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Data are provided for the ordering of fuel assemblies for the LOFT reactor. (JDB)

This report contains discusses of the following topics on Californium-252: First sales of californium-252; encapsulation services discussed; three new participants in market evaluation program; summer training programs to use californium; Californium-252 shipping casks available; Californium-252 questions and answers, radiotherapy; neutron radiography; natural resources exploration; nuclear safeguards; process control; dosimetry; neutron radiography; neutron shielding; and nuclear safeguards.

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The technology, cost and potential of geothermal resources in California are examined. The production of power from dry stream fields is expanding in Northern California, at The Geysers, at costs that compare favorably with alternate means of generation. The possibility exists that economic production of power can be started in the Imperial Valley, but numerous issues remain to be resolved; chief among them is the demonstration that commercially valuable aquifers indeed exist. The production of demineralized water from the geothermal fluids of the Imperial Valley depends, among other things, upon the identification of other sources of water for power plant cooling, or for reservoir reinjection, should it be necessary to avoid subsidence. It would appear that water production, without the income-producing capability of associated power generation, is not economically reasonable. The pace of geothermal development at the Geysers could probably be accelerated perhaps offering the opportunity for maintenance of adequate generating reserves should their nuclear construction program be delayed. The unknown factors and risks involved seem to preclude the Imperial Valley resource from being immediately effective in improving the power generation picture in Southern California. However, in the next decade, geothermal power could provide a useful energy increment, perhaps 10 …

An analytical solution for acoustic flaw triangulation on thin spherical shells has been prepared. A FORTRAN program is provided which takes as input the differences in the arrival times of acoustic energy at the transducers and evaluates the spherical coordinates of the flaw. Only three experimental time differences need be measured. For this measurement, four transducers are required. One transducer is placed at (R, 0, 0) in spherical coordinates; the other three are spaced 90 degrees apart around the equator.

Electromagnetic transition rates within the /sup 38/Cl and /sup 40/K nuclei were studied through lifetime measurements with a double-coincidence variant of the Doppler-shift-attenuation method. In /sup 40/K the excitation energies (MeV) and measured mean lives (psec) are 0.800 (0.56 +- 0.13), 0.891 (1.53/sub -0.35//sup +0.40/), 1.959 (0.7 +- 0.5), 2.047 (0.49 +- 0.10), 2.070 (0.4/sub -0.2//sup +0.3/), 2.103 (0.54 +- 0.15), 2.261 (0.05 +- 0.05), 2.290 (0.33/sub -0.20//sup +0.40/), 2.291 (0.31/sub -0.12//sup +0.18/), 2.419 (0.55/sub -0.30//sup +0.85/), 2.575 (0.22 +- 0.10), 2.626 (0.32/sub -0.16//sup +0.40/), 2.731 (less than 0.120), 2.787 (0.13/sub -0.13//sup +1.00/), 3.110 (less than 0.14), 3.228 (0.04 +- 0.04), and 3.629 (less than 0.10). In /sup 38/Cl the lifetime results are 0.755 (0.30 +- 0.60), 1.309 (0.55/sub -0.20//sup +0.40/), 1.617 (1.5/sub -0.6//sup +1.2/), 1.692 (1.3/sub -0.3//sup +0.5/), 1.746 (1.1 +- 0.5), 1.785 (0.10/sub -0.08//sup +0.10/), 1.981 (0.26 +- 0.06), and 2.743 (0.05 +- 0.03). The energies of the low-lying (..pi..d/sub /sup 3///sub 2//)/sup +-1/ (..nu..f/sub /sup 7///sub 2//) shell-model states in /sup 38/Cl and /sup 40/K are known to be accurately related by the Pandya transformation. The (d/sub /sup 3///sub 2//)(f/sub /sup 7///sub 2//) model, when used with effective magnetic moments, can also approximately reproduce the /sup 40/K …

The purpose and method employed in-house to quickly ascertain instrument-coupled working performance of focused search-unit piezoelectric materials of similar physical characteristics is illustrated by comparative presentation of data obtained for lithium sulfate and lead metaniobate "units" utilizing a custom built 725 Immerscope.

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The instrument described is an operational, practical, ruggedized, ultrasensitive, tritium field air sampler assembled for the simultaneous, differential sampling of the environmental air for tritium oxide and elemental tritium. The system uses hardware assembled and packaged in such manner as to facilitate use in the field as well as in the laboratory. The sampling system occupies relatively small space and is simple to operate. The detection sensitivity approaches tritium background levels and is achieved by high volume sampling, efficient removal of tritium oxide and elemental tritium ("tritium gas"), and counting the recovered fractions by liquid scintillation spectrometry.

The power input to the air drive line, input to the air chamber, input to the pumping diaphragm and output from the Kwan-Gett artificial heart has been measured at different atrial pressures with a constant frequency of 120 beats per minute and constant mean arterial pressure of 100 mm Hg. These measurements were made in vitro. The various efficiencies, cardiac outputs and pressures corresponding to the power measurements were also determined. (auth)

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