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Characteristics of A-150 plastic-equivalent gas in A-150 plastic ionization chambers for p(66)Be(49) neutrons

Description: The evaluation of a gas mixture having an atomic composition similar to that of A-150 TE-plastic has been extended to a high energy neutron therapy beam. A-150 gas, air and methane-based TE gas were each flowed through A-150 plastic-walled ion chambers of different sizes and irradiated with p(66)Be(49) neutrons. A tentative value for anti W(A-150) of 27.3 +- 0.5 J C/sup -1/ was derived for this beam. The anti W value of the A-150 gas mixture is compared to those of methane-based TE gas and of a… more
Date: July 8, 1982
Creator: Awschalom, M.; Rosenberg, I.; Ten Haken, R. K.; Pearson, D. W.; Attix, F. H. & DeLuca, P. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

RADBALL TECHNOLOGY TESTING IN THE SAVANNAH RIVER SITE HEALTH PHYSICS INSTRUMENT CALIBRATION LABORATORY

Description: The United Kingdom's National Nuclear Laboratory (NNL) has developed a radiation-mapping device that can locate and quantify radioactive hazards within contaminated areas of the nuclear industry. The device, known as RadBall{trademark}, consists of a colander-like outer collimator that houses a radiation-sensitive polymer sphere. The collimator has over two hundred small holes; thus, specific areas of the polymer sphere are exposed to radiation becoming increasingly more opaque in proportion to… more
Date: July 8, 2010
Creator: Farfan, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radballtechnology Testing and MCNP Modeling of the Tungsten Collimator

Description: The United Kingdom's National Nuclear Laboratory (NNL) has developed a remote, non-electrical, radiation-mapping device known as RadBall{trademark}, which can locate and quantify radioactive hazards within contaminated areas of the nuclear industry. RadBall{trademark} consists of a colander-like outer shell that houses a radiation-sensitive polymer sphere. The outer shell works to collimate radiation sources and those areas of the polymer sphere that are exposed react, becoming increasingly mor… more
Date: July 8, 2010
Creator: Farfan, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Mathematical models and specific absorbed fractions of photon energy in the nonpregnant adult female and at the end of each trimester of pregnancy

Description: Mathematical phantoms representing the adult female at three, six, and nine months of gestation are described. They are modifications of the 15-year-old male/adult female phantom (15-AF phantom) of Cristy and Eckerman (1987). The model of uterine contents includes the fetus, fetal skeleton, and placenta. The model is suitable for dose calculations for the fetus as a whole; individual organs within the fetus (other than the skeleton) are not modeled. A new model for the nonpregnant adult female … more
Date: May 8, 1995
Creator: Stabin, M. G.; Watson, E. E.; Cristy, M.; Ryman, J. C.; Eckerman, K. F.; Davis, J. L. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Air Kerma Calibration Factors and kch Values for PTW Soft X-ray, NACP and Roos Ionization Chambers at Very Low X-ray Energies (0.035 mm - 1.0 mm Al HVL)

Description: Several national and international protocols have been established for the dosimetry of x-ray beams used in radiotherapy. For the very low energy x-rays (0.035mm-1.0 mm Al HVL) only two codes are available: the UK IPEMB Code of Practice and the German standard, DIN 6809 Part 4. The measurement of very low energy x-ray beams is normally performed with parallel plate ionization chambers calibrated at a standards laboratory and characterized by an air kerma calibration factor N{sub k}. According t… more
Date: July 8, 1999
Creator: Ipe, Nisy E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reactor Dosimetry Study of the Rhode Island Nuclear Science Center.

Description: The Rhode Island Nuclear Science Center (RINSC), located on the Narragansett Bay Campus of the University of Rhode Island, is a state-owned and US NRC-licensed nuclear facility constructed for educational and industrial applications. The main building of RINSC houses a two-megawatt (2 MW) thermal power critical reactor immersed in demineralized water within a shielded tank. As its original design in 1958 by the Rhode Island Atomic Energy Commission focused on the teaching and research use of th… more
Date: May 8, 2005
Creator: Holden, N. E.; Reciniello, R. N. & Hu, J. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Nuclear Data Evaluations and Recommendations

Description: The published scientific literature is scanned and periodically evaluated for neutron and non-neutron nuclear data and the resulting recommendations are published [1,2]. After the literature has been scanned and appropriate data collected, there are often problems with regard to the treatment of the various types of data during this evaluation process and with regard to the method by which the recommendations are drawn from the assessment of the collection of individual measurements. Some-probl… more
Date: May 8, 2005
Creator: Holden, N. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Radiation Dosimetry in the Bnct Patient Treatment Room at the Bmrr.

Description: The Medical Research Reactor at the Brookhaven National Laboratory (BMRR) was a heterogeneous, tank type, light water cooled and moderated, graphite reflected reactor, which was operated on demand at a power level up to 3 mega-watts (MW) for medical and biological research [1]. The reactor first went critical on March 15, 1959, with 17 fresh fuel elements (2.52 kg uranium-235 in a total of 2.7 kg uranium) in the center core. The BMRR had two treatment rooms on opposite sides of the core. It had… more
Date: May 8, 2005
Creator: Holden, N. E.; Reciniello, R. N. & Hu, J. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Electronics Personal Dosemeter (EPD-N) Test and Evaluation Report

Description: Three electronic personal dosimeters (EPD-N) manufactured by Siemens, serial numbers 0635, 0658, and 0683, were tested at the Radiation Calibration Laboratory for an evaluation of their response to neutron, gamma and x-ray radiation. Designed to provide real-time neutron and photon dosimetry, the EPD-N is capable of estimating and displaying neutron and gamma dose components separately for a range of energies from 50 keV to 7 MeV for photon and 0.025 eV to > 10 MeV for neutron. All tests wer… more
Date: April 8, 2003
Creator: Shourbaji, Ayman A.; Chiaro, Peter J. & Dixon, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preparing Oregon State University to Meet the Research Challenges of the Global Nuclear Energy Partnership Final Scientific/Technical Report

Description: The OSU Radiation Center requested $100,000 under the Global Nuclear Energy Partnership University Readiness program to provide for graduate student support, reactor equipment upgrades, and irradiation support. A portion of the funds requested were used to support the graduate education of a graduate student for a period of one year. The remaining funds were utilized to enhance the irradiation facilities of the Oregon State TRIGA® Reactor as well as to offset the costs of irradiations for initi… more
Date: October 8, 2008
Creator: Reese, Steven R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Managing routine bioassay requirements

Description: The Hanford Site is a very diverse Department of Energy (DOE) Nuclear Site in Eastern Washington State that includes: retired reactor facilities, spent fuel storage facilities, chemical separations facilities, laboratories, and plutonium separations facilities. As a result worker routine bioassays requirements may include routine whole body counting for mixed fission products, chest counting for uranium or plutonium, and/or urinalyses for plutonium, ura@u@ strontium-90, and tritium depending on… more
Date: October 8, 1997
Creator: Baumann, B. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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