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Derivation of the point spread function for zero-crossing-demodulated position-sensitive detectors
This work is a mathematical derivation of a high-quality approximation to the point spread function for position-sensitive detectors (PSDs) that use pulse-shape modulation and crossover-time demodulation. The approximation is determined as a general function of the input signals to the crossover detectors so as to enable later determination of optimum position-decoding filters for PSDs. This work is precisely applicable to PSDs that use either RC or LC transmission line encoders. The effects of random variables, such as charge collection time, in the encoding process are included. In addition, this work presents a new, rigorous method for the determination of upper and lower bounds for conditional crossover-time distribution functions (closely related to first-passage-time distribution functions) for arbitrary signals and arbitrary noise covariance functions.
Date:
July 1, 1976
Creator:
Nowlin, C. H.
Object Type:
Report
System:
The UNT Digital Library
Susanville Geothermal Investigations, California, Special Report
This report documents the investigations by the Bureau of Reclamation and others of the geothermal resource potential of the Susanville-Honey Lake Valley area, California, made during 1975 and the early part of 1976. Included are discussions on the nature of the resource and the analyses of the data gathered. Susanville is located in northeastern California about 210 miles (330 kilometers) northeast of San Francisco. The purpose of the study was to appraise the geothermal resources in the Susanville-Honey Lake area within the constraints of limited funds and available personnel. The main thrust of the studies consisted of: gathering and analyzing existing data; conducting and evaluating an electrical resistivity survey and an aerial thermal infrared survey; and drilling and logging of temperature gradient holes. The heat flow or energy potential of the resource was not determined.
Date:
June 1, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Public opinion concerning geothermal development in Lake County, California
A random sample of 2500 of the registered voters of Lake County, California, were polled about their opinions regarding the prospect of the development of geothermal energy in Lake County. The results of a secondary analysis of their responses are presented. The main conclusions are: (1) A large majority of the respondents are in favor of geothermal development provided that it is suitably regulated to minimize negative environmental impacts. (2) The main determinants of the respondents' approval or disapproval of geothermal development are their expectations concerning the environmental impacts of geothermal development and the economic benefits of development for the county. Essentially all respondents who do not perceive negative environmental impacts support development, and the expectation of increased job opportunities and/or tax revenues is a nearly absolute prerequisite for support of development. (auth) (3) Pro- and anti-geothermal bias have strong effects upon the formation of opinions about leasing and the perception of environmental impacts. (4) Purely demographic characteristics of the respondents, such as employment status and years of residence in the county, have only limited effects upon their attitudes toward geothermal development except in the southern portion of the county, where longer term residents and those who live in the …
Date:
March 1, 1976
Creator:
Vollintine, L. & Weres, O.
Object Type:
Report
System:
The UNT Digital Library
Internal operating procedures for public agency involvement in geothermal development in Lake County, California
The internal operating procedures are discussed for those agencies (local and state) having permitting responsibility over private lands. A flow diagram is presented which illustrates minimum permitting time requirements as well as agency operating processes and interdependence. (MHR)
Date:
January 1, 1976
Creator:
Hussey, E. T.
Object Type:
Book
System:
The UNT Digital Library
Distribution and Movement of Zinc and Other Heavy Metals in South San Francisco Bay, California
From introduction: The primary objective of this study was to determine the net transport of zinc into the study area from urbanized perimeter, out of the study area across the northern boundary of the study area, and across the sediment-water interface within the study area, all within a limited time period. A secondary objective was to assemble as much data on other trace metals--their concentrations and chemical states in water, suspended solids, sediments and interstitial fluids--as possible within the time and funding constraints of the study in order to describe the existing trace metal conditions in the south bay. Thus the bulk of effort was directed toward evaluating the distribution and movements of zinc, but the data collected on the distribution and movements of zinc, but the data collected on the distribution of other metals is important and is reported here.
Date:
February 1976
Creator:
Bradford, Wesley L.
Object Type:
Report
System:
The UNT Digital Library
ERDA summer study of heavy ions for inertial fusion, Oakland/Berkeley, California, July 19--30, 1976. Final report
Technical summaries are given for the following areas: (1) target and reactor design, (2) ion sources, (3) low-velocity acceleration, (4) atomic and molecular physics, (5) accelerator parameters, (6) beam manipulations, (7) induction linac, (8) final focusing and transmission to the target, (9) systems and cost studies, and (10) alternatives. Several groups of appendices are given that relate to these technical summaries. (MOW)
Date:
December 1, 1976
Creator:
Bangerter, R. O.; Herrmannsfeldt, W. B.; Judd, D. L. & Smith, L.
Object Type:
Report
System:
The UNT Digital Library
Proceedings of the second United Nations symposium on the development and use of geothermal resources held at San Francisco, California, May 20--29, 1975. Volume 1
The 299 papers in the Proceedings are presented in three volumes and are divided into twelve sections, each section dealing with a different aspect of geothermal energy. Rapporturs' summaries of the contents of each section are grouped together in Vol. 1 of the Proceedings; a separate abstract was prepared for each summary. Volume 1 also contains ninety-eight papers under the following section headings: present status of resources development; geology, hydrology, and geothermal systems; and geochemical techniques in exploration. Separate abstracts were prepared for ninety-seven papers. One paper was previously abstracted for ERA and appeared as CONF-750525--17. (LBS)
Date:
1976
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Proceedings of the second United Nations symposium on the development and use of geothermal resources. Volume 2
Separate abstracts were prepared for 69 of the 77 papers presented. The remaining 7 papers were previously abstracted in ERA and can be found in the report number index under CONF-750525. The papers presented are under sections entitled geophysical techniques in exploration, environmental factors and waste disposal, and drilling technology. (WHK)
Date:
1976
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Susanville Geothermal Energy Project. Workshop proceedings final technical report
Separate abstracts were prepared for the 16 papers presented in ERA; 10 are included in EAPA. (WHK)
Date:
July 13, 1976
Creator:
Longyear, A. B.
Object Type:
Report
System:
The UNT Digital Library
Study of geothermal prospects in the western United States
The commercial development potential of 13 underdeveloped geothermal prospects in the Western United States has been examined and the prospects have been ranked in order of relative potential for development on the basis of investment considerations. The following were considered in the ranking: geotechnical and engineering data, energy market accessibility, administrative constraints, and environmental and socio-economic factors. The primary ranking criterion is the unit cost of energy production expected from each prospect. This criterion is obtained principally from expected reservoir temperatures and depths. Secondary criteria are administrative constraints, environmental factors and the quality of the geotechnical data. The Roosevelt, Utah, prospect ranks first in development potential followed in order by Beowawe, Nevada; Coso Hot Springs, California; Long Valley, California; and Brady's Hot Springs, Nevada.
Date:
August 20, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Some aspects of energy transfer in molecular and atomic collisions. [Cross sections, statistical model, quenching; S matrix]
It is maintained that quenching of 0(/sup 1/D) by collision with N/sub 2/ and the ionization of Na by collision with vibrationally excited N/sub 2/ proceed via the formation of a collision complex. Once the complex is formed, even a weak coupling between the two states involved, can induce a large transition probability because the crossing seam of the two potential energy surfaces is passed many times during the life of the complex. Qualitatively reasonable potential energy surfaces for 0(/sup 1/D) + N/sub 2/ are constructed and classical trajectory calculations carried out to show that the cross section for complex formation is indeed appreciable; a statistical model is used to determine the quenching probability of the complex; results are in good agreement with experiment. Ab initio (SCF) potential energy surface calculations are carried out for N/sub 2/-Na, N/sub 2/-Na/sup +/, and N/sup -//sub 2/-Na/sup +/ systems; the points are fit to simple standard functions; a statistical model is developed for the ionization of Na by vibrationally excited N/sub 2/. The classical S-Matrix theory is applied to rotational excitation of CO by collision with He; the results are in qualitative agreement with quantum mechanical calculation.
Date:
November 1, 1976
Creator:
Zahr, G. E.
Object Type:
Report
System:
The UNT Digital Library
Studies in chemical dynamics and radiation chemistry. Technical progress report, 1 July 1975--30 June 1976
None
Date:
July 1, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Discontinuity formulas for multiparticle amplitudes
It is shown how discontinuity formulas for multiparticle scattering amplitudes are derived from unitarity and analyticity. The assumed analyticity property is the normal analytic structure, which was shown to be equivalent to the space-time macrocausality condition. The discontinuity formulas to be derived are the basis of multi-particle fixed-t dispersion relations.
Date:
March 1, 1976
Creator:
Stapp, H. P.
Object Type:
Report
System:
The UNT Digital Library
Lectures on the new particles
An attempt is made to discuss systematics of new particles and their spectroscopy in a simple manner. The main emphasis is on charm and SU(4), weak decays of charmed mesons, hadronic masses, and charmonium. (SDF)
Date:
August 18, 1976
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Bauschinger effect in uranium. [Rarefaction waves]
The Bauschinger effect (different elastic-plastic behavior upon unloading) was measured in uranium and a model of the effect developed for use in one-dimensional hydrodynamic codes. Results from plate-impact tests show that rarefaction waves in uranium can be calculated more accurately with this model. We conclude that the Bauschinger effect can be an important aspect of rarefaction waves in uranium and other materials. 8 figures. (auth)
Date:
March 17, 1976
Creator:
Cochran, S. G. & Guinan, M. W.
Object Type:
Report
System:
The UNT Digital Library
Materials and Molecular Research Division annual report, 1976
Separate abstracts were prepared for the individual sections of this report.
Date:
January 1, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Calculation of the small scale self-focusing ripple gain spectrum for the CYCLOPS laser system: a status report
The FLAC code (Fourier Laser Amplifier Code) was used to simulate the CYCLOPS laser system up to the third B-module and to calculate the maximum ripple gain spectrum. The model of this portion of CYCLOPS consists of 33 segments that correspond to 20 optical elements (simulation of the cell requires 2 segments and 12 external air spaces). (MHR)
Date:
October 1, 1976
Creator:
Fleck, J. A., Jr.; Morris, J. R. & Thompson, P. F.
Object Type:
Report
System:
The UNT Digital Library
Interaction cross section of C/sub s//sup +/ ions
Some estimates of the shape of C/sub s/ ion and C/sub s/ atom interaction potentials suggest that the C/sup +//sub s/ + C/sup +//sub s/ charge transfer cross section may be less than 10/sup -15/ cm/sup 2/.
Date:
August 11, 1976
Creator:
Hiskes, J. R.
Object Type:
Report
System:
The UNT Digital Library
Particle acceleration by collective effects
Successful acceleration of protons and other ions has been achieved experimentally in this decade by a number of different collective methods. The attainment of very high accelerating fields has been established although so far the acceleration distance has been confined to only a few centimeters. Efforts are in progress to understand the accelerating mechanisms in detail and, as a result, to devise ways of extending considerably the acceleration distance. A review is given of the current progress, expectations, and limitations of the different approaches.
Date:
September 1, 1976
Creator:
Keefe, D.
Object Type:
Report
System:
The UNT Digital Library
Laser program annual report, 1975
Separate abstracts were prepared for the nine included sections. (MOW)
Date:
March 1, 1976
Creator:
Glass, A. J. & Cummings, K. L. (eds.)
Object Type:
Report
System:
The UNT Digital Library
Genetic and developmental study of a complex locus in the house mouse. Progress report, August 1, 1974--July 31, 1976
We have maintained and studied seven dominant T-like mutations, eleven recessive lethal t-alleles in six different complementation groups, two semilethal t-mutations, and fifteen viable t-variants in the house mouse. Seven of the latter are newly arisen and have been characterized during this year. Six other, non T/t locus, markers are also maintained. Interest has centered on the following three points: further analysis of the four different types of dominant T-mutations that we have available shows that two of these, and possibly a third, seem to have chromosome abnormalities associated with them; the etiology of the maternal effect seen in T/sup Hp/ has also been studied, and no mechanism has yet been found, although trisomy 17 has been excluded; eleven new alleles derived by recombination in lethal t-mutations have been fully or substantially analyzed; and attempts at fine structure mapping of the T-tf region in the presence of two other mutations (t/sup 38/ and Low) have produced anomalous results that suggest that the presence of t/sup 38/ and Low in the trans position may interfere with crossing over in the t/sup 38/-Low interval.
Date:
April 1, 1976
Creator:
Bennett, D.
Object Type:
Report
System:
The UNT Digital Library
Discriminator/time interval meter system evaluation report
The purpose of this report is to discuss the evaluation of a modular prototype Discriminator/Time Interval Meter data acquisition unit as a useful tool in a digital diagnostics system. The characteristics, operation and calibration of each of the hardware components are discussed in some detail. A discussion of the system calibration, operation, and data ingestion and reduction is also given. System test results to date are given and discussed. Finally, recommendations and conclusions concerning the capabilities of the Discriminator/T.I.M. system based on test and calibration results to date are given.
Date:
April 12, 1976
Creator:
Condreva, K. J.
Object Type:
Report
System:
The UNT Digital Library
Elementary introduction to finite difference equations
An elementary description is given of the basic vocabulary and concepts associated with finite difference modeling. The material discussed is biased toward the types of large computer programs used at the Lawrence Livermore Laboratory. Particular attention is focused on truncation error and how it can be affected by zoning patterns. The principle of convergence is discussed, and convergence as a tool for improving calculational accuracy and efficiency is emphasized.
Date:
May 3, 1976
Creator:
White, J. W.
Object Type:
Report
System:
The UNT Digital Library
Task 5c: measurement and instrumentation under subsystem design of the LLL safeguard material control program. [For fuel reprocessing plant]
A product survey was conducted of all security products currently available on the market. Documentation is presented of the survey and a printout of the data is included. A general description is given of new but recommended instrumentation and security devices for application to fuel reprocessing plants. Security systems and hardware recommended for development, assembly, and testing are discussed briefly. (DLC)
Date:
December 31, 1976
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library