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LCLS soft x-ray imager mirrors and their performance (open access)

LCLS soft x-ray imager mirrors and their performance

Soft X-ray imager mirrors have been designed, calibrated and fabricated at Lawrence Livermore National Laboratory and characterized at the Advanced Light Source for their performance between 200 and 1300 eV. The mirrors are coated with a multilayer coating consisting of 70 bilayers of W/ SiC. The mirrors are to reflect at 22.5 deg from grazing angle at 1.50 nm wavelength and the width of the reflectivity peak should be at least 1.3%. Also, the mirrors should be non-reflective elsewhere. Our multilayer design was optimized to satisfy these requirements. The coating is very challenging since the individual layer thicknesses need to be less than 1 nm thick and reproducibility from layer to layer is crucial. To minimize the second harmonic peak we designed a multilayer with {Gamma} = 0.5 (W and SiC layer thicknesses are the same). This way we end up with a mirror that has only the 1st and 3rd harmonic peak as shown in Figure 1. To suppress reflectivity outside the first peak we used our novel approach, an antireflective coating. Modeling predicted substantial reduction in reflectivity, especially for lower energies as shown in Figure 1. The experimental results of the soft x-ray imager mirror as measured at …
Date: October 19, 2007
Creator: Bajt, S
Object Type: Report
System: The UNT Digital Library
Perry Daily Journal (Perry, Okla.), Vol. 115, No. 202, Ed. 1 Friday, October 19, 2007 (open access)

Perry Daily Journal (Perry, Okla.), Vol. 115, No. 202, Ed. 1 Friday, October 19, 2007

Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date: October 19, 2007
Creator: Brown, Gloria
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 120, Ed. 1 Friday, October 19, 2007 (open access)

The Altus Times (Altus, Okla.), Vol. 109, No. 120, Ed. 1 Friday, October 19, 2007

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: October 19, 2007
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Boerne Star (Boerne, Tex.), Vol. 101, No. 84, Ed. 1 Friday, October 19, 2007 (open access)

The Boerne Star (Boerne, Tex.), Vol. 101, No. 84, Ed. 1 Friday, October 19, 2007

Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date: October 19, 2007
Creator: Cartwright, Brian
Object Type: Newspaper
System: The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 86, No. 323, Ed. 1 Friday, October 19, 2007 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 86, No. 323, Ed. 1 Friday, October 19, 2007

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: October 19, 2007
Creator: Clements, Clifford E.
Object Type: Newspaper
System: The Portal to Texas History
SCALE-UP OF CAUSTIC-SIDE SOLVENT EXTRACTION PROCESS FOR REMOVAL OF CESIUM AT SAVANNAH RIVER SITE (open access)

SCALE-UP OF CAUSTIC-SIDE SOLVENT EXTRACTION PROCESS FOR REMOVAL OF CESIUM AT SAVANNAH RIVER SITE

In 2004, the Department of Energy (DOE) directed Westinghouse Savannah River Company (WSRC) to develop a Caustic-Side Solvent Extraction (CSSX) process at the Savannah River Site (SRS) capable of removing cesium from 1 million gallons a year of dissolved salt solution. This facility would provide interim processing for cesium containing salt solution until the Salt Waste Processing Facility (SWPF) comes on-line. The DOE design inputs1 were to utilize contactors similar in design to those to be used in the SWPF, assume class C waste with less than 0.5 Ci/gal Cs-137, achieve a Decontamination Factor (DF) greater than 12, include the ability to clean the contactors in place, and assume an operating life of three years. WSRC embarked on a design, test, and build program to achieve these criteria as described in the following text. All DOE design criteria have been met or exceeded by WSRC.
Date: October 19, 2007
Creator: Geeting, M
Object Type: Article
System: The UNT Digital Library
South Texas Catholic (Corpus Christi, Tex.), Vol. 42, No. 20, Ed. 1 Friday, October 19, 2007 (open access)

South Texas Catholic (Corpus Christi, Tex.), Vol. 42, No. 20, Ed. 1 Friday, October 19, 2007

Semi-monthly newspaper from Corpus Christi, Texas published by the Diocese of Corpus Christi that includes news of interest to Diocese members along with advertising.
Date: October 19, 2007
Creator: Goldapp, Paula J.
Object Type: Newspaper
System: The Portal to Texas History
Performance of the correlation consistent composite approach for transition states: A comparison to G3B theory (open access)

Performance of the correlation consistent composite approach for transition states: A comparison to G3B theory

This article discusses performance of the correlation consistent composite approach for transition states.
Date: October 19, 2007
Creator: Grimes, Thomas V.; Wilson, Angela K.; DeYonker, Nathan J. & Cundari, Thomas R., 1964-
Object Type: Article
System: The UNT Digital Library
Final Technical Report (open access)

Final Technical Report

The Department of Energy’s Industrial Assessment Center at Colorado State University (CSU IAC) has been helping manufacturers in Colorado and the Rocky Mountain region save energy, reduce waste, and save money while helping to produce highly-trained and highly-capable energy engineers since 1984. The most recent four-year contract continues that trend. This contract ran from September 1, 2002 through May 31, 2007 and included assessments conducted from September 1, 2002 through August 31, 2006. During this contract, the CSU IAC served 77 manufacturers in six Rocky Mountain States and recommended about 311,800 MMBtu/yr in energy savings, 12.6 million gallons of waste water reduction per year, nearly 650,000 pounds of solid waste reduction per year, and more than 5,600 gallons of hazardous solid waste per year, saving more than $9.54 million dollars per year in utility, waste disposal, raw material, and labor costs. Total expenditures for the period were about $814,000 for the period or about $203,500 per year. Thus, the CSU IAC generated almost 12 times more recommended cost savings than the project cost. In addition, the program employed 24 undergraduate mechanical and civil engineering students and seven graduate mechanical engineering students. Of these students, more than 75% have gone on …
Date: October 19, 2007
Creator: Hittle, Douglas C. & Kostrzewa, Michael F.
Object Type: Report
System: The UNT Digital Library
Studies on Neutral Beam Injection into the SSPX Spheromak Plasma (open access)

Studies on Neutral Beam Injection into the SSPX Spheromak Plasma

In the Sustained Spheromak Physics Experiment, (SSPX) ['Improved operation of the SSPX spheromak', R.D. Wood, D.N. Hill, E.B. Hooper, S. Woodruff1, H.S. McLean and B.W. Stallard, Nucl. Fusion 45 1582-1588 (2005)], plasmas with core electron temperatures reaching up to 500 eV at densities of 10{sup 20}/m{sup 3} have been sustained for several milliseconds, making them suitable as targets for neutral beam injection. High performance and further progress in understanding Spheromak plasma physics are expected if neutral beams are injected into the plasma. This paper presents the results of numerical 1.5 D modeling of the plasma to calculate neutral beam current drive and ion and electron heating. The results are presented for varying initial conditions of density, temperatures and profiles and beam energy, injection angle and power. Current drive efficiency (Ampere/Watt of absorbed power) of up to 0.08 can be achieved with best performance SSPX shots as target. Analyses of neutral beam heating indicate that ion temperatures of up to 1.5 keV and electron temperatures of up to 750 eV can be obtained with injection of about 1 MW of neutral beam for 5-10 ms and with diffusivities typically observed in SSPX. Injection targeting near the magnetic axis appears to be …
Date: October 19, 2007
Creator: Jayakumar, R; Pearlstein, L D; Casper, T A; Fowler, T K; Hill, D N; Hudson, B et al.
Object Type: Report
System: The UNT Digital Library
The GV Tribune (Grandview, Tex.), Vol. 112, No. 41, Ed. 1 Friday, October 19, 2007 (open access)

The GV Tribune (Grandview, Tex.), Vol. 112, No. 41, Ed. 1 Friday, October 19, 2007

Weekly newspaper from Grandview, Texas that includes local, state, and national news along with advertising.
Date: October 19, 2007
Creator: Knowles, Rexann
Object Type: Newspaper
System: The Portal to Texas History
High Energy Density Science at the Linac Coherent Light Source (open access)

High Energy Density Science at the Linac Coherent Light Source

High energy density science (HEDS), as a discipline that has developed in the United States from National Nuclear Security Agency (NNSA)-sponsored laboratory research programs, is, and will remain, a major component of the NNSA science and technology strategy. Its scientific borders are not restricted to NNSA. 'Frontiers in High Energy Density Physics: The X-Games of Contemporary Science' identified numerous exciting scientific opportunities in this field, while pointing to the need for a overarching interagency plan for its evolution. Meanwhile, construction of the first x-ray free-electron laser, the Office-of-Science-funded Linear Coherent Light Source-LCLS: the world's first free electron x-ray laser, with 100-fsec time resolution, tunable x-ray energies, a high rep rate, and a 10 order-of-magnitude increase in brightness over any other x-ray source--led to the realization that the scientific needs of NNSA and the broader scientific community could be well served by an LCLS HEDS endstation employing both short-pulse and high-energy optical lasers. Development of this concept has been well received in the community. NNSA requested a workshop on the applicability of LCLS to its needs. 'High Energy Density Science at the LCLS: NNSA Defense Programs Mission Need' was held in December 2006. The workshop provided strong support for the relevance …
Date: October 19, 2007
Creator: Lee, R W
Object Type: Report
System: The UNT Digital Library
Current Economic Conditions and Selected Forecasts (open access)

Current Economic Conditions and Selected Forecasts

U.S. real GDP growth has been positive for 23 consecutive quarters, and the economy is considered to be in an "expansion" phase. As of the second quarter of 2007, real or inflation-adjusted growth was some 16% above its previous high near the end of the 1991-2001 expansion. This report contains information on current economic conditions, the posture of fiscal and monetary policy, economic forecasts, and related information.
Date: October 19, 2007
Creator: Makinen, Gail E.
Object Type: Report
System: The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 92, No. 294, Ed. 1 Friday, October 19, 2007 (open access)

Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 92, No. 294, Ed. 1 Friday, October 19, 2007

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date: October 19, 2007
Creator: Mattox, Jami
Object Type: Newspaper
System: The Gateway to Oklahoma History
Clean Air Issues in the 110th Congress: Climate Change, Air Quality Standards, and Oversight (open access)

Clean Air Issues in the 110th Congress: Climate Change, Air Quality Standards, and Oversight

This report provides a brief overview of the climate change issue as well as other Clean Air Act issues the 110th Congress may consider.
Date: October 19, 2007
Creator: McCarthy, James E.
Object Type: Report
System: The UNT Digital Library
A Primer on the Higher Education Act (HEA) (open access)

A Primer on the Higher Education Act (HEA)

None
Date: October 19, 2007
Creator: Mercer, Charmaine & Skinner, Rebecca R.
Object Type: Report
System: The UNT Digital Library
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 52, No. 3, Ed. 1 Friday, October 19, 2007 (open access)

Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 52, No. 3, Ed. 1 Friday, October 19, 2007

Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date: October 19, 2007
Creator: Morrell, Donna
Object Type: Newspaper
System: The Portal to Texas History
Dallas Voice (Dallas, Tex.), Vol. 24, No. 22, Ed. 1 Friday, October 19, 2007 (open access)

Dallas Voice (Dallas, Tex.), Vol. 24, No. 22, Ed. 1 Friday, October 19, 2007

Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date: October 19, 2007
Creator: Nash, Tammye
Object Type: Newspaper
System: The UNT Digital Library
TYPE AF CERTIFICATE FOR TRANSPORTATION OF LOW ENRICHED URANIUM OXIDE (LEUO) FOR DISPOSAL (open access)

TYPE AF CERTIFICATE FOR TRANSPORTATION OF LOW ENRICHED URANIUM OXIDE (LEUO) FOR DISPOSAL

Washington Savannah River Company (WSRC) operates the Savannah River Site (SRS) in Aiken, SC under contract with the U.S. Department of Energy (DOE). SRS had the need to ship 227 drums of low enriched uranium oxide (LEUO) to a disposal site. The LEUO had been packaged nearly 25 years ago in U.S. Department of Transportation (DOT) 17C 55-gallon drums and stored in a warehouse. Since the 235U enrichment was just above 1 percent by weight (wt%) the material did not qualify for the fissile material exceptions in 49 CFR 173.453, and therefore was categorized as 'fissile material' for shipping purposes. WSRC evaluated all existing Type AF packages and did not identify any feasible packaging. Applying for a new Type AF certificate of compliance was considered too costly for a one-time/one-way shipment for disposal. Down-blending the material with depleted uranium (to reduce enrichment below 1 wt% and enable shipment as low specific activity (LSA) radioactive material) was considered, but appropriate blending facilities do not exist at SRS. After reviewing all options, WSRC concluded that seeking a DOT Special Permit was the best option to enable shipment of the material for permanent disposal. WSRC submitted the Special Permit application to the DOT, …
Date: October 19, 2007
Creator: Opperman, E & Kenneth Yates, K
Object Type: Article
System: The UNT Digital Library
The Ranger (San Antonio, Tex.), Vol. 82, No. 6, Ed. 1 Friday, October 19, 2007 (open access)

The Ranger (San Antonio, Tex.), Vol. 82, No. 6, Ed. 1 Friday, October 19, 2007

Weekly student newspaper from San Antonio College in San Antonio, Texas that includes campus news along with advertising.
Date: October 19, 2007
Creator: San Antonio College
Object Type: Newspaper
System: The Portal to Texas History
CP-Violation in B to S Penguin Decays at BaBar (open access)

CP-Violation in B to S Penguin Decays at BaBar

We present the new and updated BABAR measurements of CP-violation studies for many b{yields}s penguin decay modes. We report the first observation of mixing-induced CP-violation in B{sup 0}{yields}{eta}{prime}K{sup 0} with a significance (including systematic uncertainties) of 5.5{sigma}. We also present the first observation of the decay B{sup 0} {yields} {rho}{sup 0}K{sup 0}. Using the time-dependent Dalitz plot analysis of B{sup 0} {yields} K{sup +}K{sup -}K{sup 0} decay, the CP-parameters A{sub CP} and {beta}{sub eff} are measured with 4.8{sigma} significance, and we reject the solution near {pi}/2 -- {beta}{sub eff} at 4.5 {sigma}. We also present the update measurements of CP-violating parameters for B{sup 0} {yields} K{sup 0}{sub S}{pi}{sup 0}, K{sup 0}{sub S}K{sup 0}{sub S}K{sup 0}{sub S} and {pi}{sup 0}{pi}{sup 0}K{sup 0}{sub S} decays. An updated measurements of the CP-violating charge asymmetries for B{sup {+-}} {yields} {eta}{prime}K{sup {+-}}, {eta}K{sup {+-}} {omega}{eta}K{sup {+-}} decays are also presented. The measurements are based on the data sample recorded at the {Upsilon}(4S) resonance with BABAR detector at the PEP-II B-meson Factory at SLAC.
Date: October 19, 2007
Creator: Soni, Nitesh & U., /Birmingham
Object Type: Article
System: The UNT Digital Library
Texas Register, Volume 32, Number 42, Pages 7355-7552, October 19, 2007 (open access)

Texas Register, Volume 32, Number 42, Pages 7355-7552, October 19, 2007

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: October 19, 2007
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Assigning Air Traffic Control Costs to Users: Elements of FAA's Methodology Are Generally Consistent with Standards but Certain Assumptions and Methods Need Additional Support (open access)

Assigning Air Traffic Control Costs to Users: Elements of FAA's Methodology Are Generally Consistent with Standards but Certain Assumptions and Methods Need Additional Support

A letter report issued by the Government Accountability Office with an abstract that begins "In January 2007 Federal Aviation Administration (FAA) reported the results of its study that assigned the fiscal year 2005 costs of its Air Traffic Organization (ATO) to users. FAA used this study to support the President's proposal to replace many current excise taxes with cost-based fees for commercial aviation users and higher fuel taxes for general aviation users. GAO assessed (1) the consistency of FAA's cost assignment methodology with established standards and guidance, (2) the support for selected cost assignment assumptions and methods, and (3) the impact of including budgeted capital costs in the cost baseline. GAO compared FAA's methodology to federal accounting standards and international guidance, reviewed available documents and analyses supporting FAA's assumptions and methods, and interviewed FAA officials and consultants."
Date: October 19, 2007
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Commodity Futures Trading Commission: Trends in Energy Derivatives Markets Raise Questions about CFTC's Oversight (open access)

Commodity Futures Trading Commission: Trends in Energy Derivatives Markets Raise Questions about CFTC's Oversight

A letter report issued by the Government Accountability Office with an abstract that begins "Prices for four energy commodities--crude oil, heating oil, unleaded gasoline, and natural gas--have risen substantially since 2002. Some observers believe that higher energy prices are the result of changes in supply and demand. Others believe that increased futures trading activity has also contributed to higher prices. This report, conducted under the Comptroller General of the United States' authority, examines (1) trends and patterns in the physical and energy derivatives markets, (2) the scope of the Commodity Futures Trading Commission's (CFTC) regulatory authority over these markets, and (3) the effectiveness of CFTC's monitoring and detection of market abuses and enforcement. For this work, GAO analyzed futures and large trader data and interviewed market participants, experts, and officials at six federal agencies."
Date: October 19, 2007
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library