UNT Libraries Government Documents Department - 551 Matching Results

Search Results

prev Results: 97 - 120 next
open access

The Cosmotron Radio Frequency Accelerating System

Description: The proton beam in the Cosmotron is accelerated to an energy of 2.3 billion electron volts by a radio frequency voltage which is impressed across an insulated gap in the ferrite loaded accelerating cavity of the vacuum chamber. To maintain a constant orbit radius as the beam is accelerated, the frequency of the accelerating voltage must increase from the initial value of 370 kc/sec to 4200 kc/sec during the one second magnet pulse. Over the entire 11:1 frequency range, a minimum gap voltage of … more
Date: November 24, 1953
Creator: Rogers, Edwin, J. & Flotkin, M.
Item Type: Refine your search to only Report
open access

Crystal Structure of a Sodium Cobalt Molybdate

Description: The cobalt and molybdenum positions had been derived from a three-dimensional Patterson function based on complete data out to λ-1 sin θMo≈ 1. From the separation of the separation of the Mo atoms it was thought that the structure contained free, unlinked MoO4 -2 ions, and this, together with the observed density and analyses for Co and Mo, suggested that the composition was probably Co2(MoO4)3. The paucity of structural information on complex oxide systems and the interesting properties, both … more
Date: February 25, 1963
Creator: Ibers, James A. & Smith, G. W.
Item Type: Refine your search to only Report
open access

Cumulative Radiation Effects of Sexual Reproduction in Pine and Oak

Description: The sexual reproductive ability of a forest exposed to low level ionizing radiation is dependent on the sensitivity of primordial differentiation, meiotic processes leading to the formation of gametes, fusion of the gametes, and subsequent growth of the sporophytic generations. In this report it was shown that the initiation of reproductive primordia in Pinus rigida, Quercus ilicifolia, Quercus alba and Quercus coccinea is not unusually sensitive to irradiation. Trees which had been severely da… more
Date: 1962
Creator: Mergen, Francois & Stairs, G. R.
Item Type: Refine your search to only Report
open access

Current Studies of Fission Product Behavior at BNL

Description: Programs are under way at Brookhaven National Laboratory to study the behavior of fission products released from reactor fuel materials. Major emphasis has been placed on fission product iodine because of the physiological hazard associated with the I131 isotope. A complete reactor safety analysis, considering either a slow or rapid release of fission products, requires a knowledge of the chemical and physical states of the fission products during release, the extent of their release, and an un… more
Date: January 7, 1964
Creator: Castleman, A. W., Jr. & Salzano, F. J.
Item Type: Refine your search to only Report
open access

Cytochemistry of Delayed Radionecrosis of the Murine Spinal Cord

Description: In the vast field of radiation pathology we find pathologists, anatomists, and even physiologists busily at work, but the radiobiologist is conspicuously absent, although, according to Zirkle (1959), this field is clearly within his domain. Perhaps it is wise to take this broad hint of the scientifically so well equipped radiobiologist and to stay clear from an area in which an incalculable array of variables makes clearcut experimentation a hopeless venture, a priori. Perhaps it would be bette… more
Date: October 15, 1963
Creator: Zeman, Wolfgang
Item Type: Refine your search to only Report
open access

Cytogenetic Analysis of a Spontaneous Pre-Meiotic Mutation in Maize

Description: The paucity of pre-meiotic mutations in maize has prompted a cytogenetic analysis of one which occurred at the R locus. Cytogenetic tests of a spontaneous pre-meiotic R --> r mutation indicate that it is an autonomous mutation for the R locus. No evidence was found for a factor, other than the R locus, as a causal agent for the mutation. The mutant behaves as a stable r allele. No evidence was found for chromosomal alteration, pollen or transmission sterility. Thus, within the limits of the tes… more
Date: unknown
Creator: Dollinger, E. J. & Singleton, W. R.
Item Type: Refine your search to only Report
open access

Data Formats and Procedures for the ENDF Neutron Cross Section Library

Description: Report issued by the Brookhaven National Laboratory discussing the formats and procedures used at the ENDF Neutron Cross Section Library. As stated in the introduction, "this report describes the philosophy, data formats, and procedures that have been developed for the Evaluated Nuclear Data File (ENDF)" (p. 1-1). This report includes tables, and illustrations.
Date: March 1971
Creator: Drake, M. K. & Honeck, Henry C.
Item Type: Refine your search to only Report
open access

Decay Characteristics of Ξ- and Ξ° Hyperons

Description: In our continuing study of (K- + p) interactions at 2.24 Bev/c in the Brookhaven National Laboratory 20" Hydrogen Bubble Chamber, we have accumulated approximately 332 Ξ- → Λ + π- decays and 34 Ξ°→Λ + π° decays. The cascade hyperons were produced in the following reactions: [reactions not transcribed].
Date: unknown
Creator: Connolly, P. L.; Hart, E. L.; Kalbfleisch; Lai, K. W.; London, G.; Moneti, G. C. et al.
Item Type: Refine your search to only Report
open access

The Deflecting Mode in the Circular Iris-Loaded Waveguide of a RF Particle Separator

Description: The rf particle separator, proposed in 1959 by W.K.H. Panofsky and now in preparation for the Brookhaven Alternating Gradient Synchrotron, required a rf structure which gives a transverse impulse to a passing relativistic particle. In order to produce an accumulative transverse deflection of a traveling charged particle with an electromagnetic field, it is necessary that the field contains a synchronous component and in principle, waveguides and cavities are equivalent with respect to the parti… more
Date: October 25, 1962
Creator: Hahn, H.
Item Type: Refine your search to only Report
open access

Design and Performance of Bending and Quadrupole Magnets for the AGS Experimental Program

Description: During the early planning for experiments to be carried out at the Brookhaven AGS, it was decided that the beam-transport equipment should be kept to a minimum number of types, yet with sufficient flexibility that a wide variety of beams could be made up from the modules selected. This policy has been followed during the intervening years, with additions being made only in the total numbers of these modules and, as yet, no further types being fabricated. The types and their performance will be … more
Date: unknown
Creator: Blewett, M. H. & Danby, G. T.
Item Type: Refine your search to only Report
open access

Design Consideration for 80" Bubble Chamber

Description: The following general description of the theory and operation of a bubble chamber is presented so that firms who are interested in fabricating components for the Brookhaven 80" chamber will have a better understanding of the design parameters associated with it. This understanding, coupled with the fabricator's knowledge of manufacturing techniques, should enable the fabricators to suggest solutions to manufacturing problems consistent with requirements for chamber operation. In an effort to in… more
Date: January 7, 1964
Creator: Kassner, D. A.
Item Type: Refine your search to only Report
open access

Design Study for a 15-BeV Accelerator

Description: This report is the culmination of a year of progress and planning in the high-energy particle field. During this year the Brookhaven Cosmotron has been successfully completed and brought into operation for research at 2.3 Bev. Preliminary experimental results with the copious output of π-mesons are in process of publication. Multiple production of mesons has been observed, a few V-particles detected, and the interactions of π-mesons in hydrogen have been studied. Yet it already appears that hig… more
Date: June 30, 1953
Creator: Livingston, M., Stanley, Prof.; Ramsey, N. F., Prof.; Street, J. C., Prof.; Pound, R. V., Prof; Preston, W. M., Prof; Selove, W., Prof. et al.
Item Type: Refine your search to only Report
open access

Determination of Cholesterol Digitonide with Anthrone

Description: A new colorimetric method for the determination of cholesterol has been investigated. It makes use of the relatively stable green color given by a purified digitonin precipitate with the anthrone reagent of Dreywood. Equal precision can be obtained with the new method using 1/10 or less of the quantity of material required for present colorimetric methods.
Date: September 4, 1952
Creator: Sutton, Elisabeth & Nims, L. F.
Item Type: Refine your search to only Report
open access

Determination of Diffusion Cooling in Graphite by Measurement of the Average Neutron Velocity

Description: From Abstract: "The diffusion cooling coefficient in graphite has been determined by measuring the change in the asymptotic average velocity with buckling, by pulsed neutron methods. The times necessary to establish equilibrium spectra in graphite and heavy water have been measured and are reported."
Date: January 2, 1962
Creator: Starr, E. & De Villiers, J. W. L. (Jacobus Wynand Louw)
Item Type: Refine your search to only Report
open access

The Determination of Exchange Rates in Three-Compartment Steady-State Closed Systems Through the Use of Tracers

Description: Previous analyses of the behavior of tracers in three-compartment systems are incomplete, are scattered throughout the literature and are expressed in a confusing variety of notations. This article purports to unify the previous contributions and further to develop the application of the mathematical basis involved in the interpretation of experimental data, with emphasis on the relationship between the behavior of tracers and the exchange rates of their carriers in steady-state systems.
Date: unknown
Creator: Robertson, J. S.; Tosteson, D. C. & Gamble, J. L., Jr.
Item Type: Refine your search to only Report
open access

Determination of the Diffusivity of an Isotopic Medium

Description: In order to determine the diffusivity of a medium, it is sometimes desirable or necessary to devise a test which will not alter the physical properties of the medium. It is the purpose of this paper to discuss one such test for an isotropic medium which is homogeneous in one direction.
Date: unknown
Creator: Cannon, J. R.; Douglas, Jim Jr. & Jones, B. Frank Jr.
Item Type: Refine your search to only Report
open access

Determination of the Single Interstitial Migration Energy From Stored Energy and Thermal Resistivity Changes in Irradiated Graphite

Description: The model used to evaluate the single interstitial migration energy from property changes due to interstitials is extended to account for vacancy contributions. The annealing function obtained can be used to determine the relative contributions of the defects and is sufficiently sensitive to distinguish vacancy effects that are an order of magnitude less than interstitial effects. Application of the model to stored energy and thermal resistivity data yields the same values of the activation ene… more
Date: March 26, 1963
Creator: Schweitzer, Donald G.
Item Type: Refine your search to only Report
open access

Di-Interstitial Annealing During the First Neutron Irradiation of Graphite: The Mobility of C2

Description: Radiation and annealing mechanisms for dimensional and c-axis changes in which the di-interstitial can be mobile at any or all temperatures above absolute zero are shown to be concordant with earlier work used to determine the migration energy energy of single interstitials and the absolute rate of displacing atoms in graphite. The mechanisms account for the stability of c-axis and dimensional changes with time in the absence of irradiation and with observed c-axis annealing at room temperature… more
Date: February 1, 1963
Creator: Schweitzer, Donals G.
Item Type: Refine your search to only Report
open access

Diabetic Ketosis

Description: This technical report examines the recent findings, of Brookhaven National Laboratory and others, on the relation between diabetic ketosis and intermediary metabolism. This report compares new findings with past knowledge and considers new trends in research, theory, and the management of diabetic ketosis.
Date: 1962
Creator: Shreeve, Walton W.
Item Type: Refine your search to only Report
open access

Diffraction Studies of Possible Ordering in α-brass

Description: Recently, there has been some evidence to point to possible ordering in the α-brasses. Masumoto et al. have concluded from their specific heat measurements that there is a possibility of ordering in the α-brasses. In particular they observed an anomaly in the specific heat curves for the α-brasses for the temperature range from 200 to 260°C and explained these results upon the basis of a change in local or short range order in α-brasses at these temperatures. In connection with the study of rad… more
Date: March 29, 1954
Creator: Keating, David, T.
Item Type: Refine your search to only Report
Back to Top of Screen