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Seismic Decoupling for Explosions in Spherical Cavities

Description: Abstract. A series of paired explosions in a salt mine near Winnfield, Louisiana, has been conducted to test a theory by Dr. A. L. Latter concerning seismic decoupling by underground cavities. The theory predicted a decoupling of about 100. 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. Shot sixes were from a 10 lb up to a few tons. Surface measurements were ma… more
Date: September 30, 1960
Creator: Adams, William M. & Carder, Dean S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hyperon and Negative K-Meson Masses

Description: The following report studies the interactions of K-mesons in nuclear track emulsions and measures range-energy.
Date: September 1957
Creator: Barkas, W. H.; Giles, P. C.; Heckman, Harry H.; Inman, Fred W.; Mason, C. J. & Smith, F. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Statistical Geometry Of Bubble Tracks

Description: An exact treatment of the structure of tracks in nuclear research emulsion recently was attempted with some success. Many of the proofs also appear to be generally valid for bubble tracks in Wilson chambers. This is a summary of the results that are applicable to tracks of charged particles in bubble chambers.
Date: September 28, 1960
Creator: Barkas, Walter H. (Walter Henry), 1912-1969
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Use of Controlled Photosynthesis for Maintenance of Gaseous Environment

Description: Abstract: "The problem of maintaining livable oxygen and carbon dioxide pressures in a closed space in which men must live leads to consideration of the possible use of the photosynthesis of green algae. A calculation based on the known respiratory rate of man and the photosynthetic rates of Chlorella indicates that it would be feasible to use algae for this purpose."
Date: September 1954
Creator: Bassham, James Alan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Macroscopic Properties of a One-Dimensional Plasma Confined by a Magnetic Field

Description: Abstract: "The quantities of interest in a confined plasma include the electric and magnetic fields, current density, diffusion velocity, temperature, pressure, and particle density. Equations governing the distribution of these seven variables are given in this report and special cases of a one-dimensional steady-state plasma are examined in detail. The solutions are given in graphical form."
Date: September 4, 1956
Creator: Batten, Hugh W. & Woods, Cornelius H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thermodynamic Properties Of Gaseous Metal Dihalides

Description: The second and third law methods of thermodynamics are used to obtain the enthalpies of vaporization of the halides of Be, Mg, Ca, Sr, Ba, Zn, Cd, Hg, Sn, Pb, Ti, V, Cr, Mn, Fe, Co, Ni and Cu. Molecular and free energy data necessary for such calculations are presented. The structure of bonding in these molecules is briefly discussed.
Date: September 1961
Creator: Brewer, Leo, 1919-2005; Somayajulu, G. R. & Brackett, Elizabeth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy Reception And Transfer In Photosynthesis

Description: The basic information about the path of carbon in photosynthesis is reviewed, together with the methods that were used to discover it. This has led to the knowledge of what is required of the photochemical reaction in the form of chemical species. Attention is then directed to the structure of the photochemical apparatus itself insofar as it is viewable by electron microscopy, and some principles of ordered structure are devised for the types of molecules to be found in the chloroplasts. From t… more
Date: September 23, 1958
Creator: Calvin, Melvin, 1911-1997
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Vibrational States Of The HD⁺ And HT⁺ Ions

Description: The vibrational eigenvalues belonging to the ground electronic state of the HD<sup>+ and HT<sup>+ ions have been calculated. These calculations have been done for the J = 0 rotational state and neglecting the dynamic corrections to the potential. For the HD<sup>+ ion we find twenty-two bound states, and for the HT<sup>+ ion twenty three bound states.
Date: September 29, 1960
Creator: Cohen, Stanley; Hiskes, John R. & Ridell, Robert J., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Liquid-Sodium Instability Experiment : Part I

Description: Abstract: "A magnetohydrodynamic model of a plasma-magnetic field instability, using liquid sodium, has been observed. The growth rate and wave length of the Taylor-type acceleration instability was observed to be in agreement with the theory of Kruskal and Schwarzschild."
Date: September 30, 1955
Creator: Colgate, Stirling A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Liquid-Sodium Instability Experiment : Part II

Description: Abstract: "A magnetohydrodynamic model of plasma-magnetic field instabilities, using liquid sodium, has been observed. The growth of flutes in the mirror geometry was observed for the case of [beta] = NKT/H²/8w = 1."
Date: September 30, 1955
Creator: Colgate, Stirling A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Small-Scale Instabilites of the Pinch and a Suggested Remedy: The Levitron

Description: Report discussing "experimental results on the classical stabilized pinch," "the usefulness of the Levitron in Stellarator-type operation," and "practical details of the levitation process." A configuration is presented which involves a "toroidal pinch tube inside which a rigid toroidal conductor is levitated by means of an induced magnetic field." Additionally, "an alternative scheme is considered, where the toroidal core is suspended from current-carrying wires, but this approach does not app… more
Date: September 1958
Creator: Colgate, Stirling A. & Furth, H. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Neutron Production by High-Energy Particles

Description: Abstract: "From neutron-yield measurements made with a MnSO4 detecting solution, the average number of neutrons produced per inelastic event is determined for a series of elements from lithium to uranium for 340-Mev protons, 190-and 315-Mev deuterons, 490-Mev He3 ions, and 90- and 160-Mev neutrons. The results are analyzed in an attempt to understand the total yield measurements for thick targets and to explain the variation of yield with the atomic number of the target."
Date: September 29, 1954
Creator: Crandall, Walter E. & Millburn, George P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transient Thermal Stress in Tubular Reactor Elements

Description: In this paper, a theoretical solution is developed for the transient thermal stress distribution in a reactor fuel tube of circular cross sections with spatially uniform internal power generation and forced convective heat transfer at the inner surface of the tube. Solution of the equation of heat conduction is done my means of a Laplace transform with subsequent application of the inversion integral to arrive at a final expression for the transient temperature distribution. The solution is of … more
Date: September 1960
Creator: Deverall, LaMar Ivan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy-Dependent Albedo

Description: From abstract: "Within the framework of age theory an expression is developed which represents the probability of a neutron being reflected with an energy loss corresponding to age, v, as a function of reflector thickness."
Date: September 20, 1954
Creator: Drummond, William E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Small-Angle Neutron-Proton Scattering at 90 and 290 Mev

Description: From abstract: "The relative differential neutron-proton scattering cross section has been measured in the range of center-of-mass angles from 5.1° to 36.0° for approximately 90-Mev neutrons and from 10.7° to 37.8° for approximately 290-Mev neutrons."
Date: September 14, 1954
Creator: Easley, James Warren
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

An Improved Gamma Detector Using Gamma Moderation

Description: Abstract: "Theoretical and experimental results of the effect of gamma moderation are described. A 6.7-fold enhancement factor was obtained with a 1/8-in. - thick sodium-iodide crystal when using gamma moderation and a Co-60 gamma source. A counter was designed and built to make the most use of gamma source. A counter was designed and built to make the most use of gamma moderation. The results indicate that this counter can be made energy independent over a wide region. Though the cost of the c… more
Date: September 3, 1959
Creator: Fox, Raymond
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary Studies on Electrical Propulsion Systems for Space Travel

Description: Report discussing low and high acceleration flight mechanics for interplanetary missions, as well as the energy limitation for electric propulsion systems powered by a nuclear energy source. From abstract: "An optimization procedure for low acceleration systems is given which leads to a simple relationship between mission requirements, payload fraction, power plant specific power, and exhaust velocity."
Date: September 22, 1958
Creator: Fox, Robert H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measuring Reactor Neutron Spectra with Threshold Detectors

Description: The use of threshold detector foils to measure the external neutron spectrum of two reactors is described. The foils employed are Pu236 to measure the total fast flux, U238 for the region above 1.5 Mev, S32 above 2.5 Mev, and Au197 for thermal neutrons. Scintillation counters ae used to determine the activity induce din the detectors. The foil-counting system is calibrated by used a Cockcroft-Walton accelerator as a fast neutron source. The results indicate a fission type spectrum at each react… more
Date: September 23, 1960
Creator: Grader, Roderick J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy Transfer Between Modified Maxwell Distributions

Description: Abstract: "A particularly conventional modified form of Maxwell distribution is chosen. The modified expressions for (a) the energy transfer from the ions to the electrons in a plasma and (b) the brehmestrahlung from the electrons are calculated. Using the expressions some possible steady-state conditions for the ion and electron gases are derived and compared with those for the usual Maxwell distributions."
Date: September 20, 1956
Creator: Greyber, Howard D. & Bing, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Plasma Heating by Transit-Time Magnetic Pumping in Single-Transit Systems

Description: Report discussing the heating of a plasma which passes through a series of magnetic pumping cells by applying the second-order theory of transit-time heating developed by Berger and Newcomb. From abstract: "Transit-time magnetic pumping in single-transit systems seems to be a feasible method of increasing plasma energy by amounts of the order of a factor of 10."
Date: September 1956
Creator: Hall, Laurence S.; Gardner, Andrew L. & Edwards, Donald A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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