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Office of Scientific & Technical Information Technical Reports
1,229
Technical Report Archive and Image Library
721
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448
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207
USGS Topographic Map Collection
159
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35
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5
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2
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2
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Atomic Energy Commission Reports
264
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112
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112
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110
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103
AEC research and development report
91
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77
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61
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49
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2,364 Matching Results
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The Doppler Effect in Fast Neutron Reactors
Report issued by the APDA over studies conducted on the Doppler Effect in fast neutron reactors. Methods and results of the studies are presented and discussed. This report includes tables, and illustrations.
Date:
June 1960
Creator:
Nicholson, Richard Benjamin
Object Type:
Report
System:
The UNT Digital Library
HAFEVER: An Inelastic Scattering Code for the IBM 704 Computer
Report issued by the APDA over HAFEVER, a code developed for the IBM 704 computer. As stated in the introduction, "HAFEVER is an IBM 704 code which calculates the energy exchange inelastic scattering cross section" (p. 3). Descriptions of the code and the theory behind the code are discussed. This report includes tables.
Date:
September 1960
Creator:
Friedman, M. A. & Zweifel, P. F.
Object Type:
Report
System:
The UNT Digital Library
United States Earthquakes, 1960
Report discussing earthquake activity in the United States during 1960. The report is broken down by regions and has sections for specific earthquakes.
Date:
1960
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Tungsten Resources of Montana: Deposits of the Mount Torrey Batholith, Beaverhead County
Report issued by the Bureau of Mines over the tungsten deposits on Beaverhead County, Montana. As stated in the introduction, "this report presents information obtained from July 1955 to September 1957 on tungsten deposits in and near the Mount Torrey batholith" (p. 1). This report includes tables, maps, illustrations, and photographs.
Date:
1960
Creator:
Pattee, Eldon C.
Object Type:
Report
System:
The UNT Digital Library
Application of Buckley-Leverett Techniques in Oil-Reservoir Analysis
Report issued by the Bureau of Mines over new techniques of oil-reservoir analysis. The methods used are presented. This report includes tables, and graphs.
Date:
1960
Creator:
Higgins, R. V.
Object Type:
Report
System:
The UNT Digital Library
Tables of the Bessel functions Yo(x), Y1(x), Ko(x), 0<=x<=1
Report presenting tables for certain Bessel functions.
Date:
1960
Creator:
United States. National Bureau of Standards.
Object Type:
Report
System:
The UNT Digital Library
Saline Water Conversion by Direct Freezing With Butane
Report presenting a study of a plant to produce 10,000,000 gallons per day of fresh water from sea water. The process used is direct freezing brought about by the evaporation of a hydrocarbon refrigerant in contact with sea water, washing the ice free of saline liquor, and melting the ice to potable water by the condensation of butane vapor.
Date:
1960
Creator:
Karnofsky, George & Steinhoff, Paul F.
Object Type:
Report
System:
The UNT Digital Library
Injury statistics as an aid in preventing accidents in metal and nonmetallic mines
Circular produced by the U.S. Bureau of Mines to promote safety through a series of reports on accident prevention in mines. According the the scope statement, "This first section of the revised series of circulars covers various phases of accident prevention at metal and nonmetallic mines. It presents compilations of statistical data on past accident experience, based on injuries resulting from accidents. This information shows how accident-injury records can be used in planning, executing, and measuring the effectiveness of accident-prevention programs" (p. 2).
Date:
1960
Creator:
United States. Bureau of Mines.
Object Type:
Report
System:
The UNT Digital Library
Petroleum and Natural Gas Fields in Wyoming
Report issued by the Bureau of Mines over the oil and gas fields of Wyoming. As stated in the summary, "this study contains individual reports on 271 oil and gas fields in Wyoming. The location of each field is given; and, where available, maps of the fields, surface formations, and elevations" (p. 1).
Date:
1960
Creator:
Biggs, Paul & Espach, Ralph H.
Object Type:
Report
System:
The UNT Digital Library
A RESONANCE IN THE Lambda pi SYSTEM
The authors report a study of the reaction K{sup -} + p {yields} {Lambda}{sup 0} + {pi}{sup +} + {pi}{sup -} produced by 1.15 Gev/c K{sup -} mesons and observed in the Lawrence Radiation Laboratory's 15-in. hydrogen bubble chamber. A preliminary report of these results was presented at the 1960 Rochester Conference. The beam was purified by two velocity spectrometers. A hyperon/observed during the run and the preliminary cross sections for various K{sup -} reactions at 1.15 Bev/c have been reported previously. Reaction (1) was the first one selected for detailed study, because it appeared to take place with relatively large probability and because the event, a 2-prong interaction accompanied by a V, was easily identified. In a volume of the chamber sufficiently restricted so that the scanning efficiency was near 100%, 255 such events were found. These events were measured, and the track data supplied to a computer which tested each event for goodness of fit to various kinematic hypotheses. The possible reactions, the distribution of events, and the corresponding cross sections are given in Table I. An event was placed in a given category of Table I if the {chi}{sup 2} probability for the other hypotheses was < …
Date:
October 24, 1960
Creator:
Alston, Margaret; Alvarez, Luis W.; Eberhard, Philippe & Wojcicki, Stanley G.
Object Type:
Report
System:
The UNT Digital Library
Flow Properties of Superfluid Systems of Fermions
The nonspherically symmetric solutions to the Bardeen-Cooper-Schrieffer theory are given a physical interpretation in terms of an anisotropic fluid model. These solutions have been used previously to predict a phase transition in liquid by He{sup 3} by Emery and Sessler and Anderson, Morel, Brueckner, and Soda. An investigation of the flow properties of such systems is made that involves the calculation of the effective mass for flow in a straight channel and the moment of inertia of a cylindrical container of the liquid. The angular dependent energy-gap characteristic of this type of theory leads to an effective mass for flow that depends on the angle between the axis of symmetry of the fluid and the direction of flow. It also vanishes as the absolute temperature tends to zero, although not as rapidly as for a spherically symmetric gap. The moment of inertia, when the symmetry direction for the fluid and the rotation axis are the same, is simply related to the mass for flow.
Date:
May 16, 1960
Creator:
Glassgold, A. E. & Sessler, A. M.
Object Type:
Report
System:
The UNT Digital Library
Coherent Electromagnetic Effects in High-Current Particle Accelerators: [Part] 3. Electromagnetic-Coupling Instabilities in a Coasting Beam
The electromagnetic interaction of an intense relativistic coasting beam with itself, including the effect of a confining nonperfect vacuum tank, or a quiescent rf cavity, is investigated theoretically. It is shown that the resonances that may occur between harmonics of the particle circulation frequencies and the electromagnetic modes of the cavities can lead to a longitudinal instability of the beam. A criterion for stability of the beam against such longitudinal bunching is obtained as a restriction on the shunt impedance of the rf cavity, or the Q of the vacuum tank. This criterion contains the energy spread and intensity of the coasting beam, as well as the parameters of the accelerator. Numerical examples are given which indicate that in general the resonances with the vacuum tank will not cause instabilities, while those with an rf cavity can be prevented from causing instabilities by choosing the shunt impedance at a sufficiently low but still convenient value.
Date:
August 4, 1960
Creator:
Laslett, L. J.; Neil, V. Kelvin & Sessler, A. M.
Object Type:
Article
System:
The UNT Digital Library
Metallurgical Engineering Program report for June 1960
None
Date:
July 8, 1960
Creator:
Treciokas, V.P.
Object Type:
Report
System:
The UNT Digital Library
FURTHERSTUDIES ON STERILITY PRODUCED IN MALE MICE BY DEUTERIUMOXIDE
The authors have previously reported that deuterium oxide in the drinking water of either male or female mice produces sterility. An investigation of some of the conditions--with particular reference to time--of deuterium oxide treatment to produce sterile C{sub 57} male mice indicated that the sensitive phase of sperm production centered around the late prophase of meiosis. In some experiments, although D{sub 2}O was almost completely absent during maturation of the sperm, and when the mice mated, these sperm exhibited the effects of their much earlier contact with D{sub 2}O. No viable offspring were obtained from these matings. They concluded that the presence of D{sub 2}O during the late prophase and meiotic divisions interfered with the normal construction or division (or both) of genetic material. It was suggested that changes in the forces, principally hydrogen bonds, in macromolecules affected their structural characteristics and resulted in abnormal division. The objective of the experiments reported here was to determine the phases of embryonic development of the mouse at which the lethal action of deuterium oxide on sperm is manifested. These investigations on embryonic growth initiated by sperm developed in D{sub 2}O have yielded additional evidence that D{sub 2}O severely damages the genetic material …
Date:
June 1, 1960
Creator:
Hughes, Ann M.; Bennett, Edward L. & Calvin, Melvin.
Object Type:
Report
System:
The UNT Digital Library
A Possible Phase Transition in Liquid He3
A possible phase transition in liquid He{sup 3} has been investigated theoretically by generalizing the Bardeen, Cooper, and Schrieffer equations for the transition temperature in the manner suggested by Cooper, Mills, and Sessler. The equations are transformed into a form suitable for numerical solution and an expression is given for the transition temperature at which liquid He{sup 3} will change to highly correlated phase. Following a suggestion of Hottelson, it is shown that the phase transition is a consequence of the interaction of particles in relative D-states. The predicted value of the transition temperature depends on the assumed form of the effective single-particle potential and the interaction between He{sup 3} atoms. The most important aspects of the single-particle potential are related to the thermodynamic properties of the liquid just above the transition temperature. Two choices of the two-particle interaction, oonstituent with experiments, yield a second-order transition at a temperature between approximately 0.01 K and 0.1 K. The highly correlated phase should exhibit enhanced fluidity.
Date:
January 29, 1960
Creator:
Emery, V. J. & Sessler, A. M.
Object Type:
Report
System:
The UNT Digital Library
ELECTRON-SPIN-RESONANCE STUDIES ON PHOTO-SYNTHETIC MATERIALS
A number of organisms have been examined for their ability to produce electron-spin-resonance signals at low temperatures in response to illumination. The efficiency of the response is of the order of not less than 5%, and the wavelength for maximum response is generally slightly on the longer side of the wavelength of maximum absorption, with a minimum appearing at the wavelength of maximum absorption.
Date:
May 11, 1960
Creator:
Sogo, Power B.; Carter, Louise A. & Calvin, Melvin.
Object Type:
Report
System:
The UNT Digital Library
Subsonic capability of Pratt and Whitney turbojet power plants
None
Date:
March 23, 1960
Creator:
Nicoll, H. E.
Object Type:
Report
System:
The UNT Digital Library
Hole-Hole Interactions and the Properties of Nuclear Matter
Recently a number of authors have suggested modifications of the Brueckner theory of nuclear matter so as to include hole-hole interactions, as well as particle-particle interactions. Iwamoto has demonstrated that in a perturbation theory calculation the inclusion of hole-hole interaction makes no change in the ground-state energy through second order. The singular two-body potential between nucleons makes it difficult, however, to conclude anything about the contribution of these terms in nuclear matter. The formal similarity between the equation of Iwamoto and the equation for the energy gap in nuclear matter, coupled with the fact that the energy gap is very small at normal density, indicates that the effect of hole-hole interactions is probably only a very small change in the ground-state energy of nuclear matter. It is the point of this note to show that this conclusion is in fact correct, the demonstration proceeding by use of the separation method for evaluating the energy of nuclear matter.
Date:
April 4, 1960
Creator:
Moszkowski, S. A. & Sessler, A. M.
Object Type:
Report
System:
The UNT Digital Library
The Energy Gap in Nuclear Matter
The magnitude of the energy gap in nuclear matter associated with a highly correlated ground state of the type believed to be important in the theory of superconductivity has been evaluated theoretically. The integral equation of Cooper, Mills, and Sessler is linearized and transformed into a form suitable for numerical solution. The energy gap, calculated by using an appropriate single-particle potential and the Gammel-Thaler two-body potential, is found to be a very strong function of the density of nuclear matter, and of the effective mass at the Fermi surface. It is concluded that the magnitude of the energy gap for nuclear matter should not be compared directly with experimental values for finite nuclei, although the results suggest that if the theory is extended to apply to finite nuclei it probably would be in agreement with experiment.
Date:
January 31, 1960
Creator:
Emery, V. J. & Sessler, A. M.
Object Type:
Report
System:
The UNT Digital Library
SOME PHOTOCHEMICAL AND PHOTOPHYSICAL REACTIONS OP CHLOROPHYLL ANDITS RELATIVES
The solution photochemistry of chlorophyll and chlorophyll analogs is described. Many cases of electron transfer to or from the porphyrin macrocycle have been found, but in no case has any very large degree of energy storage been achieved. Because of the very rapid back-reaction for products with a {Delta}F of approximately -30 kcal, some solid state models in which such an energy storage might be achieved are described and their possible relation to the natural photosynthetic apparatus is given. We can see that while the solid state model (phthalocyanine) allows an approach from a somewhat different point of view, the net result is the same as what was sought, but so far not found, when we looked at the solution chemistry of chlorophyll (and chlorophyll model substances), namely, the transfer of an electron, or hydrogen atom, from the excited porphyrin to an electron acceptor at a high reduction level which can be used to reduce the ultimate carbon dioxide reducers, followed by the donation of an electron ultimately from water to the remaining radical ion, or lattice, which produces the net results of the transfer of the hydrogen from water to carbon dioxide.
Date:
April 11, 1960
Creator:
Calvin, Melvin
Object Type:
Report
System:
The UNT Digital Library
CHARGE-EXCHANGE SCATTERING OF NEGATIVE PIONS BY HYDROGEN AT 230,260, 290, 317 AND 371 MeV
The differential cross section for charge-exchange scattering of negative pions by hydrogen has been observed at 230, 260, 290, 317, and 371 Mev. The reaction was observed by detecting one gamma ray from the {pi}{sup 0} decay with a scintillation-counter telescope.
Date:
March 18, 1960
Creator:
Caris, John C
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
COHERENT ELECTROMAGNETIC EFFECTS IN HIGH-CURRENT PARTICLE ACCELERATORS: I. INTERACTION OF A PARTICLE BEAM WITH AN EXTERNALLY DRIVEN RADIO-FREQUENCY CAVITY
A calculation is made of the interaction of a beam of particles in an accelerator with the radio-frequency cavity that provides the accelerating mechanism of the machine. A Hamiltonian for synchrotron motion is employed that makes possible the simultaneous solution of Maxwell's equations and the Vlasov equation, so that a self-consistent distribution of particles in synchrotron phase space is determined. The effective voltage on the cavity due to the beam of charged particles is of the order of magnitude of the product of the total circulating current in the accelerator and the shunt impedance of the rf cavity. It has the net effect of producing a total voltage on the cavity which is both less than the applied voltage, and shifted in phase with respect to it. The increase in the stable phase angle required so the particles will remain in phase with the accelerating radio frequency is calculated. The decrease in total voltage and increase in stable phase angle result in a decrease in stable phase space available for acceleration, and convenient expressions are given for these quantities in terms of parameters of the accelerator. It is shown that the consequences of the induced voltage may be alleviated by …
Date:
July 1, 1960
Creator:
Neil, V. Kelvin & Sessler, Andrew M.
Object Type:
Report
System:
The UNT Digital Library
n+-p ELASTIC SCATTERING AT 310 Mev: REC0IL-NUCLEONPOLARIZATION
The recoil-proton polarization in {pi}{sup +}-p elastic scattering at 310-Mev incident-pion laboratory kinetic energy has been experimentally measured at four scattering angles with scintillation counters. Polarization values obtained, related rms experimental errors, and mean center-of-mass recoil angles are: +0.044 {+-} 0.062 at 114.2 deg. =0.164 {+-} 0.057 at 124.5 deg, -0.155 {+-} 0.044 at 133.8 deg, and -0.162 {+-} 0.037 at 145.2 deg. The sign of the polarization is defined to be positive when a preponderance of the recoil protons had their spin vectors pointing in the direction of {rvec P}{sub i} x {rvec p}{sub f}, where this quantity is the cross product of the initial and final momentum vectors of the conjugate pions. A beam of 1 x 10{sup 6} pions per sec incident upon a 1.0-g/cm{sup 2}-thick liquid-hydrogen target produced the recoil protons, which were then scattered by a carbon target at a mean energy varying with recoil angle from 113 to 141 Mev. The polarization of the recoil protons was analyzed by measuring the asymmetry produced in the carbon scattering. A proton beam of known polarization was used to determine the analyzing ability (measured asymmetry divided by the polarization of the incident protons) of the system at …
Date:
November 16, 1960
Creator:
Foote, James H.; Chamberlain, Owen; Rogers, Ernest H.; Steiner,Herbert M.; Wiegand, Clyde E. & Ypsilantis, Thomas.
Object Type:
Report
System:
The UNT Digital Library
Supersonic capability of Pratt and Whitney turbojet power plants
None
Date:
March 23, 1960
Creator:
Thome, P.G.
Object Type:
Report
System:
The UNT Digital Library