the axial population that can be readily aspirated from the femur. In aged irradiated animals, the CFU-S proliferation/redistribution response to typhoid vaccine showed both an age and radiation effect. 63 refs., 6 figs., ...
Date: January 1, 1988
Creator: Ainsworth, E.J.; Afzal, S.M.J.; Crouse, D.A.; Hanson, W.R. & Fry, R.J.M.
Partner: UNT Libraries Government Documents Department