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RADIOASTRONOMY AND COMMUNICATION THROUGH SPACE. Brookhaven Lecture Series Number 1
The lecture contains discussions on developments in radioastronomy, requirements for space travel to a place 12 light years away, and speculations for communicating through space. (B.O.G.)
Date:
November 16, 1960
Creator:
Purcell, E.
Object Type:
Report
System:
The UNT Digital Library
Course 2A, Volume 32. Communication Techniques
This booklet is the Course 2A, Volume 32 unit of an extension training course developed for Air Force personnel. This book discusses various skills, techniques, and forms of effective communication.
Date:
November 1960
Creator:
Air University (U.S.). Extension Course Institute.
Object Type:
Book
System:
The Portal to Texas History
Pseudoscalar Interaction in Nuclear Beta Decay
None
Date:
July 11, 1960
Creator:
Bhalla, C. P.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
DMM: A MULTIGROUP, MULTIREGION ONE-SPACE-DIMENSIONAL COMPUTER PROGRAM USING NEUTRON DIFFUSION THEORY. PART II. DMM PROGRAM DESCRIPTION
Operating instructions are presented for DMM, a Remington Rand 1103A program using one-space-dimensional multigroup diffusion theory to calculate the reactivity or critical conditions and flux distribution of a multiregion reactor. Complete descriptions of the routines and problem input and output specifications are also included. (D.L.C.)
Date:
December 31, 1960
Creator:
Kavanagh, D.L.; Antchagno, M.J. & Egawa, E.K.
Object Type:
Report
System:
The UNT Digital Library
Physics Division Summary Report
Preliminary results and data are given for eight expenimental and theoretical nuclear physics projects under investigation. Those projects not reported are listed separately with a reference to the last issue in which each appeared. Separate abstracts were prepared for the eight activities. (For preceding period see ANL-6214.) (W.D.M.)
Date:
November 1, 1960
Creator:
unknown
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
TABLE OF ENERGY LEVELS OF ASYMMETRIC EVEN NUCLEI WITH BETA-VIBRATION- ROTATION INTERACTION
The energy levels predicted by Davydov and Chaban's model were computed to compare theoretical predictions with experimental results. The computations were carried out for mu between 1.0, 0.90, 0.40, 0.35, and 0.1 and for gamma between 8, 9, 10, 12, 15, 20, 25, and 30 deg . (W.L.H.)
Date:
November 1, 1960
Creator:
Day, P.P.; Klema, E.D. & Mallmann, C.A.
Object Type:
Report
System:
The UNT Digital Library
Low-Energy Photopion Production From Pions and Neutral-Pion Decay
None
Date:
June 1, 1960
Creator:
Wong, H.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Two-Pion Exchange Contribution to the Higher Partial Waves of Nucleon- Nucleon Scattering
By means of the Mandelstam representation, expressions are obtained for the two-pion-exchange contributions to the higher partial waves of N-N scattering. A set of ten invariant amplitudes is selected, of which each member obeys the Mandelstam representation. Dispersion relations are written for the amplitudes in which the discontinuities are absorptive parts for N-bar-N scattering. By means of the unitarity condition the absorptive parts are expressed as a partial- wave expansion in terms of the pi pi - NN partialwave amplitudes of Frazer and Fulco, except for the contributions of the pole in the pi -N system which are treated exactly in order to ensure better convergence of the partial-wave expansion. The N-N transition amplitudes in the angular-momentum representation are expressed in terms of the invariant amplitudes. (auth)
Date:
June 1, 1960
Creator:
Cziffra, P.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
NEUTRON DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING SEPTEMBER 1, 1960
Research efforts in neutron physics are reported in the areas of light- water-moderated reactors, new reactors for BSF and TSF, critical experiments, experimental nuclear physics, experimental reactor physics, reactor theory, shielding research, radiation detector studies, plasma physics theory, and theoretical nuclear physics. Separate abstracts were prepared for the seventy sections of the report. (W.D.M.)
Date:
December 13, 1960
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Comparison of Calculated and Measured Gamma-Ray Dose Rates and Neutron Flux Distributions in the SRE Instrument Thimbles
None
Date:
August 1, 1960
Creator:
Spiegler, P.
Object Type:
Report
System:
The UNT Digital Library
PHYSICS DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING FEBRUARY 10, 1960
None
Date:
April 1, 1960
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Scattering of Positive Pions on Protons at 310 Mev: Recoil-Nucleon Polarization and Phase-Shift Analysis
None
Date:
September 16, 1960
Creator:
Foote, J. H.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Conversion ratio incentive for usig black mint in an E-N load
This report details the proposed E-N, tritium-plutonium producing reactor loading is made up of striped columns of lithium-aluminum (mint) target slugs and enriched uranium (.947 w/o U{sup 235}) slugs. Both target and uranium slugs are of the I & E geometry. The ratio of mint (N) to uranium (E) is determined by the requirement of sufficient k-excess to sustain an operable reactor. The designer of the lattice loading has a choice between natural lithium (7-5 w/o Li{sup 6}) or lithium enriched to {approximately} 38.5 w/o Li{sup 6} for the mint slugs, assuming enriched or ``black`` mint is available. It is possible to show at least 0.8% increase in total conversion ratio for an E-N load for enriched mint (38.5 w/o Li{sup 6}) over natural mint. The basis of the calculations rests on measured E-N length ratios for equivalent neutron multiplicative properties for both types of mint (in a dry pile) plus analytical calculations. It is shown that both increased Pu and H{sup 3} production are obtained by using blacker mint. The basic phenomena are (1) increased resonance capture in U{sup 238} due to more uranium volume in the black mint E-N lattice and (2) more efficient utilization of neutrons in …
Date:
January 28, 1960
Creator:
Nilson, R.
Object Type:
Report
System:
The UNT Digital Library
Reactor Physics Calculations for the Msre
A compilation is presented of results obtained to date from a number of reactor physics calculations for the molten salt reactor experiment (MSRE). Included are one-dimensional multigroup and two-dimensional twogroup calculations of critical mass, flux, and power density distributions; gamma heating in the core can, reactor vessel, and core support grid; drain tank criticality; and an estimate of the beta , gamma , and delayed neutron dose rates due to fission products in the fuel contained in the pump bowl. For a cylindrical core 54 in. in diameter and 66 in. high, graphite-mcderated with 8 vol% fuel salt, the calculated critical loading is 0.76 mole% uranium (93.3% U/sup 235/), which is equivalent to a critical mass of 16 kg. At a reactor power of 10 mw, the peak power density in the core assuming a homogeneous mixure of fuel salt and graphite is 10 watts/cm/sup 3/, the average power density is 4 watts/cm/sup 3/. The computed peak thermal flux is 7.3 x 10/sup 13/ neutrons/cm/sup 2/ sec and the average is 2.5 x l0/sup 13/ neutrons/cm/sup 2/ sec. Gamma heating prcduces a power density of 0.2 watts/cm/sup 3/ in the core wall at the midplane and 0.4 watts/cm/sup 3/ in …
Date:
July 26, 1960
Creator:
Nestor, Jr, C. W.
Object Type:
Report
System:
The UNT Digital Library
Thermonuclear Plasma Containment in Open-Ended Systems
"A survey is presented of the theory of confinement in open-ended systems (such as mirror machines and cusped geometries) together with the slight amount of experimental confrontation with theory that exists at present."
Date:
September 30, 1960
Creator:
Grad, Harold, 1923-
Object Type:
Report
System:
The UNT Digital Library
Project Cowboy : Use of Large Cavities to Reduce Seismic Waves From Underground Explosions
This technical report analyzes an experiment designed to test the theory of seismic decoupling of underground explosives proposed by Latter, LeLevier, Martinelli, and McMillan [1959]. The theory calculated the amplitude of a 1.7-kiloton nuclear explosive in a hole in salt and compares it to the measured value of the 1.7-kt Rainier shot in tuff at the same distance. A decoupling factor of about 300 resulted. The experiment, called Cowboy, was designed to test the decoupling principle by carrying out a series of eight high-explosive shots in two spheres made in a salt dome and nine tamped shots for comparison purposes. The seismic data reported here was obtained primarily at 14,000 and 22,000 feet from the shot at frequencies of 10 to 30 cps. A salt-to-salt decoupling factor of 100 was obtained which is consistent wit the predicted 300 tuff-to-salt factor. When the sphere was over-driven so that the walls did not move elastically (a condition which violates the theory), decoupling factors of 10 and 30 were measured. The report interprets the seismic data to give the dependence of decoupling on the various parameters of the experiment. The decoupling deduced from measurements made 80 feet from the shot points is found …
Date:
September 29, 1960
Creator:
Herbst, Roland F.; Werth, Glenn C. & Springer, Donald L.
Object Type:
Report
System:
The UNT Digital Library
Project Cowboy : Final Report : Seismic Decoupling for Explosions in Spherical Cavities
A series paired explosions in a salt mine near Winnfield, Louisiana, has been conducted to test a theory by A.L. Latter concerning seismic decoupling by underground cavities. The theory predicted a decoupling of 132 Free-field and surface measurements from an explosion in either a 6-ft- or a 15-ft-radius spherical cavity were compared with similar measurements from a completely tamped explosion of equal size. Shot sizes were from 20 pounds up to a ton. Surface measurements were made out to 100 km and covered the frequency range from 0.05 to 100 cps. The experiments confirmed that decoupling does occur. For explosions that produce an average cavity pressure up to one-fifth and possible more of the lithostatic overburden pressure, seismic waves were decoupled by the 100, i.e., two order of magnitude. Even for explosions producing an average cavity pressure of six times the lithostatic overburden pressure, the seismic waves were decoupled by 20 -- more than a full order of magnitude. Minimum decoupling factors as a function of frequency are presented.
Date:
August 1960
Creator:
Adams, William M. & Allen, DeWitt C.
Object Type:
Report
System:
The UNT Digital Library
A New Approach to Teaching Grammar in the Ninth Grade
By presenting first, statement of theory, and then concrete examples and original exercises, wherever practical, this thesis suggests possible ways to combine linguistic methods with traditional ones to make a more effective approach to teaching language in the ninth grade.
Date:
June 1960
Creator:
Smith, Anne Bendon
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Neptune Event--a Nuclear Explosive Cratering Experiment
The Neptune device was detonated underground in a room approximately 12 x 17 x 10 ft, at the end of a hooked drift. The yield was 115 plus or minus 15 tons. The shot and its effects are described and the major contributions of the data to the theory and prediction of cratering phenomenology are indicated. (W.D.M.)
Date:
April 19, 1960
Creator:
Shelton, A V; Nordyke, M D & Goeckermann, R H
Object Type:
Report
System:
The UNT Digital Library
Pulsed Neutron Measurement of Control Rod Worth
Reactivity measurements made by the pulsed neutron technique were compared with results obtained by conventional techniques. The pulsed neutron results were in good agreement with those obtained by stable period measurement and rod drop. Differential effectiveness of partially inserted rods was shown to be well represented by elementary perturbation theory. Finally, the pulsed neutron technique was found to be the only good method for measurement of large reactivity changes.
Date:
August 25, 1960
Creator:
Kolar, O. C. & Kloverstrom, F. A.
Object Type:
Report
System:
The UNT Digital Library
DISPERSION STRENGTHENING OF IRON-ALUMINUM BASE ALLOYS: A FEASIBILITY STUDY
The feasibility of improving the mechanical properties at 1700 to 1800 deg F of oxidation-resistant Fe-Al-Cr alloys by means of a refractory dispersion was explored. A literature search was conducted, preliminary experimental determinations of properties of the alloy and its oxides were carried out, and certain mathematical relations between dispersion charaeteristics and metallurgical variables were derived. The results indicate that the alloys can be strengthened sufficiently by using a dispersion with an interparticle spacing of about 2 to 3 mu . High-temperature native oxides of the Fe-Al-Cr alloy consist largely of Al/sub 2/O/sub 3/ and in theory would serve as a aatisfactory second phase. (auth)
Date:
December 27, 1960
Creator:
King, B.
Object Type:
Report
System:
The UNT Digital Library
Dispersion Strengthening of Iron-Aluminum Base Alloys: A Feasibility Study
The feasibility of improving the mechanical properties at 1700-1800°F of oxidation-resistant Fe-Al-Cr alloys by means of a refractory dispersion has been explored. A literature search was conducted, preliminary experimental determinations of properties of the alloy and its oxides were carried out, and certain mathematical relations between dispersion characteristics and metallurgical variables were derived. The results indicate that the alloys can be strengthened sufficiently by using a dispersion with an interparticle spacing of about 2-3 µ. High-temperature native oxides of the Fe-Al-Cr alloy consist largely of Al2O3 and in theory would serve as a satisfactory second phase.
Date:
December 27, 1960
Creator:
King, Blake
Object Type:
Report
System:
The UNT Digital Library
π<sup>+</sup>-p ELASTIC SCATTERING AT 310 Mev: PHASE-SHIFT ANALYSIS
A comprehensive phase-shift analysis of {pi}{sup +}-p elastic-scattering data at 310-Mev incident-pion laboratory kinetic energy has been performed. The experimental data utilized include measurements of the differential and total cross sections and of the recoil-proton polarization. The D-wave phase shifts were found to be definitely needed in order to attain an adequate fit to the data. A general search for phase-shift solutions was carried out, using S-, P-, and D-wave phase shifts. One solution--of the Fermi type--was found that fits the data significantly better than any of the other solutions obtained. The calculated errors in the phase shifts of this set vary from 0.4 to 0.6 deg. Because it was felt that these errors might be deceivingly restrictive, the effects of small nuclear F-wave phase shifts on the results of the analysis were investigated and were found to be large; not only are the uncertainties in the original Fermi-type solution increased, but additional sets of phase shifts arise that fit the data well. One of these new solutions is similar to the original Fermi set except that the magnitudes of the phase shifts in this new fit are in general larger than those in the initial solution, and the signs …
Date:
November 16, 1960
Creator:
Foote, James H.; Chamberlain, Owen; Rogers, Ernest H. & Steiner, Herbert M.
Object Type:
Report
System:
The UNT Digital Library