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8:1 thermal cavity problem

Description: We present results for the 8:1 thermal cavity problem using FIDAP on 3 meshes--each using 3 elements. A brief summary of related results is also included. This contribution comes via the rather versatile and general commercial finite element code, FIDAP. This code still offers the user a wide selection with respect to element choices, statement of governing equations, (e.g., advective form, divergence form) implicit time integrators (variable-step or fixed step, first-order or second-order), an… more
Date: October 11, 2000
Creator: Gresho, P M & Sutton, S
Item Type: Refine your search to only Article
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35 Years of Water Policy: The 1973 National Water Commission and Present Challenges

Description: This report presents the National Water Commission's (NWC) recommendations and analyzes how issues targeted by the recommendations have evolved during the intervening years. The report focuses on key federal-level recommendations, thereby targeting what has been accomplished since 1973, what issues remain unresolved, and what additional concerns have developed.
Date: May 11, 2009
Creator: Cody, Betsy A. & Carter, Nicole T.
Item Type: Refine your search to only Report
open access

45-Day safety screen results for Tank 241-C-101, auger sample 95-AUG-019

Description: One auger sample from Tank 241-C-101 was received by the 222-S Laboratory and underwent safety screening analyses--differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and total alpha analysis--in accordance with the tank characterization plan. Analytical results for the TGA on the crust sample (the uppermost portion of the auger sample) (sample number S95T000823) were less than the safety screening notification limit of 17 weight percent water. Verbal and written notifica… more
Date: May 11, 1995
Creator: Sasaki, L.M.
Item Type: Refine your search to only Report
open access

50 MW X-BAND RF SYSTEM FOR A PHOTOINJECTOR TEST STATION AT LLNL

Description: In support of X-band photoinjector development efforts at LLNL, a 50 MW test station is being constructed to investigate structure and photocathode optimization for future upgrades. A SLAC XL-4 klystron capable of generating 50 MW, 1.5 microsecond pulses will be the high power RF source for the system. Timing of the laser pulse on the photocathode with the applied RF field places very stringent requirements on phase jitter and drift. To achieve these requirements, the klystron will be powered b… more
Date: March 11, 2011
Creator: Marsh, R A; Anderson, S G; Barty, C J; Beer, G K; Cross, R R; Ebbers, C A et al.
Item Type: Refine your search to only Article
open access

81.114- University Reactor Infrastructure and Education Support / Prompt Gamma-ray Activation Analysis of Lithioum Ion Battery Cathodes

Description: This project focuses on the use of the Prompt Gamma-ray Activation Analysis (PGAA) technique available at the Nuclear Engineering Teaching Laboratory of the University of Texas at Austin to precisely determine the hydrogen (proton) contents in layered oxide cathode samples obtained by chemical lithium extraction in order to obtain a better understanding of the factors limiting the practical capacities and overall performance of lithium ion battery cathodes. The project takes careful precautiona… more
Date: November 11, 2006
Creator: Manthiram, Arumugam & Landsberger, S.
Item Type: Refine your search to only Report
open access

97-ERD-022 final report: Supernova on Nova

Description: This is the final year of the 3-year LDRD-ERD involving Lasers, D&NT, Physics, and ILSA to develope astrophysics experiments on intense lasers such as the Nova and Gekko lasers. During this 3 year period, we have developed a highly successful experiment probing the hydrodynamics of the explosion phase of core-collapse supernovae, which occurs during the first ~3 hours after core collapse. This was in collaboration with the Univ. of Arizona and CEA/Saclay. We also developed a very successful exp… more
Date: March 11, 1999
Creator: Remington, B. A.
Item Type: Refine your search to only Report
open access

100 Areas, January 1 through January 7, 1946

Description: During this period the B Pile operated at its assigned power level of 25 MW below rated level, except for 10 hours on January 5. The operating level of the D Pile remained at 25 MW below rating. The rate gain in excess reactivity during equilibrium operation has been about 1.8 inhours/day. On January 1, the power level of the F Pile was dropped to 25 MW below rating from its previous rated level. Rod A was in a favorable position to make a determination of the reactivity coefficients at the tim… more
Date: January 11, 1946
Creator: Jordan, W. E.
Item Type: Refine your search to only Report
open access

100 Areas technical activities report -- Physics, November 1946

Description: This report divides the activities for November into three sections: D Pile; F Pile; and general physics. During November the D Pile was down twice for regularly scheduled shutdowns. Two scram occurred during the month, both of short duration. Five Special Request 15 tubes were discharged and recharged with Special Request 15. Some 13 inhour of reactivity were gained during the month. Vertical rod thimbles, 10 through 22, were tested. A Production Test was performed to determine the reactivity … more
Date: December 11, 1946
Creator: Gast, P. F.
Item Type: Refine your search to only Report
open access

100 Areas water treatment specifications

Description: This memorandum discussed review of the data from tests using alum in the treatment of pile process water, and using activated silica as a coagulant aid during period of low water temperature, which shows that this method should be substituted for the present method of treating pile process water in all 100 Areas. It was recommended that the water treatment procedures and specifications attached to this memorandum be initiated as standard practice in all 100 Areas as soon as it is possible to m… more
Date: July 11, 1952
Creator: Greninger, A. B.
Item Type: Refine your search to only Report
open access

100-D Ponds groundwater quality assessment

Description: The 100-D Ponds facility is regulated under the Resource Conservation and Recovery Act of 1976. The pH of groundwater in a downgradient well is statistically different than local background, triggering an assessment of groundwater contamination under 40 CFR 265.93. Results of a similar assessment, conducted in 1993, show that the elevated pH is caused by the presence of alkaline ash sediments beneath the ponds, which are not part of the RCRA unit. The 100-D Ponds should remain in indicator eval… more
Date: April 11, 1996
Creator: Hartman, M. J.
Item Type: Refine your search to only Report
open access

100-keV Faraday cup design: materials and structure

Description: A Faraday cup design for a 1 mA.cm/sup -2/ 100-keV, light-ion-beam measurement in background plasma is proposed. Features of this shielded, three-grid structure with deep target are described, and a mechanical draft is included. In the appendix, we reference and survey results of experiments reporting the number and energy range of secondary electrons and back-scattered ions originating on various metal surfaces bombarded with approximately 100-keV hydrogen and deuterium ions. Choice of target … more
Date: October 11, 1976
Creator: Jones, K.
Item Type: Refine your search to only Report
open access

100-N Area Strontium-90 Treatability Demonstration Project: Phytoextraction Along the 100-N Columbia River Riparian Zone – Field Treatability Study

Description: Strontium-90 (90Sr) is present both in the aquifer near the river and in the vadose and riparian zones of the river’s shore at 100-NR-2. Phytoextraction of 90Sr is being considered as a potential remediation system along the riparian zone of the Columbia River. Phytoextraction would employ coyote willow (Salix exigua). Past studies have shown that willow roots share uptake mechanisms for Sr with Ca, a plant macronutrient as well as no discrimination between Sr and 90Sr. Willow 90Sr concentratio… more
Date: January 11, 2010
Creator: Fellows, Robert J.; Fruchter, Jonathan S.; Driver, Crystal J. & Ainsworth, Calvin C.
Item Type: Refine your search to only Report
open access

105-DR Large Sodium Fire Facility closure activities evaluation report

Description: This report evaluates the closure activities at the 105-DR Large Sodium Fire Facility. The evaluation compares these activities to the regulatory requirements and closure plan requirements. The report concludes that the areas identified in the closure plan can be clean closed. This report summarizes and evaluates the closure activities performed in support of partial closure of the 105-DR Large Sodium Fire Facility (LSFF). This evaluation will be used in assessing the condition of the 105-DR LS… more
Date: April 11, 1996
Creator: Adler, J. G.
Item Type: Refine your search to only Report
open access

S. 147/H.R. 309: Process for Federal Recognition of a Native Hawaiian Governmental Entity

Description: From Summary: "This report describes the provisions of the reported version of S. 147; outlines some federal statutes and recent cases which might be relevant to the issue of federal recognition of a Hawaiian entity; and recounts some legal arguments that have been presented in the debate on this legislation."
Date: October 11, 2005
Creator: Murphy, M. Maureen
Item Type: Refine your search to only Report
open access

200 Area stack contamination. Interim report, August 2, 1948--October 11, 1948

Description: In connection with the problem of eliminating contamination of the atmosphere by the exhaust from the 221 Building ventilation air stacks, sand filters were previously recommended. Construction of a sand filter in West Area is about completed and construction of a filter in East Area is well underway. This report summarizes the status, technical findings, and comments and suggestions since the writer`s last Interim Report, dated August 6, 1948, was issued.
Date: October 11, 1948
Creator: Lapple, C. E.
Item Type: Refine your search to only Report
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