We have measured the energy deposited in two types of composite targets by a number of charged-particle beams: targets made of /sup 238/U, Lucite, and polyethylene were exposed to 0.26-GeV protons and 0.33-GeV deuterons, and aluminum-Lucite composites were exposed to 0.5-GeV electrons. In addition, we measured neutrons and gamma rays emitted from solid targets of various materials (including /sup 238/U and iron) exposed to 0.26-GeV protons and 0.33-GeV deuterons. We used passive detectors (thermoluminescence dosimeters, Lexan fission track recorders, and photographic emulsions) to measure the nonfission dose and the fission-fragment dose from the primary beam and its shower of products. Measurements were made at various depths and radial positions in the targets. Plots and numerical values of the measured doses are presented. The emission of neutrons and gamma rays was measured with a liquid-deuterated-benzene detector. In general, the dose profile with depth is similar for 0.26-GeV protons and 0.33-GeV deuterons. The ratio of return neutrons to gamma rays increases with increasing target mass number. Deuterons, however, produce from 1.7 to 5.8 times as many neutrons and gamma rays per particle as do protons.

This report has been prepared specifically for ultrasonic transducer users within the Nondestructive Testing Evaluation (NDE) community of the weapons complex. The purpose of the report is to establish an initial set of uniform procedures for measuring and recording transducer performance data, and to establish a common foundation on which more comprehensive transducer performance evaluations may be added as future transducer performance criteria expands. Transducer parameters and the problems with measuring them are discussed and procedures for measuring transducer performance are recommended with special precautionary notes regarding critical aspects of each measurement. An important consideration regarding the recommended procedures is the cost of implementation. There are two distinct needs for transducer performance characterization in the complex. Production oriented users need a quick, reliable means to check a transducer to ascertain its suitability for continued service. Development groups and the Transducer Center need a comprehensive characterization means to collect adequate data to evaluate theoretical concepts or to build exact replacement transducers. The instrumentation, equipment, and procedures recommended for monitoring production transducers are utilitarian and provide only that information needed to determine transducer condition.

The interaction of energetic electrons with highly charged ions is of great importance to several research fields such as astrophysics, laser fusion and magnetic fusion. In spite of this importance there are almost no measurements of electron interaction cross sections for ions more than a few times ionized. To address this problem an electron beam ion trap (EBIT) is being developed at LLNL. The device is essentially an EBIS except that it is not intended as a source of extracted ions. Instead the (variable energy) electron beam interacting with the confined ions will be used to obtain measurements of ionization cross sections, dielectronic recombination cross sections, radiative recombination cross sections, energy levels and oscillator strengths. Charge-exchange recombinaion cross sections with neutral gasses could also be measured. The goal is to produce and study elements in many different charge states up to He-like xenon and Ne-like uranium. 5 refs., 2 figs.

Report that provides background information and potential issues for Congress on the Littoral Combat Ship (LCS).

This report discusses the current political state of Iran and its relationship with the United States. This report emphasizes in particular the Iranian presidential elections that took place on June 12, 2009; current U.S. efforts under President Obama to forge diplomatic talks with Iran while at the same time urging aggressive action in the way of certain economic and trade sanctions; and how current U.S. efforts under the Obama Administration differ and/or are similar to efforts under the Bush Administration.

A letter report issued by the Government Accountability Office with an abstract that begins "Since 2000, the U.S. government has provided a total of $3.3 billion to Colombia, making it the fifth largest recipient of U.S. assistance. Part of this funding has gone toward nonmilitary assistance to Colombia, including programs to (1) promote legitimate economic alternatives to coca and opium poppy; (2) assist Colombia's vulnerable groups, particularly internally displaced persons; and (3) strengthen the country's democratic, legal, and security institutional capabilities. GAO examined these programs' objectives, reported accomplishments, and identified the factors, if any, that limit project implementation and sustainability. We also examined the challenges faced by Colombia and the United States in continuing to support these programs."

A letter report issued by the Government Accountability Office with an abstract that begins "Each year, about 2.5 million people file claims with the Social Security Administration (SSA) for disability benefits. If the claim is denied at the initial level, the claimant may appeal to the hearings level. The hearings level has allowed more than half of all appealed claims, an allowance rate that has raised concerns about the consistency of decisions made at the two levels. To help ensure consistency, SSA began a "process unification" initiative in 1994 and recently announced a new proposal to strengthen its disability programs. This report examines (1) the status of SSA's process unification initiative, (2) SSA's assessments of possible inconsistencies in decisions between adjudication levels, and (3) whether SSA's new proposal incorporates changes to improve consistency in decisions between adjudication levels."

A letter report issued by the Government Accountability Office with an abstract that begins "In its role as the nation's tax collector, the Internal Revenue Service (IRS) has a demanding responsibility in annually collecting trillions of dollars in taxes, processing hundreds of millions of tax and information returns, and enforcing the nation's tax laws. Since its first audit of IRS's financial statements in fiscal year 1992, GAO has identified a number of weaknesses in IRS's financial management operations. In related reports, GAO has recommended corrective action to address those weaknesses. Each year, as part of the annual audit of IRS's financial statements, GAO not only makes recommendations to address any new weaknesses identified but also follows up on the status of weaknesses GAO identified in previous years' audits. The purpose of this report is to (1) assist IRS management in tracking the status of audit recommendations and actions needed to fully address them and (2) demonstrate how the recommendations relate to control activities central to IRS's mission and goals."

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) expects the cost to develop and procure the major weapon systems in its current portfolio to total $1.6 trillion. With increased competition for funding within DOD and across the federal government, effectively managing these acquisitions is critical. Yet DOD programs too often experience poor outcomes--like increased costs and delayed fielding of needed capabilities to the warfighter. In 2006, this Committee mandated that GAO report on DOD's processes for identifying needs and allocating resources for its weapon system programs. In 2007, GAO reported that DOD consistently commits to more programs than it can support. This follow-on report assesses DOD's funding approach, identifies key factors that influence the effectiveness of this approach, and identifies practices that could help improve DOD's approach. To conduct its work, GAO assessed 20 major weapon programs in DOD's current portfolio--5 in detail--and reviewed relevant DOD policy and guidance, prior GAO work, and other relevant literature. GAO also reviewed the practices of selected successful companies."

A letter report issued by the Government Accountability Office with an abstract that begins "Decontaminating and decommissioning the nation's uranium enrichment plants, which are contaminated with hazardous materials, will cost billions of dollars and could span decades. In 1992, the Energy Policy Act created the Uranium Enrichment Decontamination and Decommissioning Fund (Fund) to pay for the plants' cleanup and to reimburse licensees of active uranium and thorium processing sites for part of their cleanup costs. This report discusses (1) what DOE has done to reduce the cleanup costs authorized by the Fund, and (2) the extent to which the Fund is sufficient to cover authorized activities."

A letter report issued by the General Accounting Office with an abstract that begins "The Comptroller General convened a forum in September 2002 to identify useful practices and lessons learned from major private and public sector mergers, acquisitions, and organizational transformations. This was done to help federal agencies implement successful transformations of their cultures, as well as the new Department of Homeland Security merge its various originating components into a unified department. There was general agreement on a number of key practices found at the center of successful mergers, acquisitions, and transformations. In this report, we identify the specific implementation steps for the key practices raised at the forum with illustrative private and public sector examples. To identify these implementation steps and examples, we relied primarily on interviews with selected forum participants and other experts about their experiences implementing mergers, acquisitions, and transformations and also conducted a literature review."

A letter report issued by the Government Accountability Office with an abstract that begins "Recent foreign-based intrusions on the computer systems of U.S. federal agencies and commercial companies highlight the vulnerabilities of the interconnected networks that comprise the Internet, as well as the need to adequately address the global security and governance of cyberspace. Federal law and policy give a number of federal entities responsibilities for representing U.S. cyberspace interests abroad, in collaboration with the private sector. More recently, the President appointed a national Cybersecurity Coordinator charged with improving the nation's cybersecurity leadership. GAO was asked to identify (1) significant entities and efforts addressing global cyberspace security and governance issues, (2) U.S. entities responsible for addressing these issues and the extent of their involvement at the international level, and (3) challenges to effective U.S. involvement in global cyberspace security and governance efforts. To do this, GAO analyzed policies, reports, and other documents and interviewed U.S. government and international officials and experts from over 30 organizations."

A letter report issued by the General Accounting Office with an abstract that begins "The Department of Veterans Affairs (VA) provides graduate medical education (GME) to as many as one-third of U.S. resident physicians, but oversight responsibilities spread across VA's organizational components and multiple affiliated hospitals and medical schools could allow supervision problems to go undetected or uncorrected. GAO was asked to examine VA's procedures for (1) monitoring VA medical centers' adherence to VA's requirements for resident supervision, (2) using evaluations of supervision by GME accrediting bodies and residents, and (3) using information about resident supervision drawn from VA's programs for monitoring the quality and outcomes of patient care."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed states' efforts to reduce participation in the Food Stamp Program, focusing on: (1) the reasons for the recent drop in food stamp participation; and (2) any problems that households with eligible children have experienced in obtaining food stamps."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the analyses underlying the Food and Drug Administration's (FDA) proposed rule on the food supplements, ephedrine alkaloids, focusing on: (1) the scientific basis for FDA's proposed rule; and (2) FDA's adherence to the regulatory analysis requirements for federal rulemaking."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO described the Internal Revenue Service's (IRS) abatement process, focusing on IRS': (1) process for making abatements from initiation through final review in selected IRS locations; and (2) efforts to improve the abatement process."

Here the authors present a possible way to further increase the energy of SLAC single bunch from 50 GeV to 65 GeV or even more, without increasing the rf peak power and accelerator length.

A letter report issued by the Government Accountability Office with an abstract that begins "From fiscal year 2003 through fiscal year 2009, the Department of Homeland Security (DHS) allocated about $5 billion for the Urban Area Security Initiative (UASI) grant program to enhance regional preparedness capabilities in the nation's highest risk urban areas (UASI regions). The Federal Emergency Management Agency (FEMA) administers this program. The Implementing Recommendations of the 9/11 Commission Act of 2007 (9/11 Act) required FEMA to change the size of the geographical areas used to assess UASI regions' risk. The conference report accompanying the Consolidated Appropriations Act for fiscal year 2008 directed GAO to assess FEMA's efforts to build regional preparedness through the UASI program, and determine how the 9/11 Act change affected UASI regions. This report addresses (1) the extent to which FEMA assesses how UASI regions' collaborative efforts build preparedness capabilities, and (2) how UASI officials described their collaboration efforts and changes resulting from the 9/11 Act. GAO surveyed all 49 UASI regions that received funding prior to the 9/11 Act change, and visited 6 regions selected based on factors such as length of participation. GAO also reviewed FEMA's grant guidance and monitoring systems."

This report discusses the continued debate amongst congressional policymakers regarding telecommunications reform. A major point of the ongoing discussion is whether action is needed to ensure unfettered access to the Internet.

This report provides an overview of Arctic-related issues for Congress and refers readers to more in-depth CRS reports on specific relevant topics.

This report discusses the state of Iraqi politics, governance, and human rights, including the worsening relations between local Sunni and Shiite populations.

The report discusses the President's annual funding request for the Peace Corps, efforts to reauthorize the Peace Corps, and related issues. Current issues include the extent to which there is available funding for Peace Corps expansion, whether the Peace Corps has the institutional capacity to expand, and whether volunteers are able to function in a safe and secure environment.

In February and March 2009, the Obama Administration announced its overall plans to increase troop levels in Afghanistan and decrease troop levels in Iraq for 2009 through 2011. Using several Department of Defense (DOD) data reports, this report describes, analyzes, and estimates deployed troop strength from the 9/11 attacks to FY2012 to provide Congress with a tool to assess current and future DOD war funding requests; implications for the U.S. military presence in the region; and deployment burdens on individual service members and each of the services.

Trafficking in persons (TIP) for the purposes of exploitation is believed to be one of the most prolific areas of international criminal activity and is of significant concern to the United States and the international community. This report discusses the global and ongoing problem of TIP in detail, as well as anti-TIP programs and U.S. and international efforts to combat TIP.