500 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Beta-Plus Decay Radioisotopes"  
Results: 1 - 24 next
open access

1/2/Sup +/. -->. 1/2/Sup -/ Beta Decay of /Sup 19/Ne and the Parity Nonconserving Nn Force

Description: A branching ratio of (1.20 +- 0.20) x 10/sup -4/ is obtained for the ..beta../sup +/ decay of /sup 19/Ne to the 110 keV 1/2/sup -/ level of /sup 19/F. This transition (presumably dominated by the ..delta..J/sup ..pi../ = 0/sup -/ axial charge operator) provides a crucial test of wavefunctions used in interpreting the parity mixing of the ground and 110 keV levels of /sup 19/F. These wavefunctions, which yield a parity mixing larger than that observed experimentally, also predict too large a ..b… more
Date: 1978~
Creator: Adelberger, E. G.; Hindi, M. M.; Hoyle, C. D.; Swanson, H. E. & Von Lintig, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

1-/sup 11/C-D-glucose and related compounds

Description: The novel compounds 1-/sup 11/C-D-glucose, 1-/sup 11/C-D-mannose, 1-/sup 11/C-D-galactose, 2-/sup 11/C-D-glucose, 2-/sup 11/C-D-mannose and 2-/sup 11/C-D-galactose which can be used in nuclear medicine to monitor the metabolism of glucose and galactose can be rapidly prepared by reaction of the appropriate aldose substrate with an alkali metal /sup 11/C-labeled cyanide followed by reduction with a Raney alloy in formic acid.
Date: January 26, 1982
Creator: Shiue, Chyng-Yann & Wolf, Alfred P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

N-13 Ammonia for the Noninvasive Evaluation of Myocardial Blood Flow by Positron Emission Computed Tomography

Description: The kinetics and characteristics of nitrogen-13 labelled ammonia as an indicator of blood flow in the myocardium were evaluated in open-chest dogs. Its utility as an imaging agent was tested in animals and man. (PSB)
Date: January 1, 1979
Creator: Schelbert, H. R. & Phelps, M. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

16. 3 eV neutron capture in /sup 107/Ag: nuclear structure of /sup 108/Ag. [Transitions, J correlations,. pi. ]

Description: The ..gamma.. rays from neutron capture in the 0- resonance of /sup 107/Ag at 16.3 eV were studied. Thirteen primary transitions populate spin 1 levels in /sup 108/Ag below an energy of 1.5 MeV. Transitions from low lying levels change in intensity by as much as a factor of 2 between thermal neutron capture (largely spin 1) and the 0- resonance, indicating a strong correlation of the population with level spin. 7 references.
Date: January 1, 1978
Creator: Orr, G. B.; Kane, W. R. & Smith, G. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

1983 environmental monitoring report, Sandia National Laboratories, Albuquerque, New Mexico

Description: Sandia National Laboratories (SNL) is located south of Albuquerque on Kirtland Air Force Base. Because radionuclides are potentially released from its research activities, SNL has a continuing environmental monitoring program which analyzes for cesium-137, tritium, uranium, alpha emitters, and beta emitters in water, soil, air, and vegetation. Measured radiation levels in public areas were consistent with local background in 1983. The Albuquerque population received an estimated 0.250 person-re… more
Date: April 1, 1984
Creator: Millard, G. C.; Gray, C. E. & O'Neal, B. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

1985 annual site environmental report for Argonne National Laboratory

Description: This is one in a series of annual reports prepared to provide DOE, environmental agencies, and the public with information on the level of radioactive and chemical pollutants in the environment and on the amounts of such substances, if any, added to the environment as a result of Argonne operations. Included in this report are the results of measurements obtained in 1985 for a number of radionuclides in air, surface water, ground water, soil, grass, bottom sediment, and milk; for a variety of c… more
Date: March 1, 1986
Creator: Golchert, N.W.; Duffy, T.L. & Sedlet, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

1989 Environmental monitoring report, Sandia National Laboratories, Albuquerque, New Mexico

Description: This 1989 report contains monitoring data from routine radiological and nonradiological environmental surveillance activities. Summaries of significant environmental compliance programs in progress such as National Environmental Policy Act documentation, environmental permits, environmental restoration, and various waste management programs for Sandia National Laboratories in Albuquerque (SNL, Albuquerque) are included. The maximum offsite dose impact was calculated to be 8.8 {times} 10{sup {mi… more
Date: May 1, 1990
Creator: Hwang, S.; Chavez, G.; Phelan, J.; Parsons, A.; Yeager, G.; Dionne, D. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Actinide production in /sup 136/Xe bombardments of /sup 249/Cf

Description: The production cross sections for the actinide products from /sup 136/Xe bombardments of /sup 249/Cf at energies 1.02, 1.09, and 1.16 times the Coulomb barrier were determined. Fractions of the individual actinide elements were chemically separated from recoil catcher foils. The production cross sections of the actinide products were determined by measuring the radiations emitted from the nuclides within the chemical fractions. The chemical separation techniques used in this work are described … more
Date: August 1, 1985
Creator: Gregorich, K.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Activation of building air in a Tokamak Engineering Test Facility

Description: The production of radionuclides by neutron reactions in the building air of a conceptual Tokamak Engineering Test Facility has been calculated. The short-lived radionuclides /sup 13/N, /sup 16/N and /sup 41/Ar are all found to greatly exceed their maximum permissable concentration values. Longer-lived radionuclides /sup 3/H, /sup 14/C and /sup 39/Ar are also found to be produced in significant concentrations. The present results are compared with values calculated for three other fusion devices… more
Date: September 1, 1980
Creator: Leonard, B.R. Jr. & Perry, R.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advances in the Helium-Jet Coupled on-Line Mass Separator RAMA. [Recoil Atom Mass Analyzer]

Description: General improvements to the on-line mass separator RAMA (Recoil Atom Mass Analyzer) have yielded a greater reliability and efficiency for some elements. A new utilitarian helium-jet chamber has been installed to facilitate quick target and degrader foil changes in addition to a new ion source holder. A higher efficiency hollow-cathode, cathode-extraction ion source, for lower melting point elements (< 1200/sup 0/C) has also been designed. Tests with the beta-delayed proton emitter /sup 37/Ca… more
Date: January 1, 1980
Creator: Moltz, D. M.; Aysto, J.; Cable, M. D.; Parry, R. F.; Haustein, P. E.; Wouters, J. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An aerial radiological survey of Technical Areas 2, 21, and 53 and surroundings, Los Alamos National Laboratory, Los Alamos, New Mexico

Description: An aerial radiological survey of the entire Los Alamos National Laboratory was flown in September 1982. The data from a part of the survey, Technical Areas 2, 21, and 53, are presented here along with pertinent data from an October 1975 survey of limited areas of Los Alamos. The data from Technical Area 15, another part of the survey, will be published in another report. Contour maps of the gamma survey data show some Cs-137 activity in Los Alamos Canyon as well as in DP Canyon beside TA-21. So… more
Date: September 1, 1990
Creator: Fritzsche, A.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aerial radiological survey of the United States Department of Energy's Battelle Nuclear Science Facility, West Jefferson, Ohio, date of survey: May 1977

Description: An aerial radiological survey to measure terrestrial gamma radiation was carried out over the United States Department of Energy's Battelle Nuclear Science Facility located in West Jefferson, Ohio. Gamma ray data were collected over a 5.5 km/sup 2/ area centered on the facility by flying east-west lines spaced 61 m apart. Processed data indicated that on-site radioactivity was primarily due to radionuclides currently being processed due to the hot lab operations. Off-site data showed the radioa… more
Date: May 1, 1979
Creator: Feimster, E.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Airborne radioactive effluent study at the Savannah River Plant

Description: Under the Clean Air Act, Sections 112 and 122 as amended in 1977, the Office of Radiation Programs (OPR) of the United States Environmental Protection Agency is currently developing standards for radionuclides emitted to the air by several source categories. In order to confirm source-term measurements and pathway calculations for radiation exposures to humans offsite, the ORP performs field studies at selected facilities that emit radionuclides. This report describes the field study conducted … more
Date: July 1, 1984
Creator: Blanchard, R.L.; Broadway, J.A.; Sensintaffar, E.L.; Kirk, W.P.; Kahn, B. & Garrett, A.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Alpha-decay studies in the lead region

Description: Alpha particle emission was observed for the new isotopes /sup 184/ /sup 185/Tl as well as for the previously known nuclides /sup 186/ /sup 187/Tl. Also determined were the alpha decay half-lives for lead isotopes with A less than or equal to 192. 8 references. (JFP)
Date: January 1, 1979
Creator: Toth, K.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Alumina column Rb-82 generator

Description: The use of an alumina column for the adsorption of radioactive Sr for the generator production of 75-sec /sup 82/Rb was evaluated in both batches and column experiments using /sup 85/Sr and cyclotron-produced /sup 82/Sr. Comparisons of alumina, Bio-Rex 70 and Chelex 100 ion exchangers were made to determine Sr adsorption, /sup 82/Rb elution yield and Sr breakthrough. The adsorption of Sr is similar for alumina and Chelex 100 but different for Bio-Rex 70. Alumina and Chelex 100 exhibit a small f… more
Date: October 1, 1977
Creator: Yano, Y. & Roth, E.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Amchitka Radiobiological Program. Final report, July 1970-December 1979

Description: The Amchitka Radiobiological Program, to collect biological and environmental samples for radiological analyses, began in 1970 and continued through 1979. The principal objective was to determine the extent of radionuclide contamination from worldwide atmospheric fallout and from the detonation of three underground nuclear tests on Amchitka. Leakage of radionuclides from the underground test sites would be suspected if the amount of contamination was significantly greater than could be attribut… more
Date: November 1, 1982
Creator: Sibley, T.H. & Tornberg, L.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Amchitka Radiobiological Program. Progress report, January 1977--December 1977. [/sup 3/H, /sup 90/Sr, /sup 239/Pu, /sup 240/Pu, /sup 40/K, /sup 7/Be]

Description: The Amchitka Radiobiological Program began in 1970 and is a continuing program to collect biological and environmental samples for radiometric analyses. An account of the program from July 1970, to December 1976, has been given in seven previous progress reports from the Laboratory of Radiation Ecology to the Nevada Operations Office of the U.S. Department of Energy. This report is an account of the program for calendar year 1977. Results of analyses for samples collected in September 1977 have… more
Date: July 1, 1978
Creator: Seymour, A.H. & Johnson, A.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Amchitka Radiobiological Program. Progress report, January-December 1978

Description: The Amchitka Radiobiological Program began in 1970 and is a continuing program to collect biological and environmental samples for radiometric analyses. This report is an account of the program for calendar year 1978. Results of analyses for samples collected in August 1978 have been added to the tables of Seymour and Johnson (1978) which summarize the Amchitka program from 1970 to 1977 and include analyses for: (1) gamma-emitting radionuclides in freshwater, birds, lichens, marine algae, marin… more
Date: July 1, 1979
Creator: Tornberg, Larry D. & Nakatani, Roy E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of factors limiting the geometric resolution of a positron imaging device

Description: Large-area, positron-sensitive detectors are used in annihilation coincidence systems for studies with positron-decay radiopharmaceuticals. Factors which limit the spatial resolution in such systems are analyzed. These factors include: (1) the intrinsic spatial resolution of the detector, (2) parallax errors, (3) range of positrons in tissue, and (4) angular deviation of the coincident photon pair from colinearity.
Date: January 1, 1978
Creator: Atkins, F.B.; Harper, P.V. & Beck, R.N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Analysis of small mammal populations inhabiting the environs of a low-level radioactive waste pond.

Description: This study was designed to determine the kinds of small mammals living adjacent to 216-U-10 Pond, the radiation exposures these mice received, and the level and type of radionuclides assimilated while living next to this pond and the 216-Z-19 Ditch. Four species of mice were trapped including the Great Basin pocket mouse, deer mouse, house mouse, and the western harvest mouse. Animals were collected throughout the study and composite tissue samples were analyzed by gamma spectrometry. Also, an … more
Date: March 1, 1979
Creator: Gano, K.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of soil samples from OMRE decommissioning project

Description: In order to establish that the present Organic Moderated Reactor Experiment (OMRE) site does not exceed the criteria for radioactive contamination, samples obtained from the remainder of the facility that was not removed such as soil, concrete pads, various structural materials, and the leach pond area were analyzed to determine their radioactive content. The results of the analyses performed on soil samples are presented. Results of this study indicate that the activity at the OMRE decommissio… more
Date: January 1, 1979
Creator: Simpson, O.D.; Chapin, J.A.; Hine, R.E.; Mandler, J.W.; Orme, M.P. & Soli, G.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Analytic and experimental decay heat determinations of 800-MeV proton irradiated aluminum

Description: Postirradiation radiochemistry analysis of 800-MeV proton irradiated ultrahigh purity aluminum has been done with standard gamma-ray counting equipment determining the Na/sup 22/ activity in the activated aluminum. Results are compared to predicted values obtained from CINDER, a general nuclide depletion and fission-product code. This program can be used easily to calculate the activity of materials under arbitrary irradiation, provided that the source terms for the various radionuclides produc… more
Date: October 1, 1981
Creator: Kmetyk, L. N. & Sommer, W. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Androgen receptor-based imaging agents for the prostate: Synthesis and tissue distribution studies with tritium and fluorine-18 labeled androgens

Description: No Description Available.
Date: January 1, 1990
Creator: Liu, A.; Carlson, K.E.; Katzenellenbogen, J.A. (Illinois Univ., Urbana, IL (United States). Dept. of Chemistry); VanBrocklin, H.F.; Mathias, C.J. & Welch, M.J. (Washington Univ., St. Louis, MO (United States). Edward Mallinckrodt Inst. of Radiology)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Angular Momentum Effects in Subbarrier Fusion

Description: Angular-momentum distributions sigma/sub L/ for the compound nucleus /sup 164/Yb were deduced from measurements of ..gamma..-ray multiplicity for all significant evaporation residues from fusion of /sup 64/Ni and /sup 100/Mo at and below the Coulomb barrier. The excitation functions can be reproduced with coupled-channels calculations only if additional coupling beyond the known inelastic strengths is included. Even with this augmented coupling, however, at the lowest bombarding energies the ex… more
Date: January 1, 1988
Creator: Halbert, M. L.; Beene, J. R.; Hensley, D. C.; Honkanen, K.; Semkow, T. M.; Abenante, V. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen