This paper reviews current progress in the development of fusion power from the engineering point of view and highlights the most outstanding technical issues which must be resolved. (MOW)

Supporting research activities continued to provide the technical basis for future mirror-confinement experiments. The industrial development of a high-current, high-field, high-current-density Nb/sub 3/Sn conductor was the main goal of the superconducting magnet program. Beam direct conversion was being developed as a means of raising the efficiency of neutral-beam production, and plasma direct conversion was shown to work as predicted. Conceptual designs were completed for various types of power reactors. The neutral-beam program progressed in three areas: experimental work, facility construction, and conceptual design. Experiments on the 14-MeV Rotating Target Neutron Source (RTNS-II) included participation by experimenters from many different institutions. Methods for processing tritium-contaminated wastes were pursued, as were studies of tritiated methane in stainless-steel vessels, the control of tritium in mirror fusion reactors, and the development of titanium tritide targets for the RTNS. The report period witnessed a rapid maturation in ability to describe theoretically the behavior of ion-cyclotron noise in the 2XIIB and the influence of that noise on the confined plasma. The high beta values achieved in 2XIIB prompted much theoretical analysis of the properties of high-beta equilibria and stability, including those of a field-reversed state. Excellent progress was made on the development of computer codes applicable …

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John L. Hill, regarding a legal question submitted for clarification; Use of state-owned equipment and facilities by MHMR physicians to engage in private medical practice conducted for profit.

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John L. Hill, regarding a legal question submitted for clarification; Validity of agreement between Texas State Board of Plumbing Examiners and Texas State Board of Landscape Architects.

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John L. Hill, regarding a legal question submitted for clarification: Whether salary supplements made with gift funds must be reported to the Secretary of State under section 1(q) of article V of the General Appropriations Act.

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John L. Hill, regarding a legal question submitted for clarification; Operations of a medical clinic in Waller County; Operations of a medical clinic in Waller County.

A list interpretive language designed for microcomputer-based programmable control systems is described. The purpose of this project was to create an easily understood method for scientific personnel (with minimal programming background) to program an MCS-8 microcomputer-controlled chemistry system, via teletype. The intent is for the language to compete in simplicity of understanding with a rotating cam programmer. Also needed was an interrupt capability, a special instruction set, and the ability to read and punch paper tapes of the user's programs. In effect, this program simulates a different computer architecture resulting in an entirely new instruction set, I/0, and interrupt capability. At present there are twenty-one instructions, the special interrupt option, and the ability to process sublists. New users' instructions are very easily added.

A fast-neutron pinhole camera with high detection efficiency and nanosecond time-resolution has been developed and applied to the investigation of the spatial and temporal distributions of DD- and DT-neutrons produced by thermonuclear plasmas. The pinhole consists of a specially designed 1.15 m long copper collimator with an effective aperture of 1 mm diameter. Several different types of spatial resolution detectors have been used at the image plane: (1) a multi-element, scintillation-photomultiplier system used for time-resolved measurements consisting of sixty-one individual detectors, (2) a scintillation-fiber-chamber coupled to a gated image-intensifier tube used for direct photographing of the neutron image, and (3) a propane bubble chamber used for time-integrated recording with a capability to distinguish DD- from DT-neutrons. Pulsed neutron sources with typical dimensions of 1 cm emitting of the order of 10/sup 12/ neutrons over a time period of 10-100 nsec have been investigated. A spatial resolution of 1 mm and a time resolution of approximately 10 nsec was achieved in the investigations of dense plasma compression phenomena.

Pressing materials problems that must be solved before tritium can be used to produce energy economically in fusion reactors are discussed. The following topics are discussed: (1) breeding tritium, (2) recovering bred tritium, (3) containing tritium, (4) fuel recycling, and (5) laser-fusion fueling. (MOW)

The design of business data processing applications utilizing minicomputers requires special considerations throughout the development of the systems project. Minicomputer features, capabilities, and limitations must be closely examined prior to the implementation of the design phase. The design requirements of an inventory control minicomputer system currently being installed by the Data Processing Services Department of Lawrence Livermore Laboratory are presented.

A survey was made of protection and suppression technologies relative to liquid sodium fires at selected sites. These technologies will find application in the Liquid Metal Fast Breeder Reactor (LMFBR) program. Based on this survey, a series of conclusions and recommendations are given. Dry type powder agents will only be of use of relatively small sodium fires. Large fires will be extinguished by inerting the chamber or collecting pans where the sodium leak occurs. Liquid sodium fire suppression methods must be incorporated into the initial design of an LMFBR. There exists a need for close coordination of liquid sodium fire technology and guidelines for fire fighting personnel. Suggestions are made for a number of technical development programs. An extensive search for new suppression agents is not recommended although carbon microspheres should be submitted for approval.

A brief description is given of a calculational model developed to simulate a T(D,n)/sup 4/ He neutron source which is anisotropic in energy and intensity. The model also provides a means for including the time dependency of the neutron source. Although the model has been applied specifically to the Lawrence Livermore Laboratory ICT accelerator, the technique is general and can be applied to any similar neutron source.

Laboratory apparatus has been designed, built, and put into operation to study the supercooling of Sn--Si melts and the uptake of silicon from silanes. Values of supercooling of Sn--Si melts as high as 78/sup 0/C at 1100/sup 0/C and 39/sup 0/C at 1200/sup 0/C have been observed. Results to date have been limited by nucleation caused by foreign material floating on the surface of the melt. Spontaneously nucleated planar platelet growth has been observed at the Sn--Si supercooled surface having growth rates of approximately 0.5 cm/min. Homogeneous nucleation of silane decomposition has been studied at 1015/sup 0/C and 1135/sup 0/C. The flow rates of HCl required to suppress gas phase decomposition have been determined for silane flow rates up to 4.5 x 10/sup -3/ mole/min. Initial silicon uptake experiments have shown that at least 20 percent of the incoming silicon contained in a flowing silane gas stream can be incorporated into liquid tin at 1040/sup 0/C.

Scientists are finding increased applications for microprocessors as process controllers in their experiments. However, while microprocessors are small and inexpensive, they are difficult to program in machine or assembly language. A high-level language is needed to enable scientists to develop their own microprocessor programs for their experiments on location. Recognizing this need, LLL contracted to have such a language developed. This report describes the result -- the LLL BASIC interpreter. 1 figure, 4 tables.

Resonance self-shielding calculations are presented for fissile material (U-235) and iron using the Probability-Table-Method in a Monte Carlo code.

Irradiation of MetGlas samples in position E-1 of the reactor core is described. Data are tabulated on neutron energy and flux, and irradiation time. Data are also included on a specimen of 304 stainless steel cut from the irradiation assembly liner to be used for dosimetry. (JRD)

The general guiding-center energy principle is applied to the derivation of equilibrium and stability conditions in the limiting case of a large-aspect-ratio system.

The purpose of this study was to obtain a simulation of the most rapid start-up thermal transient which would be encountered in the BIPS operation. As an aid in reducing the severity of the transient, it was agreed with the NASA that the case to examine would be determined by the following logic: (a) determine the lowest temperature at which a start could be accomplished using a 2 HSA configuration; and (b) define the transients for a 3 HSA start which was initiated when the heat source achieved the start temperature determined for the 2 HSA configuration of (a). This approach limits the transient analysis of the recuperator and the HSA to a single case. (The 2 HSA start requires a higher initial temperature due to lower thermal capacity with only two HSA's). The transient defined is ''worst case'' for either two or three HSA operation. In order to obtain the above data, several computer cases were run. A summary of the computer runs made is presented in tabular form.

The temperature distribution along a coaxial electrical cable can be determined by means of frequency-domain reflectometry if the cable has an inner sheath of a suitable temperature-sensitive dielectric material. Such a technique would have advantages in cost and convenience over the conventional method of placing a separate thermocouple at each point where the temperature is to be measured. It would be especially useful for underground applications in assessing geothermal reservoirs and in instrumenting in situ coal-gasification and oil-shale-retorting experiments.

The gamma-ray energy region from 120 to 350 keV was investigated using a 1-cc planar Ge(Li) detector. Plutonium isotopic ratios are presented for 0.25 g NBS Standard Reference Material. The results show the feasibility of obtaining /sup 240/Pu and /sup 241/Am isotopic ratios to better than 5 percent of the chemical value by using gamma-ray spectrometers having 600-eV resolution at 122 keV. A single exponential equation has been used to predict the equilibrium of a 1-in. x 3-in. calorimeter (Mound Laboratory Model 100). The formulas necessary for this prediction are presented with some preliminary results. This technique has proved to be successful in significantly reducing the time required to calorimetrically analyze a sample. The installation of the X,Y,Z transporter on a test frame and the computer programs necessary to test it were completed. Tests were performed to determine the sensitivity, thermal resistance, heat distribution error, and reproducibility of the APAS calorimeter. Two computer programs were written to facilitate the handling of inventory verification data. Seventy-nine samples were analyzed using calorimetric assay techniques. The results of the isotopic ratio determinations are presented. The overall uncertainty in the plutonium measurements is less than 1 percent. Gamma-ray spectroscopic techniques were used to measure …