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2,242 Matching Results
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Magnetic Measurement of AGS Experimental Magnets
This is a preliminary report on the magnetic measurements taken to date on the AGS experimental magnets. It mainly summarizes the results which were necessary for the setting up of the proton separated beam in August 1961. A few curves on information obtained since then are included. When the study is finished, a complete report on all phases of the work, including the methods used, will be forthcoming.
Date:
December 26, 1961
Creator:
Danby, Gordon T.
Object Type:
Report
System:
The UNT Digital Library
Internal Bunching in the Alternating Gradient Synchrotron (AGS)
Four methods of rebunching protons within Brookhaven's AGS are discussed. The first method involving switching off the old r-f and switching on the new r-f simultaneously with the new r-f increasing adiabatically seems impractical. Two other methods utilize gradual removal of the old r-f voltage and introduction of the new r-f voltage, or the reverse. Removal of the old r-f voltage followed by introduction of the new seems to give the best results. Several phase diagrams are included. (D.C.W.)
Date:
January 16, 1961
Creator:
Robertson, D. S.
Object Type:
Report
System:
The UNT Digital Library
Computations for AGS Experimental Beams: Description of Computer Program
Description of a computer program which optimizes the locations and strengths of magnets for experimental beams at the Brookhaven AGS written for the IBM 7090 computer. Layout, method, and routines are given particular attention, and representative data cards are shown.
Date:
December 15, 1961
Creator:
Baker, Winslow F.
Object Type:
Report
System:
The UNT Digital Library
Non-Linear Bunch Motion at Transition
A summary of the dynamic behavior of the proton bunches in the Brookhaven Alternating Gradient Synchrotron (AGS) has been given previously. In these reports, the usual linearization of the differential equations involved has been made and the theory was restricted to well bunched beams. The linearized approach is no longer valid at transition where the actual phase angle of the bunch can differ appreciably for a short time from the stable phase angle Φ₀. In this report the non-linearity of the differential equations for phase oscillations will no longer be neglected. At transition the beam is slow enough so that the electronics of the bootstrap system can be considered as being ideal and the radius servo loop can be characterized by one time constant. Under these assumptions the analysis can be carried out in a two-dimensional phase plane. The essential new result will be the short existence of a stable equilibrium point for the bunch motion not coinciding with Φ₀. The results here derived have been tested experimentally and at least a qualitative agreement was found. However, the conclusions are no more valid if debunching takes place since we have still neglected the finite bunch width.
Date:
December 4, 1961
Creator:
Hahn, Harald
Object Type:
Report
System:
The UNT Digital Library
Servo System for Magnetic Controlled Constant Intensity Flat Top Beam Spill-Out
A uniform intensity flat top spill-out cannot be obtained by manual control for two reasons: 1. The horizontal density of the internal beam of the Cosmotron is far from uniform. As a result, a manually controlled linear motion of the internal beam into a target will result in a non-uniform spill-out intensity. 2. Stability requirements of the Cosmotron magnet voltage are not easily met without feedback because of inherent component stability. The proposed servo system will sense the external beam intensity, and correct the magnet voltage to keep this intensity constant. This servo must operate through the transfer function of the main ignitron system and the flat top filter. Both of those transfer functions impose special problems.
Date:
November 21, 1961
Creator:
Cottingham, J. G.
Object Type:
Report
System:
The UNT Digital Library
Dynamics of Radiation Damage: A Report on Recent Results at BNL
A brief review of work on radiation damage in metals at low and moderate energies is presented. Work on a model representing Cu is discussed along with damage in a model of ordered Cu/sub 3/Au. The work is being extended to a model of Fe. (J.R.D.)
Date:
1961
Creator:
Vineyard, George H.
Object Type:
Report
System:
The UNT Digital Library
Chemistry of Anhydrous Systems Containing Hydrogen Fluoride and Nitrogen Oxides
Nitrosyl and fluoride ions are formed in liquid anhydrous hydrogen fluoride when nitric oxide, nitrogen sesquioxide, nitrogen tetroxide, or nitrosyl fluoride, are dissolved. Vapor infrared analysis was used to study the solution composition and gaseous reaction products. These solutions react with metallic uranium, plutonium, zirconium, iron, and aluminum, as well as ceramic uranium oxide and uranium carbide, forming soluble nitrosyl metal fluoride complexes and liberating nitric oxide. The uranium compound identified as nitrosylium hexafluorouranate, NOUF₆, was made volatile by passing nitrosyl fluoride gas over the dry salt at 500 deg C.
Date:
1961
Creator:
Horn, Frederick, L.; Bartlett, Charles, B. & Tivers, Richard, J.
Object Type:
Report
System:
The UNT Digital Library
Effects of Insulin of Hepatic Glucose Metabolism and Glucose Utilization by Tissues
The mechanism whereby insulin lowers the blood glucose concentration is currently under extensive investigation. Despite the general agreement that the addition of insulin increases glucose uptake by various isolated tissues, the question has been raised whether administered insulin produces its blood sugar lowering effect in vivo primarily in increasing glucose uptake. Furthermore, it has been suggested that physiologically-released insulin may not exert the same effects as are produced by administered insulin. Attention has also been focused on whether insulin (exogenous or endogenous) exerts its action mainly or entirely on the liver and to what extent insulin influences glucose uptake and glucose production by the liver. The studies to be reported are a continuation of earlier work and are concerned with the effects of insulin, both exogenous and endogenous, on glucose utilization by the tissues and glucose production by the liver under various dietary condition in the unanethetized, intact dog, using C¹⁴ glucose.
Date:
[..1961]
Creator:
de Bodo, R. C.; Steele, R.; Altszuler, N.; Dunn, A. & Bishop, J. S.
Object Type:
Report
System:
The UNT Digital Library
The Application of Inert Fluidized Beds to the Volatility Reprocessing of Reactor Fuels
In the reprocessing of spent solid fuels from nuclear reactors by direct volatilization, one of the major problems is the removal of heat from the highly exothermic gas-solid reactions. The use of fluidized beds of inert granular material as heat transfer media to control these exothermic reactions forms the basis of one approach to volatile reprocessing which is under development at BNL The engineering scale work carried out under this development program is discussed.
Date:
1961
Creator:
Regan, W. H.; Reilly, J. J.; Wirsing, E. & Hatch, L. P.
Object Type:
Report
System:
The UNT Digital Library
"Crud" Scrubbing with a Purex-Type Zebra Cartridge
Entrained solids have in the past been one of the major factors limiting solvent extraction fission product decontamination. These solids are known to be surface active, to absorb fission products, and to form interfacial films or "cruds". A major step in eliminating these cruds was taken when the Purex columns were modified to operate with the interfaces at the waste ends of the columns rather than the product ends. This type of operation tended to flush the solids out with the waste rather than the product streams.
Date:
October 17, 1961
Creator:
Richardson, G. L
Object Type:
Report
System:
The UNT Digital Library
The Recovery of Fission Product Rare Earth Sulfates from Purex LWW
A research and development program aimed at devising processes for the economical recovery of the potentially valuable long-lived fission products from Purex waste has been under wat at Hanford for several years. When this work has begun, the concentrated waste was primarily a nitric acid solution (6 to 10 M HNO3) containing the fission products and relatively small concentrations of iron, sulfate, and other corrosion products. Flowsheets based on classical separation schemes and rather similar to processes used by the Isotopes Division at the AEC's Oak Ridge operation served to separate the desired fission products from one another and from the corrosion products (1,2,3).These separation schemes employed careful step-wise pH adjustment to precipitate first the iron and then to separate the desired fission products from one another. The flowsheets were demonstrated on a pilot-plant scale with full-level plant waste. However, since the earlier work was complete, plant operations have been modified....
Date:
May 10, 1961
Creator:
Wheelwright, E. J. & Swift, W. H.
Object Type:
Report
System:
The UNT Digital Library
Effect of Gamma Radiation on the Physical Properties of Elastics
This article presents data on the effects of gamma radiation on the physical properties of a number of different classes of plastics materials of construction which were screened to determine their capabilities and limitations for service in applications where ionizing radiation exists. The irradiations were carried out in air at ambient temperature at normal atmospheric pressure to various gamma radiation doses up to 1*10^9 r depending upon the stability of the materials to radiation exposure. The different classes of materials and materials within a class are compared.
Date:
January 20, 1961
Creator:
Harrington, Robert
Object Type:
Report
System:
The UNT Digital Library
Power Tests for PRT Reactor
Startup and testing of the PRTR has been divided into three parts, Design Tests, Critical Tests and Power Tests. This document is the third of the series and describes the performance tests which will be made under nuclear power and the general schedule of operation. Responsibility for the startup of the reactor has been assigned to the PRTR Startup Council. The Power Test Sub-Council, which has done the planning of the initial power operation, was established by the Startup Council. Operation of the reactor will be the responsibility of the PRTR Operation (PRTRO).
Date:
April 1, 1961
Creator:
Lewis, W. R.; Atwood, J. M.; Dunn, R. E.; Evans, E. A.; Fox, J. C.; Peterson, R. E. et al.
Object Type:
Report
System:
The UNT Digital Library
Elastic Scattering of 31-Mev He3 Ions From Several Elements
The absolute differential cross sections for elastic scattering of 31-Mev He3 ions on Be, Al, Cu, Sn(nat), Sn120, and Bi have been measured in the angular range of approximately 10 to 120 deg in the center-of-mass system. Thin self-supporting foil targets were chosen to span the parameter A 1/3, where A is the target mass number. The first excited states of the isotopes of the above elements had sufficient energy separation from the ground state to enable elastic scattering to be resolved from inelastic scattering. The detection system, consisting of Cal(Tl) scintillation crystals, was capable of 3%pulse-height resolution and 1 degree angular resolution. Characteristically, the light-element angular distributions show strong diffraction effects. The differential cross section divided by the Rutherford cross section decreases exponentially at large angles for the heavy elements, and the differential cross sections break away from Rutherford behavior at angles which increase almost linearly with increase of atomic number of the target nucleus. A comparison of the results for natural tin, and tin enriched to 85% in Sn120, indicated that within the experimental uncertainties over the measured angular interval, there were no pronounced isotopic effects. The data are presented both in tabular and graphical form to allow …
Date:
December 31, 1961
Creator:
Igo, George; Markowitz, Samuel S. & Vidal, Jose G.
Object Type:
Report
System:
The UNT Digital Library
The Neutron-Deficient Yttrium Isotopes Y82, Y83, And Y84
The neutron-deficient yttrium isotopes Y82, Y83, and Y84 have been produced by irradiations with the Berkeley heavy-ion linear accelerator. Where possible, identifications were made by establishing genetic relationships with known daughter or granddaughter activities. The half-life of Y84 determined by direct decay is 39+-1 min. By a series of timed chemical separations, the following half-lives have been established: Y82, 9+-3 min; Y83, 8+-2 min. No information pertaining to the radiations emitted in the decay of three yttrium isotopes, other than Y84, has been obtained. The gamma-ray spectra of Y84 and Sr83 are shown.
Date:
December 1961
Creator:
Maxia, V.; Kelly, W.H. & Horen, D.J.
Object Type:
Report
System:
The UNT Digital Library
A Solution of the Distributional Error Problem in Cytophotometry
Use of that portion of the characteristic curve of photographic film in which transmission is linear with log exposure eliminates the distributional error and thus makes possible the assessment of total mass of an inhomogeneously distributed cell consistent without scanning or measuring the cell's projected area. Measurement consists of obtaining the difference in output of a photocell receiving the total light transmitted by a photomicrograph of the cell, and a photomicrograph of the microscope field illumination against which the cell was photographed. A method of making such measurements is given, and its basis is described.
Date:
December 19, 1961
Creator:
Adams, Lawrence R. & Sondhaus, Charles A.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Temperature on the Yield Strength of the Polycrystalline Hexagonal Ag-Al Intermetallic Phase
The effect of temperature on the yield strength of the polycrystalline hexagonal Ag-Al intermetallic phase was investigated over the temperature range 77 to 775 K. It was found that the curve for yield stress vs temperature for both polycrystalline Ag-33 at .% Al specimens that were heavily cold worked prior to deformation and those that were recrystallized prior to deformation was parallel to that for prismatic slip in single crystals.
Date:
December 18, 1961
Creator:
Tanaka, Kichinosuko & Mote, Jim D.
Object Type:
Report
System:
The UNT Digital Library
Hydromagnetic Ionizing Fronts
One of the techniques by which highly ionized plasmas can be generated in the laboratory makes use of strong, electromagnetically driven shock waves propagating into a cold gas. In this paper the phenomenon is analyzed as a one-dimensional single-fluid hydromagnetic problem, neglecting dissipation behind the wave. We hypothesize that the rarefaction wave remains attached to the front. In the limit of essentially complete ionization behind the front the problem can be solved analytically as long as the transverse magnetic field there remains small compared with the longitudinal field.
Date:
December 14, 1961
Creator:
Kunkel, Wulf B. & Gross, Robert A.
Object Type:
Report
System:
The UNT Digital Library
Neutron Dosimetry in and Around Human Phantoms By Use of Nuclear Track Emulsion
The power of nuclear track research emulsion as a fast neutron dosimeter is examined in the exposure of a human phantom to PuBe neutrons. Semiautomatic track scanning and high-speed data analysis obviate the major disadvantages of this dosimeter, and allow the following basic information to be obtained without a serious cost in time: the rulative proton recoil energy spectrum, the absolute differential proton track den sity spectrum, and the average proton recoil energy at various locations in the phantom. From this are calculated the total absorbed local tissue doze due is proton recoils, the local thermal neutron intensity, and that portion of the tissue doze due to thermal [formula] tracks.
Date:
November 30, 1961
Creator:
Akagi, Hiroaki & Lehman, Richard L.
Object Type:
Report
System:
The UNT Digital Library
Hydromagnetic Ionizing Waves
One of the techniques by which highly ionized plasmas can be generated in the laboratory makes use of strong, electromagnetically driven shock waves propagating into a cold gas. In this paper the phenomenon is analyzed as a one-dimensional single-fluid hydromagnetic problem, neglecting dissipation behind the wave.
Date:
December 26, 1961
Creator:
Kunkel, Wulf B. & Gross, Robert A.
Object Type:
Report
System:
The UNT Digital Library
The Radiolysis Of Liquid Isobutane With Pulsed Electrons
Of the saturated hydrocarbons, isobutane represents the simplest case where specificity in radiolytic behavior owing to structural configuration should be apparent. The hydrogen bonded to the tertiary carbon atoms should, on the basis of bond strengths alone, be expected to be more reactive than other hydrogen atoms in the molecule. In order to investigate such specificity, liquid isobutane has been irradiated at 20' and an attempt made to identify and measure all products through the C8 (C<sub>8) hydrocarbons.
Date:
October 1961
Creator:
Yamamoto, B. Y.; Sciamanna, A. F. & Newton, Amos S.
Object Type:
Report
System:
The UNT Digital Library
A Recoil Study Of The Reaction C12(p,pn)C11 [formula]
Recoil ranges of C11 from the reaction C12(p,pn)C11 are presented for incident proton energies from 0.25 to 6.2 Gev. From these data it is concluded that a neutron evaporation mechanism cannot be the major mechanism. The result for incident energies of 3 and 6.2 Gev are consistent with a fast reaction consisting of a single inelastic nucleon-nucleon collision. Assuming this mechanism, an average kinetic energy of 19 Mev can be deduced for the struck neutron (before the collision) in the C12 nucleus.
Date:
October 24, 1961
Creator:
Singh, Sarjant & Alexander, John M.
Object Type:
Report
System:
The UNT Digital Library
Electromagnetic Properties Of A Charged Vector Meson
A systematic study is made of the electromagnetic properties of charged vector mesons. The various formalisms used to describe charged particles of spin 1 are compared, and a new first-order formulation of the Stuckelberg theory is developed.
Date:
October 12, 1961
Creator:
Young, James A. & Bludmen, Sidney A.
Object Type:
Report
System:
The UNT Digital Library
The Spectrophotometry Of Metal-Ammonia Solutions At Low Temperatures
Two types of apparatus are described for measuring the absorption spectra of metal-ammonia solutions with the Gary Model 14 Spectrophotometer. One apparatus was used for dilute solutions at -70'; the other was used for more concentrated solutions and had provision for holding the solutions at any temperature between their boiling points and -70'.
Date:
December 1961
Creator:
Gold, Marvin & Jolly, William L.
Object Type:
Report
System:
The UNT Digital Library