The intensity and spectral characteristics of x-ray emitted from laser-produced plasmas have been investigated computatinoally and experimentally. a two-dimensional implosi code was used successfully to calculate laser-plasma radiation characteristics and to aid in the design of laser targets for high-yield x-ray production. Other computer codes, in use or under development predict lime strengths and energies for laser-plasma x-ray emission. An experimental effort is aimed at reliable measurements of x-ray yields and spectra. a wide variety of x-ray detection methods have been evaluated, and x-ray yields have been measured from plasmas produced with two dissimilar laser systems. The high energy x-ray spectrum, from about 10 to 140 keV, has been studied using high-gain scintillatino detectors and thick K-edge filters. Various supplementary measurements have provided information concerning characteristics of the target-reflected laser light, the ion energies, and the laser intensity patterns.

Environmental levels of {sup 129}I and natural {sup 127}I have been measured by neutron activation analysis .on samples from throughout the United States at locations near and remote from release points . Highest {sup 129}I concentrations were observed near nuclear fuel reprocessing facilities. Levels of {sup 129}I above natural iodine background were observed at all locations studied. The sample data establishes baseline levels of environmental {sup 129}I for the expanding nuclear industry.

A superconductive energy storage magnet which is connected to the three phase power system could be designed, constructed, and placed in operation at Fermilab which would essentially eliminate the large repetitive power pulses now required from the power system. In addition to the power pulses, voltage flicker is also caused due to the reactive power pulsation. Specifically, a one megawatt hour superconductive energy storage magnet and a 2.00 megawatt thyristorized converter can achieve nullification of these power pulses up to 400 GEV synchrotron operation. Above 400 GEV, operation should be possible up to 500 GEV with appreciable less power pulsing requirements from the system than are now considered permissible. Carried to successful completion, this project would serve to advance applied superconductivity to a highly significant degree. The effect would be of world wide importance to both high energy physics and to the electric power industry. The preliminary magnet design is a 1 MWh dipole composed of cryogenically stable composite conductors connected in parallel with aluminum shield windings. The shield windings carry impressed pulsed currents while eliminating pulsed currents from the dc superconductive windings. Without pulsed currents or pulsed magnetic fields there are no ac losses in standard helium. The major …

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The HFBR Spent Fuel Shipping Cask as modified for shipping longer fuel elements is described in detail and evaluated against ERDAM 0529 standards for packaging; structural integrity under uniform loading or external pressure; criticality; normal transport conditions; hypothetical accident conditions; quality assurance; and operating procedures. (LCL)

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In this paper we describe the transport line between the main ring (MR) and the energy doubler (ED). The transport line is designed on the basis of the following three assumptions: (1) The ED is located at the apex of the same tunnel which encloses the MR. The relative locations of the two rings are shown in Fig. 1. The ED line is 3 feet to the inside and 4 feet above with respect to the MR line. Watching Fig. 1 the beam moves toward the page and the center of the rings is to the right. The continuous outer curve is the cross section of the tunnel in a typical long-straight section, the dashed inner curve is the cross section of the tunnel in the bent section. (2) The beam has to be extracted from one long-straight section of the MR (BO) and injected in the next medium-straight section of the ED (B17). The two rings are assumed to have the same identical lattice structure. (3) To keep the aisle-way in the tunnel as clear as we can it is advisable to extract the beam horizontally but displaced first vertically upward and second horizontally inward. The beam is then …

A number of experiments at beam momenta below {approx} 25 GeV/c have yielded results on {pi}{sup -}{pi}{sup +} and {pi}{sup -}{pi}{sup -} scattering cross sections, obtained by modified Chew-Low extrapolation techniques applied to the reactions {pi}{sup -}p {yields} {Delta}{sup 0}{pi}{sup +}{sup -}. They have applied these same techniques to a small sample (169 events) of the reaction {pi}{sup -}p {yields} p{pi}{sup +}{pi}{sup -}{pi}{sup -} obtained from a 48,000-photo exposure of the NAL 30-inch hydrogen bubble chamber to a 205 GeV {pi}{sup -} beam. The statistics are insufficient to test the validity of the analysis at these high energies but they find {pi}{sup -}{pi}{sup +} and {pi}{sup -}{pi}{sup -} elastic scattering cross sections in the M{sub {pi}{sup {+-}}{pi}{sup -}} {approx} 3 GeV. Results will be presented of an attempt to obtain inelastic and total {pi}{pi} scattering cross-section estimates under similar assumptions.

Results are presented on the production of K{sub s}{sup 0}, {Lambda} and {gamma} and {gamma} in 100 GeV/c {pi}{sup -}p interactions in the 30-inch hydrogen bubble chamber at NAL. The cross sections for the production of {pi}{sup 0}, K{sub s}{sup 0}, {Lambda} and {bar {Lambda}} are derived and compared with those produced in other reactions as functions of the energy. The average number of {pi}{sup 0} produced per collision is the same as in 100 GeV/c pp reactions.

A measurement of the spatial resolution of a liquid-argon filled chamber was performed with minimum ionizing particles. Two multi-strip chambers with 20-{micro}m strip spacing operating in the ionization mode were used in the experiment. They perform in accordance with a simple model based on electron diffusion. An estimate of the amount of electron diffusion in liquid argon is given and the time jitter distribution has a FWHM of 200 ns. Under best conditions, the spatial resolution is better than 20 {micro}m rms with an efficiency of nearly 100%.

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12p.

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