The increasing availability of short lived gamma and positron emitting isotopes, coupled with the importance of dynamical studies and better imaging, has generated the need for an improved {gamma}-ray camera. The authors discuss a new type of {gamma}-ray camera which makes use of electron avalanches in liquid xenon. A configuration currently under development is shown in Figure 1. The successful operation of a liquid xenon proportional counter was recently reported. The liquid xenon camera promises better spatial resolution and higher counting rate than the existing NaI(Tl) scintillation camera. The spatial resolution for {gamma} rays is in principle limited only by the range of photoelectrons in liquid xenon, which is < 0.2 mm for energies < 1 MeV. A counting rate of 10{sup 6} C/s or more appears possible. As a result of the better resolution and high counting rate capability, the definition of the picture is improved. In addition, the high counting rate capability makes possible dynamic studies which were previously unfeasible. Although they expect the energy resolution with liquid xenon to be superior to that of NaI, the preliminary measurements show 17% FWHM for 279 keV {gamma}'s. Improvements are expected by using better geometry and smoother wire.

This report contains an explanation of the various sources and uses of federal government unified budget funds, specifically how they have been employed under different presidential administrations.

Conceptual designs for 6- and 18-subassembly casks are presented. The casks are intended for transport of LMFBR spent fuel which has decayed a minimum of 30 days. These casks use sodium as the primary coolant, an auxiliary shield coolant system in normal operation, heavy steel members as both gamma shield and structure, and a eutectic mixture of LiOH and NaOH as a neutron shield. The analysis indicates that there will be no leakage of coolant or fission products under normal or hypothetical accident conditions.

In this report an estimate of the pion dose from a stopping {pi}{sup -} beam is made. Dose rates of 15 krad {center_dot} gram/min are obtained. These are adequate for clinical use.

SPEAKEASY has continued to evolve and grow in power. The current production versions, referred to as SPEAKEASY-3, contain many features that have not been formally documented. The needed documentation for the most important of these features is provided in this report. Individual new words that are now available are explained and illustrated in accompanying sample runs. Because of the growing use of the language in interactive situations, emphasis is placed on explaining facilities oriented to such usage. The power of a library-directed programing language is discussed, and the concept of the SPEAKEASY system is introduced. This report is a supplement to previously available documentation.

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A general description of the treatment of the Bevatron injection problem is presented, and the programs are described. The program INJECT for the acceptance calculation determines what beam can be accepted into the machine as a coasting beam. The rf trapping calculation, PHASE, tells what beam will be accepted as the rf voltage is turned on. The accepted pulse calculation, HINJ, uses the results of the two previous calculations to determine what fraction of an injected pulse survives the injection, rf trapping process. The appendices contain sample control card checks, input data cases, and selected program output. (WHK)

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Report on water quality in selected reservoirs in Texas from April 1965-September 1969.

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This report is an analysis of a proposed tax on sulfur oxide emissions as an economic incentive to reduce air pollution.

This report covers the basics, effects, and alternatives of fluoridation.

This report speaks of Northern desegregation cases might lead on to believe that there is a constitutional difference between Northern and Southern desegregation cases solely because of geography.

This report is brief histories of major and minor political parties in the United States.

This report outlines the Keogh Act, which created retirement plans for workers who were self-employed.

This report is a Pro-Con Discussion on the Resumption of Relations of U.S. Policy Toward Cuba.

This report is a series of ten articles by Jim Bishop appearing in the Washington Post, January 14th through 24th 1972 editions.

This report is a list of all bills introduced concerning penal reform and prisoner's rights during the first session of the 92nd Congress.