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in publisher: "U.S. Naval Radiological Defense Laboratory"  
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Response of a Low-Geometry Scintillation Counter to Fission and Other Products

Description: Abstract: The theoretical response of a low-geometry scintillation counter to any photon-emitting nuclide whose decay scheme is known is developed. It is used to compute the counting rate, as a function of time, of (1) individual and total fission products resulting from. 10^4 simultaneous slow-neutron fissions of U^235 and (2) several other nuclides for 10 initial atoms. The calculations extend from ~45 min to 301 days after fission.
Date: February 4, 1959
Creator: LaRiviere, P. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Simple Calibration and Checking Facility for Fast and Slow Neutron Detectors

Description: From introduction: The principal work described below is the development and tests of a slow neutron flux generator based on a generator developed at the University of California (UCRL 8359, W. Patterson, Roger Wallace, "A Method of Calibrating Slow Neutron Detectors"). It is shown that a tolerance flux density of slow neutrons results within a cubical cavity 15 inches on an edge with 4-inch-thick walls of water or paraffin wax when a plutonium-beryllium source emitting about 7 million neutrons… more
Date: January 28, 1959
Creator: Redmond, A. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Alpha Survey Radiac for Field Use

Description: Abstract: An alpha survey radiac employing a photomultiplier tube and scintillation detector has been developed. The instrument utilizes transistor circuitry and operates from two standard flashlight batteries. Four linear ranges are provided with full scale indication on the highest range corresponding to 10,000 g /m2 Pu2 39. The instrument was designed with .a separable probe and a telescoping extension for easier ground monitoring. A thorium metal source is attached to the instrument housing… more
Date: May 14, 1959
Creator: Sinclair, K. & Kiyoi, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of Elevated Temperatures on the Properties of Portland Cement Mixtures Related to Surface Removal and Decontamination

Description: From abstract: The effect of heat on the surface removal of concrete was studied by conducting brush tests on samples which had been subjected to prolonged high temperatures in an oven or in direct contact with an oxy-propane flame. Other methods of heat-treating surface layers of concrete were investigated by direct application of an oxy-aluminum torch on the surface and by the exothermic chemical reactions of pyrotechnic compositions placed directly on the surface.
Date: August 25, 1955
Creator: Heiskell, R. H.; Black, R. H.; Crew, R. J. & Lee, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of High Intensity Radiant Energy on Skin: [Part] 1. Type of Energy and Its Relation to Energy Delivery Rate

Description: Abstract: Burn lesions were produced by radiant energy, 3100 A to 22000 A, on depilated rat skin. The gross and microscopic pathological changes so caused are described and correlated with the amounts of incident energy and the rate of energy delivery. Within the limits studied, 0.2 to 64 cal./cm.2/sec. and 0.1 to 8.0 seconds, it was found that increasing the rate of energy delivery lowered the amount of energy required to produce a specified degree of tissue injury. The tissue changes were in … more
Date: March 17, 1952
Creator: Sheline, Glenn E.; Alpen, Edward L.; Kuhl, P. R. & Ahokas, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Requirements for Military Radiacs: [Part] 2. Effect of the Operator on the Energy-Directional Response of Portable Radiation Instruments

Description: "This report presents the results of experiments designed to determine the response of selected military high-range radiacs to extended gamma radiation fields with and without a phantom (simulated operator)." (from Abstract)
Date: December 16, 1963
Creator: Wasson, H. R. & Williams, D. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

THE RADIOLOGICAL ASSESSMENT AND RECOVERY OF CONTAMINATED AREAS

Description: The Civil Effects Test Operation Exercise CEX-57.1 following Operation Plumbbob was carried out to obtain information on decontamination procedures that could be used as radiological countermeasures. The test was conducted on D + 1 and D + 2 days after shot Coulomb C. Data were obtained on reclamation of land areas by scraping with a motorgrader, on fire-hosing and scrubbing a concrete- slab roof, and on fire-hosing a composition roof. In addition, some shielding data were obtained for a small … more
Date: March 1, 1958
Creator: Miller, C.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

USE OF La$sup 140$ AS RADIO-TRACER IN (PRE-BUGGY) CHEMICAL EXPLOSIONS. PREPARATION AND DETERMINATION OF ITS REACTION WITH ENVIRONMENTAL MATERIALS

Description: The pre-Buggy experiment was designed to measure the fraction of vented radioactivity from a series of HE underground detonations containing radioactive sources. Capsules containing curie amounts of La/sup 140/ were sufficient to provide a radiotracing of the debris which resulted from the detonation. Particle size measurements of the debris indicated that La/sup 140/ was adsorbed on the surface of the soil particles. Some 96% of the activity was associated with sub-sieve particles representing… more
Date: April 1, 1963
Creator: Lane, W.B.; Nuckolls, M.J. & Railey, R.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Some Radiochemical and Physical Measurements of Debris From an Underground Nuclear Detonation

Description: Fallout samples were collected from 2600 feet to 19,000 feet from ground zero in order to determine the mass per unit area, gamma activity per unit area, particle size distribution, and specific activity versus particle size of the fallout; to determine the gamma decay rate and spectra of the samples; to perform leaching and exchange studies on the radioactive debris; to measure the release of gaseous fission product iodine; and to determine the radiochemical composition of the fallout particul… more
Date: June 1, 1963
Creator: Lane, W. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fallout Studies and Assessment of Radiological Phenomena. Preliminary Report

Description: Data were obtained to evaluate the attenuation of photons, emitted from a fallout field, due to the surface roughness of the terrain. A study was made to determine the effect of the shot tower on the fallout material. Particles for comparison were collected from two detonations of equal scaled height, one tower supported and the other balloon supported. Data on time-dependent phenomena were recorded, as were physical characteristics of the fallout material. The use of small balloons as instrume… more
Date: November 1, 1957
Creator: Egeberg, L.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Naval Aerial Photographic Analysis

Description: The procedures and results of extensive pre- and postshot aerial photographic coverage by naval aircraft are described and evaluated. Objectives were to use highperformance photo aircraft to document pre- and postshot ground zero area conditions, to provide aerial photographs for immediate onsite use in operations, and to determine the unique advantages, if any, of this type of photographic coverage. One preshot and three postshot photo missions were run over the ground zero area by flights of … more
Date: January 1, 1963
Creator: Vuillemot, F. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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