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Spent Nuclear Fuel (SNF) Project Cask and MCO Helium Purge System Design Review Completion Report Project A.5 and A.6

Description: This report documents the results of the design verification performed on the Cask and Multiple Canister Over-pack (MCO) Helium Purge System. The helium purge system is part of the Spent Nuclear Fuel (SNF) Project Cask Loadout System (CLS) at 100K area. The design verification employed the ''Independent Review Method'' in accordance with Administrative Procedure (AP) EN-6-027-01.
Date: April 19, 2000
Creator: ARD, K.E.
Partner: UNT Libraries Government Documents Department
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TCT hybrid preconceptual blanket design studies

Description: The conceptual design of a tokamak fusion-fission (hybrid) reactor, which produces electric power and fissile material, has been performed in a cooperative effort between Princeton's Plasma Physics Laboratory (PPPL) and Battelle's Pacific Northwest Laboratories (PNL). PPPL, who had overall project lead responsibility, designed the fusion driver system. Its core consists of a tokamak plasma maintained in the two-component torus (TCT) mode by both D and T beams and having a single null poloidal d… more
Date: January 1, 1978
Creator: Aase, D. T.; Bampton, M. C. C.; Doherty, T. J.; Leonard, B. R.; McCann, R. A.; Newman, D. F. et al.
Partner: UNT Libraries Government Documents Department
open access

Review of ORNL-TSF shielding experiments for the gas-cooled Fast Breeder Reactor Program

Description: During the period between 1975 and 1980 a series of experiments was performed at the ORNL Tower Shielding Facility in support of the shield design for a 300-MW(e) Gas Cooled Fast Breeder Demonstration Plant. This report reviews the experiments and calculations, which included studies of: (1) neutron streaming in the helium coolant passageways in the GCFR core; (2) the effectiveness of the shield designed to protect the reactor grid plate from radiation damage; (3) the adequacy of the radial shi… more
Date: January 1, 1982
Creator: Abbott, L. S.; Ingersoll, D. T.; Muckenthaler, F. J. & Slater, C. O.
Partner: UNT Libraries Government Documents Department
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Choice of Coolant in Commercial Tokamak Power Plants

Description: The STARFIRE design study focused on solid tritium breeder blankets in order to minimize the stored chemical energy. The most suitable coolant candidates with solid tritium breeders are water and helium. This paper presents the results of a comparative study of the two coolants. The study shows clear advantages for the choice of pressurized water for the conditions of the STARFIRE tokamak power plant design. The study also identifies those areas where development is required in order to utilize… more
Date: January 1, 1980
Creator: Abdou, M. A. & Graumann, D.
Partner: UNT Libraries Government Documents Department
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MACK-IV, a new version of MACK: a program to calculate nuclear response functions from data in ENDF/B format

Description: MACK-IV calculates nuclear response functions important to the neutronics analysis of nuclear and fusion systems. A central part of the code deals with the calculation of the nuclear response function for nuclear heating more commonly known as the kerma factor. Pointwise and multigroup neutron kerma factors, individual reactions, helium, hydrogen, and tritium production response functions are calculated from any basic nuclear data library in ENDF/B format. The program processes all reactions in… more
Date: July 1, 1978
Creator: Abdou, M. A.; Gohar, Y. & Wright, R. Q.
Partner: UNT Libraries Government Documents Department
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Elucidation of fundamental properties of helium in metals by nuclear magnetic resonance techniques

Description: The nuclear magnetic resonance (NMR) properties of very high density {sup 3}He in metals are discussed in the context of the corresponding properties in relatively high density bulk {sup 3}He. In particular, the effects of the {sup 3}He diffusion on the contribution of the {sup 3}He-{sup 3}He dipolar interaction to the lineshape and to the spin-lattice relaxation parameter (T{sub 1}) are described. It is shown that the temperature dependence of the lineshape and of T{sub 1} are independent sour… more
Date: January 1, 1990
Creator: Abell, G.C.
Partner: UNT Libraries Government Documents Department
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Cryogenic systems for the HEB accelerator of the Superconducting Super Collider

Description: This report discusses the following topics related to the Superconducting Super Collider: Cryogenic system -- general requirements; cryogenic system components; heat load budgets and refrigeration plant capacities; flow and thermal characteristics; process descriptions; cryogenic control instrumentation and value engineering trade-offs.
Date: July 1, 1994
Creator: Abramovich, S. & Yuecel, A.
Partner: UNT Libraries Government Documents Department
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Thermal Decomposition of Radiation-Damaged Polystyrene

Description: The radiation-damaged polystyrene (given the identification name of 'polycube') was fabricated by mixing high-density polystyrene material ("Dylene Fines # 100") with plutonium and uranium oxides. The polycubes were used in the 1960s for criticality studies during processing of spent nuclear fuel. The polycubes have since been stored for almost 40 years at the Hanford Plutonium Finishing Plant (PFP) after failure of two processes to reclaim the plutonium and uranium oxides from the polystyrene … more
Date: September 26, 2000
Creator: Abrefah, John & Klinger, George S.
Partner: UNT Libraries Government Documents Department
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Tritium distribution in the MHTGR

Description: The {sup 3}H production, transport and environmental release from the 350 MW(t) Modular High Temperature Gas Cooled Reactor was analyzed. The analysis was performed using a modified TRITGO computer code, plant data base from the Preliminary Safety Information Document and materials property data from the Fuel Design Data Manual, Issue F. The analysis indicates that most of the {sup 3}H produced in the reactor is retained by the fuel particles and the structural graphite elements. The single lar… more
Date: May 1, 1988
Creator: Acharya, R.
Partner: UNT Libraries Government Documents Department
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Oxidation of 316 stainless steel and other alloys in prototypic GCFR environments

Description: The oxidation behavior of type 316 stainless steel and candidate advanced alloys for the gas-cooled fast reactor (GCFR) is being investigated at General Atomic Company. The test program consists of oxidation tests in prototypic GCFR environments. Two tests have been completed to date and a third test is under way. The first test was performed in an environment containing a hydrogen/water ratio of 10. The oxidation behavior of all the alloys was good to excellent in this environment. Preferentia… more
Date: May 1, 1980
Creator: Acharya, R.T.
Partner: UNT Libraries Government Documents Department
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Gas-cooled fast breeder reactor steady-state irradiation testing program

Description: The requirements for the gas-cooled fast breeder reactor irradiation program are specified, and an irradiation program plan which satisfies these requirements is presented. The irradiation program plan consists of three parts and includes a schedule and a preliminary cost estimate: (1) a steady-state irradiation program, (2) irradiations in support of the design basis transient test program, and (3) irradiations in support of the GRIST-2 safety test program. Data from the liquid metal fast bree… more
Date: August 1, 1980
Creator: Acharya, R.T.; Campana, R.J. & Langer, S.
Partner: UNT Libraries Government Documents Department
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`HERON` as a Dark Matter Detector?

Description: ``{bold HERON}``, which is the acronym for `` {bold He}lium: {bold Ro}ton detection of {bold N}eutrinos``, is a project whose principal goal is a next generation detector of solar neutrinos from the p-p and {sup 7}Be branches. It will utilize superfluid helium as the target material and employ event energy transport out of the target by phonon and roton processes unique to helium. Many of the challenges presented for dark matter detection are very similar to those for low energy solar neutrinos… more
Date: October 1, 1996
Creator: Adams, J. S.; Bandler, S. R.; Brouer, S. M.; Enss, C.; Lanou, R. E.; Maris, H. J. et al.
Partner: UNT Libraries Government Documents Department
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The Transfer of Plutonium Hexafluoride in the Vapor Phase

Description: Plutonium hexafluoride is decomposed by heat, by its alpha radiation, and by reactions with most materials of construction. Laboratory experiments were performed to investigate means by which plutonium losses due to these reactions can be minimized during vapor-phase transfers of the compound. The experiments showed that plutonium hexafluoride vapor could be transferred satisfactorily through well fluorinated nickel equipment in a stream of fluorine or helium. The decomposition product of pluto… more
Date: October 1, 1957
Creator: Adams, M. D.; Steunenberg, R. K. & Vogel, R. C.
Partner: UNT Libraries Government Documents Department
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Outline of proram for testing air-supplied face masks used in P-10 atmospheres

Description: This report consists of an outline for a program for testing the air-supplied face masks currently being used as protection against P-10 atmospheres at HAPO. The test procedures which follow are intended to determine circumstances under which the mask ceases to offer protection to the wearer. To keep the scope of the test program to a minimum and also to facilitate interpretation of the findings in the light of P-10 atmospheres, the test conditions chosen were those which would be most unfavora… more
Date: September 11, 1950
Creator: Adley, F. E.
Partner: UNT Libraries Government Documents Department
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Advanced Fuel Cycle Initiative AFC-1D, AFC-1G and AFC-1H End of FY-06 Irradiation Report

Description: The U. S. Advanced Fuel Cycle Initiative (AFCI) seeks to develop and demonstrate the technologies needed to transmute the long-lived transuranic actinide isotopes contained in spent nuclear fuel into shorter-lived fission products, thereby dramatically decreasing the volume of material requiring disposition and the long-term radiotoxity and heat load of high-level waste sent to a geologic repository. The AFC-1 irradiation experiments on transmutation fuels are expected to provide irradiation pe… more
Date: September 1, 2006
Creator: Advanced Fuel Cycle Initiative AFC-1D, AFC-1G and
Partner: UNT Libraries Government Documents Department
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Effects of He{sup +} ion implantation on optical and structural properties of MgAl{sub 2}O{sub 4}

Description: Single crystals of magnesium-aluminate spinel were implanted with 170 keV He{sup +} ions to fluences ranging from 1 x 10{sup 16}--1 x 10{sup 21} ions/m{sup 2} at 120 K. The effects of ion implantation were studied using optical absorption spectroscopy, Rutherford Backscattering Spectroscopy and Ion Channeling (RBS/C) and Transmission Electron Microscopy (TEM). In absorption spectra obtained from the implanted samples, growth of an F-center band at 5.3 eV was observed. At the fluence of 3 x 10{s… more
Date: May 25, 1999
Creator: Afanasyev-Charkin, I. V.; Cooke, D. W.; Gritsyna, V. T.; Ishimaru, M. & Sickafus, K. E.
Partner: UNT Libraries Government Documents Department
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Tunnel nitrogen spill experiment

Description: The Energy Saver Safety Analysis Report (SAR) found the tunnel oxygen deficiency considerations emphasized helium spills. These reports concluded the helium quickly warms and because of its low denisty, rises to the apex of the tunnel. The oxygen content below the apex and in all but the immediate vicinity of the helium spill is essentially unchanged and guarantees an undisturbed source of oxygen especially important to fallen personnel. In contrast nitrogen spills warm slower than helium due t… more
Date: August 18, 1983
Creator: Ageyev, A. I.; Alferov, V. N. & Mulholland, G. T.
Partner: UNT Libraries Government Documents Department
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A search for strong-field direct two electron ionization using coincidence spectroscopy

Description: We report on our program in detecting two-electron ionization using electron-electron and electron-ion coincidence measurements. The coincidence techniques have been applied to the multiphoton ionization (MPI) of xenon atoms with 0.527 [mu]m excitation. The results show that direct two electron ionization is not occurring which is in variance with an earlier report. We also present a polarization study on the MPI of helium at 0.62 [mu]m and discuss these results in context of existing models.
Date: January 1, 1993
Creator: Agostini, P.; Mevel, E.; Breger, P.; Walker, B.; Yang, B. & DiMauro, L. F.
Partner: UNT Libraries Government Documents Department
open access

A search for strong-field direct two electron ionization using coincidence spectroscopy

Description: We report on our program in detecting two-electron ionization using electron-electron and electron-ion coincidence measurements. The coincidence techniques have been applied to the multiphoton ionization (MPI) of xenon atoms with 0.527 {mu}m excitation. The results show that direct two electron ionization is not occurring which is in variance with an earlier report. We also present a polarization study on the MPI of helium at 0.62 {mu}m and discuss these results in context of existing models.
Date: May 1, 1993
Creator: Agostini, P.; Mevel, E.; Breger, P.; Walker, B.; Yang, B. & DiMauro, L. F.
Partner: UNT Libraries Government Documents Department
open access

Study of the high-j states in {sup 249}Cm.

Description: The authors have performed the reaction {sup 248}Cm({sup 4}He, {sup 3}He) using 98.5-MeV alpha particles from the IUCF cyclotron to populate high-j states in {sup 249}Cm. A tentative assignment of the K{sub 17/2} component of the 1/2{sup +}[880] Nilsson state has been made.
Date: July 16, 1998
Creator: Ahmad, I.
Partner: UNT Libraries Government Documents Department
open access

A micromachined surface acoustic wave sensor for detecting inert gases

Description: Surface acoustic wave (SAW) sensors must be specifically designed for each application because many variables directly affect the acoustic wave velocity. In the present work, the authors have designed, fabricated, and tested an SAW sensor for detection of metastable states of He. The sensor consists of two sets of micromachined interdigitated transducers (IDTs) and delay lines fabricated by photolithography on a single Y-cut LiNbO{sub 3} substrate oriented for Z-propagation of the SAWs. One set… more
Date: December 31, 1996
Creator: Ahuja, S.; Hersam, M.; Ross, C.; Chien, H. T. & Raptis, A. C.
Partner: UNT Libraries Government Documents Department
open access

Parameter optimization of a microfabricated surface acoustic wave sensor for inert gas detection

Description: This work is related to designing, fabricating, and testing a surface acoustic wave sensor to be used for detecting metastable inert gases, particularly helium. The assembly consists of two microsensor configurations: (a) a reference device with no deposition at the delay line and (b) a sensing device with an Au-activated TiO{sub 2} e-beam-deposited thin film on the delay line. The interdigitated transducers and delay lines are fabricated by photolithography techniques on a single Y-cut LiNbO{s… more
Date: December 31, 1996
Creator: Ahuja, S.; Ross, C.; Chien, H. T. & Raptis, A. C.
Partner: UNT Libraries Government Documents Department
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