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A R.F. Vernier Time to Pulse Height Converter (open access)

A R.F. Vernier Time to Pulse Height Converter

This technical report describes a pulse height converter that employs the R.F. vernier method. This particular converter has been developed for use with the pulsed beam facility of the BNL Van de Graaff. This report then details a number of tests of the converter made using a RIDL model 34-12, 400-channel analyzer. The report includes 6 figures and 4 circuit diagrams to accompany the findings.
Date: April 18, 1962
Creator: Lowe, J.
System: The UNT Digital Library
Facility Availability Brookhaven Graphite Research Reactor: January 1951 - March 1962 (open access)

Facility Availability Brookhaven Graphite Research Reactor: January 1951 - March 1962

This technical report details and outlines the BGRR facility's operations and performance record over a period of twelve years. The author of this report finds that the reactor is "one of the most stable and dependable in the business." The report includes two figures.
Date: May 18, 1962
Creator: Thompson, Dudley
System: The UNT Digital Library
Proembryo Irradiation to Produce Blue-Fluorescent and Albino Seedlings (open access)

Proembryo Irradiation to Produce Blue-Fluorescent and Albino Seedlings

Technical report outlining an experiment to introduce radiation to maize plants after pollination to produce blue-florescent and albino seedlings.
Date: June 18, 1962
Creator: Steffensen, Dale M.
System: The UNT Digital Library
Procedures for the Study of Bile Physiology in the Rat (open access)

Procedures for the Study of Bile Physiology in the Rat

This report describes procedures to "secure acceptable samples of bile from unanesthetized, nondepleted rats and sequential quantitative analysis with negligible experimental failure"--from abstract.
Date: June 18, 1962
Creator: Papavasiliou, P. S.; Bertinchamps, A. J.; Miller, S. T.; Gulibon, J. & Cotzias, G. C.
System: The UNT Digital Library
The Thermal Decomposition of Irradiated [alpha] Lead Aside (open access)

The Thermal Decomposition of Irradiated [alpha] Lead Aside

This report studies the thermal decomposition of unirradiated and heavily reactor irradiated colloidal [alpha] - PbH6.
Date: June 18, 1962
Creator: Jach, Joseph
System: The UNT Digital Library
Thermodynamics of Solutions of Actinides and Fission Products in Bismuth (open access)

Thermodynamics of Solutions of Actinides and Fission Products in Bismuth

This report reviews the published work on the thermochemistry of the liquid alloys of bismuth with Th, Pa, U, and Pu and the high-yield fission products, and presents in a unified form the authors' own results in this field.
Date: June 18, 1962
Creator: Wiswall, Richard H., Jr. & Egan, James J.
System: The UNT Digital Library
Positron Scanner for Locating Brain Tumors (open access)

Positron Scanner for Locating Brain Tumors

This report describes a system that uses positron emitting isotopes for locating brain tumors.
Date: June 18, 1962
Creator: Rankowitz, S.; Robertson, J. S.; Higinbotham, William A. & Rosenblum, R. J.
System: The UNT Digital Library
Cross Sections of 14.5 Mev Neutron Reactions With Special Interest in Ca47 Formation (open access)

Cross Sections of 14.5 Mev Neutron Reactions With Special Interest in Ca47 Formation

This report measures the cross sections of isotopes for 14.5 MeV neutrons and compares the author's results with calculated and existing literature values.
Date: June 18, 1962
Creator: Hillman, Manny
System: The UNT Digital Library
Eddy Transport in Liquid-Metal Heat Transfer (open access)

Eddy Transport in Liquid-Metal Heat Transfer

This report seeks to "develop a practical method of evaluating the eddy diffusivity of heat transfer for liquid metals, so that it can be incorporated into the more or less standard theoretical methods to give heat transfer coefficients which are in reasonable agreement with experimental facts"--from introduction.
Date: February 18, 1962
Creator: Dwyer, Orrington Embry, 1912-
System: The UNT Digital Library
Molecular Geometry and the Vapor Pressure of the Isotopic Ethylenes; Chemical and Structural Isomers (open access)

Molecular Geometry and the Vapor Pressure of the Isotopic Ethylenes; Chemical and Structural Isomers

This report details a study of the vapor pressures of deuteroethylenes and C13 ethylene.
Date: June 18, 1962
Creator: Bigeleisen, J., (Jacob), 1919-2010; Ribnikar, Slobodan V.; Stern, Marvin J. & VanHook, W. A., (William Alexander), 1936-
System: The UNT Digital Library
Isotope Effects on Intermolecular Interactions and Isotopic Vapor Pressure Differences (open access)

Isotope Effects on Intermolecular Interactions and Isotopic Vapor Pressure Differences

This report discusses some of the problems in the calculation of isotope effects on the vibrational frequencies of the condensed phase.
Date: June 18, 1962
Creator: Wolfsberg, Max
System: The UNT Digital Library
Initial Experiments on the Brookhaven Reactor. VI. Fast Source Correction for Diffusion Length Measurements on BNL Reactor (open access)

Initial Experiments on the Brookhaven Reactor. VI. Fast Source Correction for Diffusion Length Measurements on BNL Reactor

In a manner somewhat analogue to that employed by R. Margulies in his memo (BNL Log No. C-2985) on fast source corrections in sigma piles, corrections to be applied to the data obtained on the laid-up graphite in the BNL reactor have been calculated. The correction was computed for a Ra-Be source using the data of Seren and using a standard graphite density for the BNL pile of 1.69. Values of the correction for different experimental sets of data were computed for each of three different diffusion lengths measured parallel to the channels. A correction for diffusion lengths perpendicular to the channels was also determined.
Date: August 18, 1949
Creator: Weil, J. W.
System: The UNT Digital Library
Pipet Filler (open access)

Pipet Filler

A number of pipetting aids are commercially available which obviate the necessity of filling pipets by oral suction. Most of the commercially available devices involve fitting the pipet into a soft tight fitting bushing and filling by means of either a piston or a rubber bulb. The pipet is then emptied by means of a valve control which permits, it is claimed, a dispensing accuracy of 0.1mL. It is at once apparent that the probable error (10% for a 1 mL. pipet) is considerably greater than is permissible for great precision. In practice these devices are found to be awkward and after a period of use tend to become even more so due to corrosion of the valve and aging of the rubber bushing and rubber bulbs.
Date: November 18, 1952
Creator: Finston, H. L. & Strickland, Gerald
System: The UNT Digital Library
Mode Identification in the Iris-Loaded Waveguide of a RF Particle Separator (open access)

Mode Identification in the Iris-Loaded Waveguide of a RF Particle Separator

The theoretical and practical aspects of the accelerating mode (TM01) in iris-loaded waveguides have been covered extensively in many reports and publications. The pulse shortening observed in linacs and the possible application of an iris-loaded waveguides as the deflecting structure for rf particle separators stimulated the interest in the nature of higher order modes. Some experimental results on higher order modes in iris-loaded waveguides are available in references. Results of studies done at CERN are not yet published; they were however communicated to the authors and represented the basis of work done at Brookhaven. A preliminary account of BNL results was given in reference. The purpose of this report is to describe the model measurements which were necessary to determine the geometry of a brazed or electroformed prototype for a deflecting waveguide. At the same time, a systematic investigation of other than the deflecting mode was done to ensure a nondegenerate field solution at the operating frequency. The measurements are compared with computational results obtained on the IBM 7090 at BNL.
Date: February 18, 1963
Creator: Hahn, H. & Halama, H. J.
System: The UNT Digital Library
The "N" on "P" Silicon Solar Cell Gamma Ray Dose Rate Meter (open access)

The "N" on "P" Silicon Solar Cell Gamma Ray Dose Rate Meter

The recently developed "n" on "p" type silicon solar cell has been evaluated for application as a high-level gamma radiation dose rate meter. The solar cell ionization current was found to be a linear function of dose rate in a range 10 2 to 10 7 rads per hour. A degradation rate of approximately one per cent per megarad was measured after stabilization with twenty megarads of cobalt-60 gamma radiation. The system has proven to be stable over long periods of time. Temperature dependence corrections have been found to be .0 per cent per degree centigrade between 0 and 60 degree centigrade.
Date: November 18, 1963
Creator: Mueller, A. C.; Rizzo, P. X. & Galanter, L.
System: The UNT Digital Library
Possible Use of a Betatron Core on the Cosmotron (open access)

Possible Use of a Betatron Core on the Cosmotron

Most existing electron synchrotrons use betatron start for initial acceleration of the particles. The subsequent synchrotron acceleration is then performed with a nearly constant radio-frequency. Investigation of the effect of turn-on rate and initial energy spread is made mathematically. Several advantages are seen for such a technique. (D.C.W.)
Date: January 18, 1962
Creator: Smith, L. W.
System: The UNT Digital Library
Perturbation Techniques for the Deflecting Mode (open access)

Perturbation Techniques for the Deflecting Mode

The descriptive parameters of a waveguide with smooth or periodic structure are most easily measured in a waveguide section of suitable length which is transformed into a resonant cavity by placing short circuits at both ends. Measurements of dispersion diagram, phase velocity, group velocity, voltage attenuation coefficient, shunt impedance, field configuration, etc. all involve some form of perturbation technique. The introduction of a perturbing object in a resonant cavity changes the stored electric energy We and magnetic energy Wm by Δwe and ΔWm' resulting in a frequency shift Δf of the resonant frequency f, which is given by the perturbation formula of J. Muller.
Date: November 18, 1963
Creator: Hahn, H. & Halama, H. J.
System: The UNT Digital Library
Automatic Bubble Density Measurement with the Hough-Powell System (open access)

Automatic Bubble Density Measurement with the Hough-Powell System

The Brookhaven Bubble Chamber Group is developing a Hough-Powell fast analysis system (HPD)1 for bubble chamber photographs. High precision measurements are made with a computer controlled flying spot digitizer. We are currently testing the track selection programs for the system. We have just completed a study of a method for automatic bubble density measurements.
Date: November 18, 1963
Creator: Strand, R. C. & Webre, N.W.
System: The UNT Digital Library
The Radiolysis and Pyrolysis of Several Polyaromatic Compounds (open access)

The Radiolysis and Pyrolysis of Several Polyaromatic Compounds

The radiolysis of several polyaromatic compounds which might be used as coolant material in a reactor was investigated using both gamma and reactor radiation. The compounds selected were naphthalene, anthracene, naphthacene, pyrene, phenanthrene, 1, 2 benzanthracene, chrysene, triphenylene, 9, 10 dihydrophenanthrene, phenazine, 7, 8, benzoquinoline and m-phenanthroline, in addition to the uncondensed ring compounds, biphenyl, ortho, meta and para terphenyl and bibenzyl. Gas yields, percentage decomposition, percentage "high boiler" and number average molecular weights were determined. A correlation was found between radiation stability and electron affinity and singlet triplet excitation energies. The most stable compounds were the condensed ring compounds, naphthalene, pyrene, chrysene, phenanthrene and triphenylene.
Date: November 18, 1963
Creator: Weiss, J.; Collins, C. H. & Sucher, J.
System: The UNT Digital Library