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Activities in the following fields are summarized: plutonium scrap processing, process technology, plutonium trenches and soils, prevention of accidental release, environmental evaluations, and radiation monitoring. (DLC)

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This report is intended as a User's Manual for SWAN''--- a code written for perturbation theory analysis and optimization of the nucleonic characteristics of fusion reactor blankets. SWAN is also applicable to any problem described by the inhomogeneous linear transport equation, e.g., radiation shield problems. The optimization method is based on variational techniques. The variables of the optimization are material densities, with no restriction on their number. One joint restraint may be imposed in addition to upper and lower limits on each density. The parameter to be extremized and the restraint may be either a weighttype (linear) or nucleonic (bilinear) functional. The transport calculations for SWAN are performed with the one-dimensional discrete-ordinate code ANISN. (auth)

A successful method of screening high-dielectric-constant, nonmagnetic, high-loss-factor materials at microwave frequencies was developed to provide material control by incoming inspection. This is accomplished by measuring the S parameters of the material---reliance on the manufacturer's permittivity data and x-ray examination for voids and inclusions is no longer necessary. Use of an automatic network analyzer makes 100% inspection economically feasible. (auth)

The proposed multiparticle spectrometer is designed to study particles produced at small angles (0.5 < theta < 20 mr). It is assumed to be part of a larger set-up, where the larger angles are covered by other spectrometers, or at least a 4 pi detector, such as described by Arnold et al. (CRISP 72-65). The general layout consists of 4 magnets in a symmetrical arrangement. A set of proportional chambers downstream from the first set of magnets can measure both angle and momentum. Using a second pair of magnets, the momenta can be re- combined. Then all tracks will point back to the original interaction point in compact bundle, which may be suitable for particle identification by Cherenkov counters further downstream. (auth)

Analytical shielding work performed for the fast reactor program during the months of July and August included calculations for both the FFTF and the Demo plant, computer code development, analyses of TSF experiments, and a cross- section sensitivity study of a TSF experiment. Most of the FFTF studies were aimed at determining the effect of various design changes on the dose rates at the maintenance deck during reactor operation, in particular, the effects of penetrations through the radial cavity shield and the effect of a new design for the head temperature control system shield. Gamma-ray dose rates due to the activated sodium coolant were also calculated for two locations in the system: around one of the branch-arm piping shields and near the entrances of the 28-in. and 16-in. coolant lines into the IHX cell. The main Demo plant study was for the lower axial shield region; another study has been initiated to calculate the Demo stored-fuel power and the ex-vessel detector response. The code development consisted in setting forth a set of specifications for the fourth version of the discrete ordinates code DOT. The TSF experiments that were analyzed were an experiment in which secondary gammaray production in iron-polyethylene configurations …

Tests performed to determine the long-term stability of Alnico 5 and 8 magnets for use in permanent magnet in-core sodium flowmeters are described. The results of this experiment showed that two processes combine to affect magnetic stability of these magnets at temperatures above 700 deg F: loss of field strength with time, the rate of loss increasing with temperature, and partial recovery of the loss caused by a high-temperature stabilization. The conclusion is that for a given temperature the most stable performance will be obtained by balancing these iwo processes with an optimum stabilization procedure. This procedure has yet to be established. For 12,000-hr operation, the recommended maximum temperatures are 1000 deg F for Alnico 5 (< plus or minus 10% drift), and 1100 deg F for Alnico 8 (< plus or minus 15% drift). (auth)

Test apparatus was designed for the measurement of the in situ permeability in the vicinity of the 1100-ft UI-C shaft at NTS. A very reasonable approximation to a one-dimensional flow geometry was obtined. Measurement of gas injection flow rates and pressures allowed the determination of the effective permeability of the medium around the Ul-C shaft to be from 1 to 10 darcys with the major exceptions at depths of less than 200 ft where the permeability was greater than 40 darcys. However, permeability results were seen to vary with source pressure and, therefore, must be used with discretion. (auth)

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The ALMENDRO Event was conducted on Pahute Mesa at NTS, and was announced as an intermediate yield event (200 to 1000 kt). Strainmeter records were obtalned at three locations in Yucca Flat. One recording site was a triaxial station; the other two were two component stations. The station parameters and pertinent data relating to ALMENDRO are summarized in tabular form. (TFD)

An approach to managing high-level radioactive waste is to separate it into fractions of different half-lives. Existing separations technologies were reviewed and their potential for this application assessed, process concepts expected to be capable of these separations were defined, areas where R&D to develop and design an effective process is required were identified, and an R&D plan for selection and development of a partitioning process was prepared. A wide spectrum of technologies was initially considered. The review concluded that, of all of the alternatives available, solvent extraction and ion exchange separations of the types already widely used in the nuclear industry offer the best prospects for a cost effective process. Partitioning using these technologies to achieve transuranium element decontamination factors on the order of 100 is expected to be feasible. While these technologies exist, they have generally been applied for recovery purposes rather than for the separations purposes needed for partitioning. An R&D program plan for waste partitioning is discussed. (LK)

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On June S, 1973, the 241-T-106 underground liquid waste storage tank, located on the U. S. Atomic Energy Commission's Hanford reservation, was confirmed as leaking. It was predicted that the leaked waste would be retained by the dry sediments well above the water table. A study was instigated to confirm this prediction. Results show the deepest penetration observed was 27 meters below the ground surface or 35 meters above the water table (approximately S7 and 116 feet, respectively). Based on these results and the basic knowledge of liquid movement in Hanford sediments, further movement of the radioactivity from its present location will be negligible. (auth)

Bunched beams can be unstable against longitudinal collective oscillations. In particular, the interaction of a beam with perfectly conducting chamber walls can force the beam into a condition of latent instability. In such a state, growth of oscillation modes can ensue as a result of wall resistivity or as a consequence of the interaction of the beam with resonant structures in the ring. The dependence of the stability criteria on energy, rf voltage, and rf frequency is given. It is shown how a high frequency rf system tends to stabilize the bunches. A speciflc set of parameters for an essentially nonstacked bunched beam p-p storage ring, parameters that are consistent with using the AGS as an injector, is considered. (auth)

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The approximations involved in computing range energy deposition of alpha particles in a DT plasma are discussed, and some numerical results are given. (auth)

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In response to the discovery of a nonlinear index of refraction (n/sub 2/ ) in Nd: glass laser media, experimenters have traditionally expanded the beam diameter (and reduced the intensity) to alleviate the self-focusing tendency. It is proposed here to reduce the peak intensity by injecting a lower intensity and longer-duration pulse into the amplifier chain. It is predicted that the glass nonlinearity will impress upon the pulse a chirp suitable for efficient temporal compression. This may result in more efficient laser operation. Related schemes have been used in radar systems. As an example, the evolution of a 1 nsec (full 1/e duration) temporally Gaussian pulse in a 2 m long Nd: glass laser chain was calculated. For a chain averaged intensity of 2 GW/cm/sup 2/, one calculates that the pulse could be subsequently compressed (by a series of GiresTournois interferometers) to 125 psec with good stability against input pulse amplitude noise. (auth)

The purpose of the included chart is to let a user quickly see what is available in computer graphics output devices and thereby to aid him in choosing the most appropriate method for putting out computer-contained information in graphic form. Listed on the chart are the most commonly used graphic output devices with those used more frequently appearing higher on the list. At the bottom are devices which are anticipated in the near future. In addition to providing technical information, the chart also includes information about available literature and use of the devices. (MOW)

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Laminated flat cables using Kapton film were fabricated; these cables withstood temperatures up to 1000 deg F (538 deg C) for 10 minutes and potentials as high as 20 to 30 kV dc. A superior polyimide adhesive, Thermostik-D', was originated in the Bendix Polymer Laboratory, and a moldable polyimide powder and a process for using it were developed. These materials exhibit electrical strengths up to 625 volts/mil (24 kV/mm) and temperature resistance as high as 850 deg F (454.4 deg C). (auth)

The experimental program was divided into the areas of nuclear physics (charged-particle experiments, gamma-ray experiments andd beta decay, neutron time-of-flight experiments, x-ray fluorescence analysis, other activities), intermediate enengy physics, and apparatus and facility development. The energy- loss spectrograph, rotating-beam neutron time-of-flight spectrometer, and cyclotron and the rearch done using these facilities are described. The theoretical program has concentrated on the effects of two-step processes in nuclear reactions. The trace element analysis program continued, and a neutron beam for cancer therapy is being developed. Lists of publications and personnel are also included. (RWR)