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SEARCH FOR MAGNETIC MONOPOLES IN THE LUNAR SAMPLES OF APOLLO11.

Description: An electromagnetic search for magnetic monopoles of the minimum size predicted by Dirac, or of any larger magnitude, has been performed on 8.37 kilograms of lunar surface material returned by the Apollo 11 crew. No monopole was found. This experiment sets new limits on the production cross section for monopoles, and on their occurrence in cosmic radiation.
Date: December 1, 1969
Creator: Alvarez, Luis W.; Eberhard, Philippe H.; Ross, Ronald R. & Watt,Robert D.
Partner: UNT Libraries Government Documents Department
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COLLECTIVE-FIELD ACCELERATION

Description: Diverse methods proposed for the acceleration of particles by means of collective fields are reviewed. A survey is made of the various currently active experimental programs devoted to investigating collective acceleration, and the present status of the research is briefly noted.
Date: July 4, 1969
Creator: Sessler, Andrew M.
Partner: UNT Libraries Government Documents Department
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PHYSICS WITH AND PHYSICS OF COLLIDING ELECTRON BEAMS

Description: When particle physics is a closed subject which has been condensed into a text book, the material will surely be organized by concepts and not according to what fact was learned on what accelerator. But short of that day facilities must be designed, planned, and developed, and experiments must be executed on one of a number of available accelerators; and a very necessary point of view is to ask what physics can be done with one facility, in contrast to another. It is in this spirit that, in thi… more
Date: November 18, 1969
Creator: Pellegrini, Claudio & Sessler, Andrew M.
Partner: UNT Libraries Government Documents Department
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SYNTHESIS OF MONO-, DI-, AND POLYNITROXIDES. CLASSIFICATION OF ESRSPECTRA OF FLEXIBLE DINITROXIDES DISSOLVED IN LIQUIDS AND GLASSES

Description: The synthesis of flexible biradical strain-gauges which could be anchored onto two sites of a deformable biological structure had been attempted. Qualitative relationships between the possible conformations of the biradicals and the observed ESR spectra provide guidelines for further synthetic work. Some of the nitroxides synthesized and characterized are: R-CO-R{sub 1}-N-(CH{sub 2}){sub n}-R{sub 2}-N-CO-R, where R is 1-oxyl-2,2,6,6-tetramethyl pyrroline bonded at the 3-position, n = 2,3 and R{… more
Date: November 1, 1969
Creator: Ferruti, P.; Gill, D.; Klein, M. P.; Wang, H. H.; Entine, G. & Calvin, M.
Partner: UNT Libraries Government Documents Department
open access

A METHOD FOR STATIC-FIELD COMPRESSION IN AN ELECTRON-RING ACCELERATOR

Description: A review of methods for static-field compression of an electron ring is shown to suggest advantages for a method in which there is no axial acceleration or deceleration of the ring. In the method proposed here the static magnetic field itself is o such a character that the electrons are neither focused nor defocused in the axial direction. The integrity and movement of the ring through the compressor is controlled by a small traveling magnetic well. The feasibility of creating such a traveling … more
Date: February 20, 1969
Creator: Laslett, L.Jackson & Sessler, Andrew M.
Partner: UNT Libraries Government Documents Department
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Domestic tar sands and potential recovery methods: a review

Description: Present knowledge of United States tar sands, including physical properties, occurrence, reserves, and recovery methods, is reviewed and evaluated. Tar sands are oil-, bitumen-, asphalt-, tar-, or petroleum-impregnated rock from which little hydrocarbon material is recoverable by conventional crude oil production techniques. Tar sand oil has been produced by steam injection and underground combustion techniques and by mining methods. However, efficient application of nonmining recovery techniqu… more
Date: January 1, 1969
Creator: Spencer, G. B.; Eckard, W. E. & Johnson, F. S.
Partner: UNT Libraries Government Documents Department
open access

FAST BEAM CHOPPERS FOR THE ELECTRON-RING ACCELERATOR

Description: Two beam choppers were constructed which produce an approximately square, 20-ns pulse of 3+-MeV electrons out of the best portion of the 300-ns Astron beam or an 8-{micro}s microwave electron linac beam for injection into the electron-ring accelerator (ERA) compressor. The choppers are impedance-matched traveling-wave devices which deflect the beam with equal strength electric and magnetic forces, and are powered with either three-electrode spark gaps or thyratrons and a 20-ns pulse line. The e… more
Date: February 7, 1969
Creator: Faltens, Andris & Kerns, Cordon.
Partner: UNT Libraries Government Documents Department
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Fields and First Order Perturbation Effects in Two-DimensionalConductor Dominated Magnets

Description: General expressions are given for the field and its expansion coefficients produced by a two dimensional conductor structure surrounded by iron with a circular inside boundary. Saturation effects are described in terms of the tangential field at that boundary. The effects of the following types of perturbations are discussed: displacement, rotation and error excitation of a conductor, change of conductor shape, and modification of the inside contour of the iron. A design criterion is given to m… more
Date: July 1, 1969
Creator: Halbach, K.
Partner: UNT Libraries Government Documents Department
open access

Momentum Spectra of Charged Pions Produced in Proton-ProtonInteractions between 13 and 28.5 GeV/c

Description: Proton-proton interactions with four or more charged particles in the final state are studied over a range of incident momenta between 13 and 28.5 GeV/c. Topology cross sections are presented. The center-of-mass momentum distributions of {pi}{sup +} and {pi}{sup -} are determined and are successfully parameterized. The {pi}{sup +} and {pi}{sup -} momentum spectra are found to have approximately the same shape. Multiple fireball production is not required by our data.
Date: August 1, 1969
Creator: Smith, Dennis B.; Sprafka, Robert J. & Anderson, Jared A.
Partner: UNT Libraries Government Documents Department
open access

Multiperipheral Dynamics.

Description: No Description Available.
Date: January 1, 1969
Creator: Chew, G. F.
Partner: UNT Libraries Government Documents Department
open access

First Order Perturbation Effects in Iron-Dominated Two-DimensionalSymmetrical Multipoles

Description: The effects of several perturbations are investigated. They are: modification of the shape of a pole, error excitation, displacement, and rotation of a pole. The effects are described in terms of changes of multipole coefficients. General relationships between some of these coefficients are described, and formulae are derived that allow their calculation for a model 2N-pole magnet. Numerical values of these coefficients are given for a quadrupole, sextupole, and octupole.
Date: April 1, 1969
Creator: Halbach, K.
Partner: UNT Libraries Government Documents Department
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