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Transfer operations with tritium: a review (open access)

Transfer operations with tritium: a review

None
Date: June 16, 1975
Creator: Folkers, C. L. & Gede, V. P.
System: The UNT Digital Library
Analysis of a reported magnetic monopole (open access)

Analysis of a reported magnetic monopole

It is shown that there are several substantive errors in a previous work on a cosmic ray event which is consistent with the hypothesis that it was caused by a magnetic monopole. It is shown that the data points fit to the hypothesis that the responsible particle is a platinum nucleus fragmenting to osmium and then to tantalum. (JFP)
Date: September 16, 1975
Creator: Alvarez, L.W.
System: The UNT Digital Library
CRBR reactor structures design. BRC meeting presentation (open access)

CRBR reactor structures design. BRC meeting presentation

None
Date: April 16, 1975
Creator: Pennell, W.E.
System: The UNT Digital Library
Radionuclide computerized tomography for brain study (open access)

Radionuclide computerized tomography for brain study

None
Date: April 16, 1975
Creator: Kuhl, D.E.; Edwards, R.Q.; Alavi, A.; Reivich, M. & Rothenberg, H.
System: The UNT Digital Library
Reactor enclosure. BRC meeting presentation (open access)

Reactor enclosure. BRC meeting presentation

None
Date: April 16, 1975
Creator: Fisch, J.W.
System: The UNT Digital Library
LOWER BOUNDS ON SELF-FOCUSING SO AS TO MAINTAIN RING INTEGRITY NEAR THE INITIATION OF ACCELERATION IN AN ELECTRON RING ACCELERATOR (open access)

LOWER BOUNDS ON SELF-FOCUSING SO AS TO MAINTAIN RING INTEGRITY NEAR THE INITIATION OF ACCELERATION IN AN ELECTRON RING ACCELERATOR

Relationships necessary for ring stability are derived between the self-focusing forces of an electron ring and the magnetic field gradient defocusing forces present near and just subsequent to the start of ring acceleration.
Date: April 16, 1970
Creator: Pellegrini, Claudio & Sessler, Andrew.
System: The UNT Digital Library
Optical pulse compression (open access)

Optical pulse compression

None
Date: April 16, 1975
Creator: Glass, A.J.
System: The UNT Digital Library
Ingredients of protection engineering (open access)

Ingredients of protection engineering

None
Date: December 16, 1974
Creator: Latorre, V. R. & Spogen Jr., L. R.
System: The UNT Digital Library
Wave conversion and resonances in laser light scattering (open access)

Wave conversion and resonances in laser light scattering

None
Date: August 16, 1973
Creator: Peratt, A.L.
System: The UNT Digital Library
Production of berkelium and californium (open access)

Production of berkelium and californium

None
Date: January 16, 1975
Creator: Crandall, J. L.
System: The UNT Digital Library
Introduction to albedo neutron dosimeters (open access)

Introduction to albedo neutron dosimeters

The design, operation, calibration, and performance of albedo neutron dosimeters are discussed. An albedo neutron dosimeter is designed to measure the flux of thermal neutrons which leave the body when a person is exposed to fast energy neutrons. The fast neutrons are scattered and moderated in the body, and many have lost most of their initial energy and emerge as thermal neutrons. The albedo neutron dosimeter is designed to detect this flux of thermal neutrons by using a thermal neutron detector. This could be any type of thermal neutron detector but in practical applications lithium fluoride (LiF) thermoluminescence dosimeters (TLDs) are most frequently used. Various types of albedo neutron dosimeters are described. (WHK)
Date: January 16, 1978
Creator: Hankins, D.E.
System: The UNT Digital Library
Universal formula for the quasistatic second-order density perturbation by a cold magnetoplasma wave (open access)

Universal formula for the quasistatic second-order density perturbation by a cold magnetoplasma wave

Using the general expression for the ponderomotive Hamiltonian, the quasi-static quasi-neutral density change caused by the ponderomotive force of a cold magnetoplasma wave of arbitrary frequency and polarization is obtained. This formula agrees with and extends previous results for unmagnetized and magnetized plasma.
Date: December 16, 1977
Creator: Kaufman, A. N.; Cary, J. R. & Pereira, N. R.
System: The UNT Digital Library
Hydrogenation of CO and CO/sub 2/ on clean rhodium and iron foils. Correlations of reactivities and surface compositions (open access)

Hydrogenation of CO and CO/sub 2/ on clean rhodium and iron foils. Correlations of reactivities and surface compositions

An experimental arrangement consisting of an ultrahigh vacuum bell jar equipped with an internal sample isolation cell was used to investigate the hydrogenation of CO over Fe and Rh surfaces. This apparatus permitted both UHV surface characterization (Auger electron spectroscopy, low-energy electron diffraction) and high pressure (1-20 atm) catalytic reactions to be carried out. Small surface area (approximately 1 cm/sup 2/) metal samples, both single crystals and polycrystalline foils, were used to catalyze the H/sub 2//CO reaction at high pressures (1-6 atm). Reaction products were monitored with a gas chromatograph equipped with a flame ionization detector. The surface compositions of the metal samples were determined before and after the reaction and the results correlated with the observed product distributions and reaction rates. In addition, the influence of various surface additives (carbon, oxygen, potassium) was also investigated. Iron was the more reactive of the two metals studied and was found to produce C/sub 1/-C/sub 5/ straight chain hydrocarbons but it poisoned rapidly. The catalytically active surface of both metals was covered with a carbonaceous monolayer. The carbonaceous monolayer was stable on the rhodium surface and produced C/sub 1/-C/sub 4/ hydrocarbons at a steady rate even after several hours of reaction. The …
Date: December 16, 1977
Creator: Dwyer, D.; Yoshida, K. & Somorjai, G.A.
System: The UNT Digital Library
Secondary recovery of plutonium and americium from process waste streams by solvent extraction (open access)

Secondary recovery of plutonium and americium from process waste streams by solvent extraction

A solvent extraction process is being evaluated for the secondary recovery of plutonium and americium from Rocky Flats waste streams. The bidentate organophosphorus compounds dihexyl-N,N-diethylcarbamylmethylene phosphonate and its dibutyl analogue have been shown to be selective extractants for the actinides from solutions of nitric acid. The results from laboratory test runs in which the organophosphorus extractants were used for processing secondary waste solutions will be presented. Solvent extractant properties and purification procedures are discussed.
Date: January 16, 1978
Creator: Hagan, P. G. & Navratil, J. D.
System: The UNT Digital Library
Risk assessment and radioactive waste management (open access)

Risk assessment and radioactive waste management

Problems associated with radioactive waste management, both technological and administrative, have become a serious constraint in the development of nuclear power. An approach toward understanding these problems consists of placing them in a perspective where the risks of radioactive waste management might be evaluated in relation to similar problems facing society so that consistent judgments can be made.
Date: August 16, 1977
Creator: Cohen, J.J.
System: The UNT Digital Library
Pictorial characterization of worldwide electric and hybrid vehicles (open access)

Pictorial characterization of worldwide electric and hybrid vehicles

The presentation given is intended to fulfill the several objectives of (1) documenting the pictorial review presented during ERDA's March 1, 1977, Conference on the Electric and Hybrid Vehicle Demonstration Project; (2) pictorially characterizing the present state of the electric and hybrid vehicle (EHV) art on an international scale; and (3) providing examples of the class of products expected to be available for the implementation of the early phases of Public Law 94-413. It is organized along national lines, with separate chapters for electric and hybrid vehicle programs in each of nine countries: Federal Republic of Germany, Israel, Netherlands, Sweden, the United Kingdom, France, Italy, Japan and the United States. Each chapter (except for Chapter 3) is preceded by descriptive material on the program objectives, participants and/or milestones.
Date: August 16, 1977
Creator: Kirk, R S & Barber, K F
System: The UNT Digital Library
Multiphoton resonances (open access)

Multiphoton resonances

The long-time average of level populations in a coherently-excited anharmonic sequence of energy levels (e.g., an anharmonic oscillator) exhibits sharp resonances as a function of laser frequency. For simple linearly-increasing anharmonicity, each resonance is a superposition of various multiphoton resonances (e.g., a superposition of 3, 5, 7, . . . photon resonances), each having its own characteristic width predictable from perturbation theory.
Date: February 16, 1977
Creator: Shore, B. W.
System: The UNT Digital Library
Low pressure gas filling of laser fusion microspheres (open access)

Low pressure gas filling of laser fusion microspheres

In our laser fusion microsphere production, large, thin gel-microspheres are formed before the chemicals are fused into glass. In this transient stage,, the gel-microspheres are found to be highly permeable to argon and many other inert gases. When the gel transforms to glass, the argon gas, for example, is trapped within to form argon filled, fusion target quality, glass microspheres. On the average, the partial pressure of the argon fills attained in this process is around 2 x 10/sup 4/ Pa at room temperature.
Date: April 16, 1979
Creator: Koo, J.C.; Dressler, J.L. & Hendricks, C.D.
System: The UNT Digital Library
Equilibrium oxygen potential-composition relations in hypostoichiometric plutonia (open access)

Equilibrium oxygen potential-composition relations in hypostoichiometric plutonia

The oxygen potential of hypostoichiometric plutonia at temperatures from 1000 to 1200/sup 0/C has been measured as a function of the oxygen-to-plutonium ratio by a thermogravimetric procedure. These data have been used to calculate activity coefficients for plutonia dissolved in urania and in thoria.
Date: July 16, 1979
Creator: Woodley, R. E.
System: The UNT Digital Library
Some programming aids for the DEC PDP-10 (open access)

Some programming aids for the DEC PDP-10

A simplified system has been written to help in FORTRAN programming of physics and mathematical problems. The system is described in Appendix A. A magnetic tape has been made of the complete system as used on the DEC-10 by M-Division for Magnetic Fusion related calculations. The system turns out to use many of the locally developed goodies, such as the TEDI text editor, the TV80 graphics system, and Tektronix 4012 videos. The facilities are briefly described in the HLP files on the tape.
Date: August 16, 1979
Creator: McNamara, B.
System: The UNT Digital Library
Mass spectrometer determination of argon contents in laser fusion target pellets (open access)

Mass spectrometer determination of argon contents in laser fusion target pellets

A system for measuring argon contents in individual laser fusion targets using a getter pumped closed volume quadrupole mass spectrometer has been developed. Accuracy of 10% can be obtained, limited by the calibration standard and electron multiplier drift. Measurements are simple, unambiguous and can be performed at up to one per hour with a sensitivity equivalent to 1 x 10/sup 3/ Pa (.01 atm) argon in a 140 ..mu..m internal diameter sphere.
Date: April 16, 1979
Creator: Ward, C. M. & Bergquist, L. E.
System: The UNT Digital Library
Digital, realizable Wiener filtering in two-dimensions (open access)

Digital, realizable Wiener filtering in two-dimensions

The extension of Wiener's classical mean-square filtering theory to the estimation of two-dimensional (2-D), discrete random fields is discussed. In analogy with the 1-D case, the optimal realizable filter is derived by solution of a 2-D discrete Wiener--Hopf equation using a spectral factorization procedure. Computational algorithms for performing the required calculations are discussed. 3 figures.
Date: March 16, 1979
Creator: Ekstrom, M.P.
System: The UNT Digital Library
Review of the microscopic cross sections for the americium isotopes in the resolved resonance region. [0. 5 eV to 10 keV] (open access)

Review of the microscopic cross sections for the americium isotopes in the resolved resonance region. [0. 5 eV to 10 keV]

The differential cross section measurements for /sup 241/Am, /sup 242m/Am and /sup 243/Am are reviewed in the energy range from 0.5 eV to 10 keV. Parameters extracted from resonance analysis, such as the neutron strength function, the average level spacing, the average capture and fission widths, are compared for the various measurements. The average capture and fission cross sections from 100 eV to 10 keV are directly compared. The status of the data set is discussed with suggestions for further measurements. 24 references.
Date: November 16, 1978
Creator: Browne, J. C.
System: The UNT Digital Library