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On Cratering: A Brief History, Analysis, and Theory of Cratering (open access)

On Cratering: A Brief History, Analysis, and Theory of Cratering

Cratering is a subject that has been studied by many investigators for many years for many purposes. These purposes range from experimental studies of physical properties to large scale excavations using explosive charges of kiloton size. In the past ten years considerable effort has been devoted to cratering experiments for the purposes of determining the effects of cratering by nuclear explosions, with recent accent on Plowshare applications. From the large amount of data available for craters in alluvian has been possible to establish very reliable relationships between charge size, depth of bursty crater radii, and crater depths. In addition it has been possible to construct a preliminary theory of the mechanics of explosive crater formation. The available experimental data for nuclear and high explosive craters are reviewed, with particular emphasis on the data for desert alluvium, and the pertinent relationships are derived. A theory of the important cratering mechanisms, which has been evolved on the basis of these data and data from other sources, is outlined. (auth)
Date: August 22, 1961
Creator: Nordyke, M. D.
Object Type: Report
System: The UNT Digital Library
EVALUATION OF ULTIMATE DISPOSAL METHOD FOR LIQUID AND SOLID RADIOACTIVE WASTES. PART I. INTERIM LIQUID STORAGE (open access)

EVALUATION OF ULTIMATE DISPOSAL METHOD FOR LIQUID AND SOLID RADIOACTIVE WASTES. PART I. INTERIM LIQUID STORAGE

As the first part of a study to evaluate the economics of the various steps leading to and including the permanent disposal of high-activity liquid and solid radioactive waste, costs of interim liquid storage of acid and alkaline Purex and Thorex wastes were estimated for storage times of 0.5 to 30 years. A 6- ton/day plant was assumed, processing 1500 tons/year of uranium converter fuel at a burnup of 10,000 Mwd/ton and 270 tons/year of thorium converter fuel at a burnup of 20,000 Mwd/ton. Tanks of Savannah River design were assumed, with stainless steel construction for acid wastes and mild steel construction for neutralized wastes. The operating cycle of each tank was assumed to consist of equal filling and emptying periods plus a full (or dead) period. With interim storage time defined as filling time plus full time, tank costs were minimum when full time was 40 to 70% of the interim storage time, using present worth considerations. For waste storage times of 0.5 to 30 years, costs ranged from 2.2 x 10/sup -3/ to 9.5 x 10/sup -3/ mill/kwh/sub e/ for acid wastes and from 1.7 x 10/sup -3/ to 5.1 x 10/sup -3/ mill/kwh/sub e/ for neutralized wastes. …
Date: August 22, 1961
Creator: Bradshaw, R.L.; Perona, J.J.; Roberts, J.T. & Blomeke, J.O.
Object Type: Report
System: The UNT Digital Library
Physics of antimatter-matter reactions for interstellar propulsion (open access)

Physics of antimatter-matter reactions for interstellar propulsion

At the stage of the antiproton-nucleon annihilation chain of events relevant to propulsion the annihilation produces energetic charged pions and gamma rays. If annihilation occurs in a complex nucleus, protons, neutrons, and other nuclear fragments are also produced. The charge, number, and energy of the annihilation products are such that annihilation rocket engine concepts involving relatively low specific impulse (I/sub sp/ approx. = 1000 to 2000 s) and very high I/sub sp/ (3 x 10/sup 7/ s) appear feasible and have efficiencies on the order of 50% for annihilation energy to propulsion energy conversion. At I/sub sp/'s of around 15,000 s, however, it may be that only the kinetic energy of the charged nuclear fragments can be utilized for propulsion in engines of ordinary size. An estimate of this kinetic energy was made from known pieces of experimental and theoretical information. Its value is about 10% of the annihilation energy. Control over the mean penetration depth of protons into matter prior to annihilation is necessary so that annihilation occurs in the proper region within the engine. Control is possible by varying the antiproton kinetic energy to obtain a suitable annihilation cross section. The annihilation cross section at low energies is …
Date: August 22, 1986
Creator: Morgan, D.L. Jr.
Object Type: Article
System: The UNT Digital Library
Criminal Procedure: Brief Summaries of Major Decisions of the "Warren Court" Relating to the Rights of Persons Accused of Crime (open access)

Criminal Procedure: Brief Summaries of Major Decisions of the "Warren Court" Relating to the Rights of Persons Accused of Crime

This report discusses Supreme Court decisions made during the tenure of Earl Warren as Chief Justice from 1953 to 1969 related to criminal procedure and the rights of the accused.
Date: August 22, 1969
Creator: Hutton, E. Jeremy
Object Type: Report
System: The UNT Digital Library
[RE: Nominations for Getty Center Orientation Film, August 22, 1996] (open access)

[RE: Nominations for Getty Center Orientation Film, August 22, 1996]

Photocopy of a letter from Julie Abel, the Getty Center, to Lila Crespin and the Regional Institute Grant Directors. Requesting information about possibly locations which to film the Getty Center's mission / programs and to show the visitors the film which will orients the Center's goals. The film will be fifteen minutes long, comprised of three segments that will highlight the important parts of their programs. Enclosed in the letter are details about the three segments and the ideas behind how the filming should take place. Copied on the letter are Leilani Lattin Duke, Val Marmillion and Kathy Talley-Jones.
Date: August 22, 1996
Creator: Abel, Julie
Object Type: Letter
System: The UNT Digital Library
Addition of bromine as a diagnostic gas to inertial confinement fusion target microspheres (open access)

Addition of bromine as a diagnostic gas to inertial confinement fusion target microspheres

Currently, direct fuel rho r measurements on Inertial Confinement Fusion (ICF) targets by neutron activation of the argon tracer gas mixed with the DT fuel would require a 100 fold increase in neutron yield. Bromine, on the other hand, has excellent properties for neutron activation analysis at neutron yields of 10two' to 10/sup 8/, when present at an internal pressure of from 0.1 to 0.2 atmospheres. Bromine addition is accomplished in a 2 furnace system using the dried-gel method of microsphere production. An upper furnace operated at 1500/sup 0/C is separated from a lower furnace by a cooled zone. The lower furnace is filled with bromine gas and operated at approximately 1250/sup 0/C. The upper furnace is the glass production furnace. The cooled zone in between the upper and lower furnace is to prevent the hot bromine gas from rising into the upper furnace. The microspheres pass through the cooled zone and immediately into the 1250/sup 0/C bromine furnace where the bromine permeates into the spheres.
Date: August 22, 1980
Creator: Morrison, R. L.
Object Type: Article
System: The UNT Digital Library
Numerical solution of the Schroedinger integral equation for dt. mu. Progress report (open access)

Numerical solution of the Schroedinger integral equation for dt. mu. Progress report

The Schroedinger Integral Equation is derived for an N-body system, and solutions for required Green's functions are obtained. The initial method of numerical solution has yielded the correct ground states and lower excited states of He (test case) and dt..mu... Steps are being taken to improve the numerical accuracy.
Date: August 22, 1986
Creator: Morgan, D.L. Jr.
Object Type: Report
System: The UNT Digital Library
[News Clip: Crime bill] captions transcript

[News Clip: Crime bill]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: August 22, 1994, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
Scaling of exploding pusher targets (open access)

Scaling of exploding pusher targets

A theory of exploding pusher laser pusher targets is compared to results of LASNEX calculations and to Livermore experiments. A scaling relationship is described which predicts the optimum target/pulse combinations as a function of the laser power.
Date: August 22, 1977
Creator: Nuckolls, J.H.
Object Type: Article
System: The UNT Digital Library
Antiproton-hydrogen atom rearrangement-annihilation cross section (open access)

Antiproton-hydrogen atom rearrangement-annihilation cross section

For antiproton energies of several eV or less, annihilation in matter occurs through atomic rearrangement processes in which the antiproton becomes bound to a nucleus prior to annihilation. Existing calculations of the antiproton-hydrogen atom rearrangement cross section are semiclassical and employ the Born-Oppenheimer approximation. They also employ various arguments in regard to the behavior of the system when the Born-Oppenheimer approximation breaks down at small antiproton-proton separations. These arguments indicate that rearrangement is essentially irreversible. In the present study, a detailed investigation was made of the antiproton-hydrogen atom system when the Born-Oppenheimer approximation breaks down. The results of this study indicate that the previous arguments were approximately correct, but that there is a significant probability for rearrangement reversing prior to annihilation. This probability is estimated to be about 20%. 8 refs., 4 figs., 2 tabs.
Date: August 22, 1986
Creator: Morgan, D.L. Jr.
Object Type: Article
System: The UNT Digital Library
[News Clip: Miller] captions transcript

[News Clip: Miller]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: August 22, 1994, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
On reactor type comparisons for the next generation of reactors (open access)

On reactor type comparisons for the next generation of reactors

In this paper, we present a broad comparison of studies for a selected set of parameters for different nuclear reactor types including the next generation. This serves as an overview of key parameters which provide a semi-quantitative decision basis for selecting nuclear strategies. Out of a number of advanced reactor designs of the LWR type, gas cooled type, and FBR type, currently on the drawing board, the Advanced Light Water Reactors (ALWR) seem to have some edge over other types of the next generation of reactors for the near-term application. This is based on a number of attributes related to the benefit of the vast operating experience with LWRs coupled with an estimated low risk profile, economics of scale, degree of utilization of passive systems, simplification in the plant design and layout, modular fabrication and manufacturing. 32 refs., 1 fig., 3 tabs.
Date: August 22, 1991
Creator: Alesso, H.P. & Majumdar, K.C.
Object Type: Article
System: The UNT Digital Library
The Oklahoma Democrat (Altus, Okla.), Vol. 5, No. 24, Ed. 1 Thursday, August 22, 1912 (open access)

The Oklahoma Democrat (Altus, Okla.), Vol. 5, No. 24, Ed. 1 Thursday, August 22, 1912

Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: August 22, 1912
Creator: Williams, R. T.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Logan County News. (Crescent, Okla.), Vol. 11, No. 48, Ed. 1 Saturday, August 22, 1914 (open access)

The Logan County News. (Crescent, Okla.), Vol. 11, No. 48, Ed. 1 Saturday, August 22, 1914

Weekly newspaper from Crescent, Oklahoma that includes local, state, and national news along with advertising.
Date: August 22, 1914
Creator: Frishman, Joseph
Object Type: Newspaper
System: The Gateway to Oklahoma History
Oklahoma State Register (Guthrie, Okla.), Vol. 28, No. 18, Ed. 1 Thursday, August 22, 1918 (open access)

Oklahoma State Register (Guthrie, Okla.), Vol. 28, No. 18, Ed. 1 Thursday, August 22, 1918

Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date: August 22, 1918
Creator: Golobie, John
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Oklahoma Leader (Guthrie, Okla.), Vol. 28, No. 32, Ed. 1 Thursday, August 22, 1918 (open access)

The Oklahoma Leader (Guthrie, Okla.), Vol. 28, No. 32, Ed. 1 Thursday, August 22, 1918

Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date: August 22, 1918
Creator: Niblack, Leslie G.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla. Terr.), Vol. 14, No. 7, Ed. 1 Thursday, August 22, 1901 (open access)

The Mangum Star. (Mangum, Okla. Terr.), Vol. 14, No. 7, Ed. 1 Thursday, August 22, 1901

Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date: August 22, 1901
Creator: Echols, R. C.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla.), Vol. 13, No. 7, Ed. 1 Wednesday, August 22, 1900 (open access)

The Mangum Star. (Mangum, Okla.), Vol. 13, No. 7, Ed. 1 Wednesday, August 22, 1900

Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date: August 22, 1900
Creator: Townsend, G. B.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Guthrie Daily News. (Guthrie, Okla. Terr.), Vol. 5, No. 1566, Ed. 1 Wednesday, August 22, 1894 (open access)

Guthrie Daily News. (Guthrie, Okla. Terr.), Vol. 5, No. 1566, Ed. 1 Wednesday, August 22, 1894

Daily newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date: August 22, 1894
Creator: Smith, Winfield Scott
Object Type: Newspaper
System: The Gateway to Oklahoma History
Weekly Oklahoma State Capital. (Guthrie, Okla.), Vol. 8, No. 18, Ed. 1 Saturday, August 22, 1896 (open access)

Weekly Oklahoma State Capital. (Guthrie, Okla.), Vol. 8, No. 18, Ed. 1 Saturday, August 22, 1896

Weekly newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date: August 22, 1896
Creator: Greer, Frank H.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Weekly News (Altus, Okla.), Vol. 19, No. 26, Ed. 1 Thursday, August 22, 1918 (open access)

The Altus Weekly News (Altus, Okla.), Vol. 19, No. 26, Ed. 1 Thursday, August 22, 1918

Weekly newspaper from Altus, Oklahoma that includes local, county, state, and national news along with advertising.
Date: August 22, 1918
Creator: Orr, J. P.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 22, No. 24, Ed. 1 Thursday, August 22, 1912 (open access)

The Guymon Herald. (Guymon, Okla.), Vol. 22, No. 24, Ed. 1 Thursday, August 22, 1912

Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date: August 22, 1912
Creator: Zimmerman, Warren
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Crowder City Guardian (Crowder, Indian Terr.), Vol. 2, No. 38, Ed. 1 Thursday, August 22, 1907 (open access)

The Crowder City Guardian (Crowder, Indian Terr.), Vol. 2, No. 38, Ed. 1 Thursday, August 22, 1907

Weekly newspaper from Crowder, Indian Territory that includes local, territorial, and national news along with advertising.
Date: August 22, 1907
Creator: Barrow, A. E.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Crowder City Guardian (Crowder, Oklahoma), Vol. 8, No. 48, Ed. 1 Friday, August 22, 1913 (open access)

The Crowder City Guardian (Crowder, Oklahoma), Vol. 8, No. 48, Ed. 1 Friday, August 22, 1913

Weekly newspaper from Crowder, Oklahoma that includes local, state, and national news along with advertising.
Date: August 22, 1913
Creator: Barrow, A. E.
Object Type: Newspaper
System: The Gateway to Oklahoma History