A review of methods for static-field compression of an electron ring is shown to suggest advantages for a method in which there is no axial acceleration or deceleration of the ring. In the method proposed here the static magnetic field itself is o such a character that the electrons are neither focused nor defocused in the axial direction. The integrity and movement of the ring through the compressor is controlled by a small traveling magnetic well. The feasibility of creating such a traveling well is discussed, and an example is presented of a current distribution capable of producing the static magnetic field of the compressor.

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A Technicon Autoanalyzer for hexavalent chromium has been installed at the Automatic Columbia River Monitoring Station located along the west bank of the Columbia River. The sample water is delivered to the building by a deep well jet pump for continuous monitoring for gross gamma, {sup 131}I, hexavalent chromium, and for emergency water samples. An alarm system indicates unusually high activity levels. The unit was installed to detect hexavalent chromium which reaches the river as a result of cooling water treatment for the production reactors upstream, and via groundwater as a result of waste disposal practices at the 300 Area. The detection of the Cr{sup +6} ion is based upon its reaction with diphenylcarbazide to produce a reddish-violet color in slightly acid solutions. The degree of color is indicated by light absorption in the calorimeter which is plotted on the recorder and is directly related to the concentration of hexavalent chromium in the river water. Although designed to operate continuously and automatically, routine inspection is required to assure proper functioning of all components and to perform the required maintenance and pick up of recorded data. The following data is to provide general information relevant to the operation and maintenance of …

Tubular thermoelectric module technology was advanced during Phase II-C of the Compact Converter Program to the extent that the baseline temperature for module testing was raised from 1000°F 1100°F. Significant development work was performed to produce a system utilizing a heat pipe that transmitted thermal energy from an external heat source to a tubular module.

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A series of three tests will be performed to evaluate: temperature gradients between wall and central coolant channels in an FFTF fuel assembly to assess thermal stress level in the pins. The potential hot spot caused by the presence of a wire wrap spacer. A single electrically-heated 7-pin fuel assembly model will be used to perform these tests. The configuration is summarized in Table 1 and the instrumentation in Figure 1. Pins 1, 2, and 7, along with the local coolant thermocouples, characterize the central and outer channels. Pins 4 and 6 provide data on the hot spot under the spacer, while pin 3 (along with pin 2) provides data on the gradient across an outer row pin.

SAMPO is a Fortran IV program written to perform the data- reduction analysis described by J. T. Routti and S. G. Prussin in Photopeak Method for the Computer Analysis of Gamma-Ray Spectra from Semiconductor Detectors, Nuclear Instruments and Methods 72, 125-142 (1969). The code has also been used to analyze other spectra with peaks and continua. Program SAMPO can be used for an automatic off-line or an interactive on-line analysis. It includes algorithms for line-shape, energy, and efficiency calibrations, and peak-search and peak-fitting routines. Different options are available to make the code applicable to accurate nuclear spectroscopic work as well as to routine data reduction. The mathematical methods and their coding are briefly described. Instructions for using the program and for preparing input data are given and the optimal strategies for running the code are discussed. Instructions are given for using the LRL program library version of SAMPO and for obtaining source decks.

Plutonium-238 is an important heat producing isotope which is being used in increasing amounts as fuel in isotopic power generators for space, terrestrial, and oceanographic applications. Only within the past few years has the quantity of plutonium-238 become large enough to be considered as a potential nuclear criticality hazard. In order to insure nuclear criticality safety in the storage, processing and assembly of devices containing plutonium-238, a program has been established at Mound Laboratory to investigate the nuclear criticality properties of this isotope. This paper will summarize what is presently known about the criticality behavior of plutonium-238, what are some of the criticality controls used as Mound Laboratory for processing plutonium-238, and what measurements are needed in order to establish a Nuclear Safety Guide for Plutonium-238.