2,655 Matching Results

Search Results

Advanced search parameters have been applied.

Spectrometric Techniques for Measuring Environmental Gamma Radiation

Description: From Introduction: "We discuss in detail the equipment, calibration procedures, and techniques used to analyze the spectra, present evidence to substantiate the validity of the dose rate estimates, and examine several problems associated with field measurements, in particular the effects of radon migration from the soil, soil moisture, and fallout."
Date: October 1964
Creator: Beck, Harold L.; Condon, William J. & Lowder, Wayne M.
Partner: UNT Libraries Government Documents Department

Norfolk-Peninsula Area (ARMS-II)

Description: From Introduction: "The ARMS-II Norfolk - Peninsula area survey was one many that have been flown for the CETO since the nationwide ARMS program was started (1958). Figure 2 shows the location of the areas that have been completed to date. The purpose of the program is to measure the present environmental levels of gamma radiation in areas around nuclear facilities and planned nuclear activities."
Date: December 6, 1961
Creator: Guillou, R. B.
Partner: UNT Libraries Government Documents Department

Preliminary Investigation of Effects of Gamma Radiation on Age-Hardening Rate of an Aluminum-Copper Alloy

Description: "A preliminary investigation was made to determine the effects of gamma radiation on the age-hardening rate of an aluminum-copper alloy at temperatures of 32 and 70 degrees Fahrenheit. The gamma radiation from a 100-milligram radium source appeared to have no significant effect on the age-hardening rate of the alloy. A metallographic examination of the test specimens showed no microstructural changes that could be attributed to gamma radiation" (p. 1).
Date: June 20, 1947
Creator: Kittel, J. Howard
Partner: UNT Libraries Government Documents Department

Parr Area (ARMS-II)

Description: From Purpose of Survey: "The ARMS-II Parr area survey was one of many that have been flown for the CETO since the nationwide ARMS program was started (1958). Figure 2 shows the location of the areas survey as of Apr. 1, 1964. The purpose of the program is to measure the present environmental levels of gamma radiation in areas around nuclear facilities and planned nuclear activities."
Date: April 1964
Creator: Guillou, R. B.
Partner: UNT Libraries Government Documents Department

Process Monitor Analysis Victoreen Model 350

Description: Abstract: An analysis of the improved Model Number 350 Process Monitor was made so that it could be determined if this instrument would fulfill the need for gamma radiation detection instruments in the production buildings of Y-12. The results of these tests indicated the possibility of marked improvement in the monitor characteristics with minor redesigns. After these improvements have been made, this instrument will be a satisfactory monitor for this area.
Date: May 1, 1947
Creator: Harter, J. A. & Olson, E. L.
Partner: UNT Libraries Government Documents Department

Las Vegas Area (ARMS-II)

Description: From Abstract: "An Aerial Radiological Measuring Survey (ARMS) of the Las Vegas area was made for the Civil Effects Test Operations, Division of Biology and Medicine, U.S. Atomic Energy Commission, by Edgerton, Germeshausen & Grier, Inc., between May 21 and June 23, 1961. The survey was part of a nationwide program to measure present environmental levels of gamma radiation. Approximately 6000 traverse miles were flown, at an attitude of 500 ft above the ground, in a 100-mile square centered near Las Vegas. The EG&G ARMS-II instrumentation was used in the survey."
Date: October 1961
Creator: Guillou, R. B.; Hand, J. E. & Borella, H. M.
Partner: UNT Libraries Government Documents Department

Two-phonon excitations in <sup>170</sup>Er

Description: Recent experiments at the GEANIE/WNR facility and the University of Kentucky accelerator have yielded strong evidence for a two-gamma excitation in <sup>170</sup>Er. This new case can be added to a handful of previously identified examples of two-gamma vibrations, all of them discovered in this decade. In this paper the experimental evidence for a two-phonon excitation <sup>170</sup>Er is presented and the current state of understanding of these structures is reviewed in the context of this and other recent findings.
Date: September 29, 1998
Creator: Archer, D E; Becker, J A; Bernstein, L A; Garrett, P E; Johns, G D; Kadi, M et al.
Partner: UNT Libraries Government Documents Department

Spectral gamma-ray logging report for the six new characterization boreholes in the 100-FR-1 operable unit

Description: Six characterization boreholes were drilled, sampled, logged, and abandoned in the 100-FR-1 Operable Unit. The geophysical logging was carried out with the Radionuclide Logging System (RLS) to determine the levels of radioactive contaminants in the subsurface. Five of the six boreholes penetrated contamination that was successfully assayed with the RLS data.
Date: September 13, 1996
Creator: Meznarich, R. A.
Partner: UNT Libraries Government Documents Department

Two photon physics at RHIC

Description: Because the two photon cross section is proportional to Z{sup 4}, heavy ion colliders offer an unmatched luminosity. However, because nuclei have finite sizes, the photon spectrum is gradually cut off by a nuclear form factor. For RHIC, this cutoff occurs at a few GeV; below this energy, RHIC will have the highest {gamma}{gamma} luminosity in the world when it turns on. In addition to the high rates, because Z{alpha} {approximately} 0.6, the nuclear environment provides a window to strong field QED and new phenomena like multiple pair production. To study {gamma}{gamma} physics, regions where the nuclei interact hadronically must be avoided; this leads to roughly a factor of two loss in usable luminosity. The rates expected by the Solenoidal Tracker at RHIC (STAR) collaboration will be given. Backgrounds will be discussed, along with several rejection techniques.
Date: May 1, 1995
Creator: Klein, S.
Partner: UNT Libraries Government Documents Department

Polarization of Bremsstrahlung

Description: Abstract: Numerical information necessary to an experimental study of the polarization of bremsstrahlung is presented. One may conclude that it is possible to produce significantly polarized γ-ray beams with existing electron accelerators. These beams will provide a new tool for the study of photonuclear reactions over a wide range of energy.
Date: September 3, 1954
Creator: Karplus, Robert & Reifman, Alfred
Partner: UNT Libraries Government Documents Department

A SYSTEM FOR GENERATING GAMMA RAY CROSS SECTION DATA FOR USE WITH THE IBM- 7090 COMPUTER

Description: A system for generating detailed tables of gamma ray cross section data has been devised for use on the IBM7090 computer. This sy;tem obviates the preparation of large amounts of cross section data. It also provides a scheme for rapid access to these tabulated values. (auth)
Date: May 16, 1962
Creator: Penny, S.K.; Emmett, M.B. & Trubey, D.K.
Partner: UNT Libraries Government Documents Department

Radiation Problems of the Chemical Plant

Description: "Absorption measurements have been made in a large body of water to evaluate the contribution to the radiation intensity produced by the degradation of radiation without absorption. Radiation intensities three times those expected from a simple exponential absorption were found. Scattering from the air of gamma radiation has been measured and has been found to agree satisfactorily with theoretical predictions. The penetration of radiation through curved pipes in shielding has been measured and been found to be a flat topped function. A 2" pipe bent in the arc of a circle of 7' chord and a 10' radius gives a reduction intensity over the intensity in air at the same distance of 2.5X10⁴."
Date: December 12, 1942
Creator: Borst, Lyle B. & Wollan, Ernest Omar
Partner: UNT Libraries Government Documents Department

TABLE OF RADIOISOTOPES ARRANGED ACCORDING TO HALF-LIFE

Description: The tabulated data on radioisotopes are taken directly from the General Electric Chart of the Nuclides, Fifth Edition. The half lives, decay particles and energies, gamma energies, and total energy or mass are included in the table. (J.E.D.)
Date: December 1, 1957
Creator: Daniels, E. comp.
Partner: UNT Libraries Government Documents Department

A MONTE CARLO CODE FOR DEEP PENETRATIONS OF GAMMA RAYS

Description: Paper presented at Shielding Information Meeting, May 14-15, 1956, Marietta, Ga. This code employs special techniques for the express purpcse of tryirg to obtain reasonable estimates of deep penetrations of gamma rays in an infinite medium emitted from a point monoenergetic source. The code is presently in the debugging'' stage and wlll be tested agninst well known standards before it is used for production. (auth)
Date: June 1, 1958
Creator: Penny, S.K.
Partner: UNT Libraries Government Documents Department