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Dependence of Positive Pion Production Cross Sections on Atomic Number at Low Energies

Description: A preliminary study of positive pion production from proton-nucleus collisions revealed that positive pion production cross sections agree more favorably with a Z 2/3 variation than with a variation proportional to the atomic number. A similar study on negative pion production has shown that negative pion yields from proton-nucleus collisions tend to vary in proportion to the number of neutrons in the nucleus. As a result an experiment was performed to investigate if there is a significant chan… more
Date: September 8, 1953
Creator: Sagane, Ryokichi, 1905-1969 & Dudziak, Walter F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MTA Mark II Accelerator, Drift Tube and RF Beam Geometry Perturbing Effect of Beam in A-12

Description: The question has arisen of how the beam in A-12 as a long resonant cavity might effect the frequency of operation and the field distribution. This study is published to make available the calculation of the direct beam effect as an illustration of general methods of attacking perturbing effects in resonant cavities.
Date: April 8, 1952
Creator: Good, Myron
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of k-o in a Uranium-Graphite Lattice

Description: Since the 25 content of the uranium to be used in a MTA multiplying lattice is quite uncertain at present, it is necessary to assume various degrees of depletion in order to estimate the multiplication constant K-o and the production of 49 in an infinite uranium-graphite lattice
Date: February 8, 1951
Creator: Adelman, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Free Radicals In Photosynthetic Systems

Description: The method of detecting unpaired electrons in liquid and solid systems by electron spin resonance is discussed. The significance of the hyperfine structure in electron spin resonance is discussed and the possible use of these structural features of the electron spin resonance spectrum to elucidate the nature of the photoproduced unpaired electrons in photosynthesizing systems is introduced.
Date: October 8, 1958
Creator: Calvin, Melvin, 1911-1997
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Resistance Measurements To 400 Kilobars

Description: A modification of the Bridgeman anvils is described. This modification permits studies to be made to a load of 400 kbars, about twice that previously available.
Date: November 8, 1960
Creator: Vaisnys, Juozas; Stromberg, Harold & Jura, George
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Theoretical Considerations on Cell Shape, Convection, and an Area Anomaly Pertinent to Developing a Moving Boundary Theory for Ultracentrifugation

Description: The intuitive concept that a sector shaped centrifuge cell is free from convection is criticized. Not only is a form of convection present for a single sedimenting species, but a more insidious type occurs in a mixture having an appreciable Johnston-Ogston effect. Rather than striving for convection-free sedimentation, the proposal is to utilize if possible an apparently harmless type of convection occurring in a very thin annulus in order to avoid the convection extending between boundaries in… more
Date: July 8, 1952
Creator: Trautman, Rodes
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Calculation of Geometrical Efficiency of Counters

Description: Let F be the flux of radiation going from a sample of radius R2 to a counter of radius B1 then the emitted intensity of radiation per unit solid angle. Then the flux between two elements of area do1 and do2 will be given by [equation] since [equation] and [equation]. Calculations and equations follow.
Date: August 8, 1952
Creator: Henrich, Louis R. (Louis Richard), 1908-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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