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Development of 400- to 450-MHz RFQ resonator-cavity mechanical designs

Description: In the development of the radio-frequency quadrupole (RFQ) linac, the resonator cavity's mechanical design may be a challenge similar in magnitude to that of the development of the accelerator structure itself. Experience with the all-copper 425-MHz RFQ proof-of-principle linac has demonstrated that the resonator cavity must be structurally stiff and easily tunable. This experience has led to development of copper-plated steel structures having vanes that may be moved within a cylinder for tuni… more
Date: January 1, 1982
Creator: Hansborough, L.D.
Partner: UNT Libraries Government Documents Department
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Acoustic agglomeration of power plant fly ash. Final report

Description: The work has shown that acoustic agglomeration at practical acoustic intensities and frequencies is technically and most likely economically viable. The following studies were performed with the listed results: The physics of acoustic agglomeration is complex particularly at the needed high acoustic intensities in the range of 150 to 160 dB and frequencies in the 2500 Hz range. The analytical model which we developed, although not including nonlinear acoustic efforts, agreed with the trends obs… more
Date: January 1, 1982
Creator: Reethof, G. & McDaniel, O.H.
Partner: UNT Libraries Government Documents Department
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Microfaunal evidence of age and depositional environments of the Cerro Prieto section (Plio-Pleistocene), Baja California, Mexico

Description: Microfossils including benthic and planktic foraminifera, ostracodes, calcareous algae, fish skeletal material, and fragments of pelecypods were found in 14 core samples from depths of 185 to 1952 m in the Cerro Prieto geothermal field, providing evidence of both the age and depositional history of sediments comprising the 3000-m-thick Pliocene and Pleistocene section in this area. Ostracodes of brackish water and marine origin constitute the most common microfossils present in this sequence oc… more
Date: January 1, 1982
Creator: Ingle, J.C. Jr.
Partner: UNT Libraries Government Documents Department
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Electron bremsstrahlung angular-distribution fits for atomic numbers 1 less than or equal to Z less than or equal to 92, and incident-electron energies 1 keV less than or equal to T less than or equal to 500 keV

Description: The analytic fit of a simple expression to the electron bremsstrahlung angular distribution cross section d/sup 2/sigma/dkd..cap omega.. (differential in the emitted photon energy k and angle ..cap omega..) is investigated. Optimal choices for the fit parameters are determined and fit coefficients are tabulated for a large number of neutral-atom cases. Results are also presented for fits to the relativistic Coulomb-Born approximation. Comparisons between the screened neutral-atom results and th… more
Date: January 1, 1982
Creator: Kissel, L.
Partner: UNT Libraries Government Documents Department
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Development of a procedure to estimate runoff and sediment transport in ephemeral streams

Description: A distributed hydrologic model for application on small, semiarid watersheds is developed. The distributed model incorporates simplified routing schemes to include the influence of transmission losses on runoff. A sediment transport model, by sediment size fractions, is developed to compute transport capacity and sediment yield in noncohesive, alluvial channels. Based on available information published in soils and topographic maps and on channel and bed sediment characteristics, the procedure … more
Date: January 1, 1982
Creator: Lane, L.J.
Partner: UNT Libraries Government Documents Department
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Collisionally excited few-electron systems: theoretical introduction and survey. [2-200 keV]

Description: We consider excitation, ionization, and charge transfer in collisions of protons (and antiprotons) with the single-electron targets H, He/sup +/, and Li/sup 2 +/. These collisions are first compared to other types of ion-atom collisions. A brief review of our own theoretical method is given; in particular we describe how we allow for both large charge transfer and ionization probabilities while retaining the computational efficiency that allows us to consider a variety of collision partners and… more
Date: January 1, 1982
Creator: Ford, A.L.; Reading, J.F. & Becker, R.L.
Partner: UNT Libraries Government Documents Department
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Analytical theory of ion-temperature-gradient instability

Description: The relationship between the threshold values of ion-temperature-gradient instabilities and the temperature parameters of plasmas is investigated analytically in slab and toroidal geometries separately. It is found that the threshold values increase rapidly when the ion temperature becomes much higher than the electron temperature. The change of the threshold vaues with respect to the ion temperature is quite similar for both geometric models. This finding is consistent with PLT observations. F… more
Date: January 19, 1982
Creator: Guo, S.; Shen, J.; Chen, L. & Tsai, S.T.
Partner: UNT Libraries Government Documents Department
open access

Accelerator technology program. Progress report, July-December 1980

Description: The activities of Los Alamos National Laboratory's Accelerator Technology Division are discussed. This report covers the last six months of calendar 1980 and is organized around the Division's major projects. These projects reflect a wide variety of applications and sponsors. The major technological innovations promoted by the Pion Generator for Medical Irradiation (PIGMI) program have been developed; accelerator technologies relevant to the design of a medically practical PIGMI have been ident… more
Date: January 1, 1982
Creator: Knapp, E.A. & Jameson, R.A. (comp.)
Partner: UNT Libraries Government Documents Department
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Population and decay of high-spin states in /sup 157-161/Yb: evolution of nuclear shapes as a function spin and neutron number

Description: The population and decay of the entry states in /sup 157-161/Yb and /sup 155-158/Er from the reactions of 136- and 149-MeV /sup 20/Ne with /sup 144/Nd and /sup 146/Nd have been investigated with the Spin Spectrometer gated with a Ge detector. Statistical-model calculations reproduce the main features of the entry state populations. The entry lines, <E/sup */> as a function of multiplicity, M/sub ..gamma../ show changes in slope at high M/sub ..gamma../ which are due to changes in the decay mode… more
Date: January 1, 1982
Creator: Jääskeläinen, M.; Sarantites, D. G.; Dilmanian, F .A.; Woodward, R.; Puchta, H.; Beene, J. R. et al.
Partner: UNT Libraries Government Documents Department
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Thermonuclear model for x-ray transients

Description: The thermonuclear evolution of a 1.41 M sub solar neutron star accreting both solar and metal-deficient mixtures of hydrogen, helium, and heavy elements at rates ranging from about 10/sup -11/ to 10/sup -10/ M sub solar per year is examined using a one-dimensional numerical model. The metal deficient compositions may result either from placement of the neutron star in a binary system with a Population II red giant or from gravitational settling of heavy ions in the accreted material. For such a… more
Date: January 1, 1982
Creator: Wallace, R. K.; Woosley, S. E. & Weaver, T. A.
Partner: UNT Libraries Government Documents Department
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Geologic evolution of the Jemez Mountains and their potential for future volcanic activity

Description: Geophysical and geochemical data and the geologic history of the Rio Grande rift and the vicinity of the Jemez Mountains are summarized to determine the probability of future volcanic activity in the Los Alamos, New Mexico area. The apparent cyclic nature of volcanism in the Jemez Mountains may be related to intermittent thermal inputs into the volcanic system beneath the region. The Jemez lineament, an alignment of late Cenozoic volcanic centers that crosses the rift near Los Alamos, has playe… more
Date: January 1, 1982
Creator: Burton, B. W.
Partner: UNT Libraries Government Documents Department
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Low- to Moderate-Temperature Geothermal Resource Assessment for Nevada: Area Specific Studies, Pumpernickel Valley, Carlin and Moana. Final Report June 1, 1981-July 31, 1982

Description: Geological, geophysical and geochemical surveys were used in conjunction with temperature gradient hole drilling to assess the geothermal resources in Pumpernickel Valley and Carlin, Nevada. This program is based on a statewide assessment of geothermal resources that was completed in 1979. The exploration techniques are based on previous federally-funded assessment programs that were completed in six other areas in Nevada and include: literature search and compilation of existing data, geologic… more
Date: January 1, 1982
Creator: Trexler, D. T.; Flynn, T.; Koenig, B. A.; Bell, E. J. & Ghusn, G., (Jr.)
Partner: UNT Libraries Government Documents Department
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Gamma densitometer for measuring Pu density in fuel tubes

Description: A fuel-gamma-densitometer (FGD) has been developed to examine nondestructively the uniformity of plutonium in aluminum-clad fuel tubes at the Savannah River Plant (SRP). The monitoring technique is ..gamma..-ray spectroscopy with a lead-collimated Ge(Li) detector. Plutonium density is correlated with the measured intensity of the 208 keV ..gamma..-ray from /sup 237/U (7d) of the /sup 241/Pu (15y) decay chain. The FGD measures the plutonium density within 0.125- or 0.25-inch-diameter areas of th… more
Date: January 1, 1982
Creator: Winn, Willard G.
Partner: UNT Libraries Government Documents Department
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Analysis of n+/sup 165/Ho and /sup 169/Tm reactions

Description: Experimental data for neutron-induced reactions on /sup 165/Ho and /sup 169/Tm have been theoretically analyzed in preparation for calculations on the unstable isotopes of Tm. A set of deformed optical model parameters was determined from measurements of s- and p-wave neutron strength functions, total cross sections, elastic angular distributions, and 16-MeV proton scattering to the /sup 165/Ho ground and first excited states. The parameters for the /sup 165/Ho and /sup 169/Tm nuclei were linke… more
Date: January 1, 1982
Creator: Young, P. G.; Arthur, E. D.; Philis, C.; Nagel, P. & Collin, M.
Partner: UNT Libraries Government Documents Department
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Some calculator programs for particle physics. [LEGENDRE, ASSOCIATED LEGENDRE, CONFIDENCE, TWO BODY, ELLIPSE, DALITZ RECTANGULAR, and DALITZ TRIANGULAR codes]

Description: Seven calculator programs that do simple chores that arise in elementary particle physics are given. LEGENDRE evaluates the Legendre polynomial series ..sigma..a/sub n/P/sub n/(x) at a series of values of x. ASSOCIATED LEGENDRE evaluates the first-associated Legendre polynomial series ..sigma..b/sub n/P/sub n//sup 1/(x) at a series of values of x. CONFIDENCE calculates confidence levels for chi/sup 2/, Gaussian, or Poisson probability distributions. TWO BODY calculates the c.m. energy, the init… more
Date: January 1, 1982
Creator: Wohl, C.G.
Partner: UNT Libraries Government Documents Department
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dc glow-discharge cleaning for accelerator

Description: Average pressure of 1 x 10/sup -11/ torr and vacuum stability are necessary for the successful operation of the proton storage rings such as ISABELLE. Vacuum degassing at high temperature and in situ bake-out will reduce the thermoout-gassing rate of the beam tubes to approx. 10/sup -13/ Tl/cm/sup 2/ sec, therefore achieving the required static pressure. The vacuum instability caused by beam-induced ion desorption can be solved by dc glow discharge cleaning. With evidence from this study, the p… more
Date: January 1, 1982
Creator: Chou, T. S. & Hseuh, H. C.
Partner: UNT Libraries Government Documents Department
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Production of. gamma. ,. pi. /sup 0/ and eta at large transverse momenta

Description: A measurement of direct photon production, as well as of ..pi../sup 0/ and eta meson production, has been performed at Fermilab. Data were taken for 200 GeV/c p and ..pi../sup +/ incident on Be, C and Al targets. The ratio of ..gamma../..pi../sup 0/ inclusive cross sections is presented for transverse momenta between 2 and 5 GeV/c.
Date: January 1, 1982
Creator: Biel, J.; Bromberg, C. & Brown, B.
Partner: UNT Libraries Government Documents Department
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Tested method to minimize plutonium assay discrepancies between laboratories

Description: Plutonium assay differences are frequently observed between laboratories exchanging plutonium dioxide powders. These differences are commonly the result of chemical changes and/or nonhomogeneities in sampled materials. The irregularities are often caused by moisture absorption during sampling, packaging, shipment, and storage of the materials. A method is proposed which eliminates the effects of chemical change in samples, particularly moisture absorption, and minimizes sampling error. A nondes… more
Date: January 29, 1982
Creator: Seiler, R. J.; Goss, R. L.; Rodenburg, W. W. & Rogers, D. R.
Partner: UNT Libraries Government Documents Department
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MC3644 detonator development status report for the period ending October 30, 1981

Description: The MC3644 detonator is being developed as a replacement for the MC3132 flying plate detonator in the parachute deployment system of the B83 weapon. The MC3644 is a CP, deflagration-to-detonation transition device. Two models are being developed: an interim design using the MC3423 ignitor and a new production version with a one-piece ignitor/header assembly. Features of both designs are described. Results of development tests involving the interim design are presented. No-fire sensitivity test … more
Date: January 1, 1982
Creator: Jacobson, A. K.
Partner: UNT Libraries Government Documents Department
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Development of significantly improved catalysts for coal liquefaction and upgrading of coal extracts. Quarterly progress report No. 4, July 1-September 30, 1982

Description: Cold flow ebullation tests to determine the ranges of operability of bead catalysts continued. Data reported show the effects of higher catalyst density, wider particle size distributions, and higher fluid viscosity on ebullation of bead catalysts. A relation for determining limiting diameters in a liquid-solid fluidized bed was developed. Correlation of the three-phase data is being investigated. The CSTR Catalyst Aging Test Unit is described. The system operates under computer control. High p… more
Date: January 1, 1982
Creator: Sinha, V. T.; Kutzenco, P. D.; Preston, W. J.; Brinen, J. S.; Graham, S. W.; Butensky, M. et al.
Partner: UNT Libraries Government Documents Department
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Space nuclear safety and fuels program. Progress report

Description: This technical monthly report covers studies related to the use of /sup 238/PuO/sub 2/ in radioisotope power systems. These studies are conducted by Los Alamos National Laboratory for the Office of Coordination and Special Projects of the US Department of Energy. Because most of the studies discussed here are ongoing, results and conclusions may change as the work continues. Published reference of the results cited in this report should not be made without explicit permission from the person in… more
Date: January 1, 1982
Creator: Bronisz, S. E.
Partner: UNT Libraries Government Documents Department
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Releases of radioactivity at the Savannah River Plant, 1954-1980

Description: This report contains summaries of releases of radioactivity to onsite seepage basins and to plant effluents for each year since plant startup (1954 through 1980). Releases for the years 1954 through 1959 were reassessed in 1974 and assigned release values for specific long-lived radionuclides. These long-lived radionuclides (half-lives greater than 1 year) are the only radionuclides included for the years 1954 through 1970. Since 1970 all detectable radionuclides have been included. Measured mi… more
Date: January 1, 1982
Creator: Ashley, C.; Zeigler, C. C. & Culp, P. A.
Partner: UNT Libraries Government Documents Department
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Testing geopressured geothermal reservoirs in existing wells. Wells of Opportunity Program final contract report, 1980-1981

Description: The geopressured-geothermal candidates for the Wells of Opportunity program were located by the screening of published information on oil industry activity and through direct contact with the oil and gas operators. This process resulted in the recommendation to the DOE of 33 candidate wells for the program. Seven of the 33 recommended wells were accepted for testing. Of these seven wells, six were actually tested. The first well, the No. 1 Kennedy, was acquired but not tested. The seventh well,… more
Date: January 1, 1982
Partner: UNT Libraries Government Documents Department
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