Domestic Relations

Covers cases on property settlement agreements—contempt—imprisonment for debt

Recovery by Federal Prisoners Under the Federal Tort Claims Act

May a federal prisoner, who has been injured due to the negligence of a federal employee while incarcerated in a federal prison, recover from the United States under the Federal Torts Claims Act?\u2

A Low Noise Receiver for Submillimeter Astronomy

A broadband, low noise heterodyne receiver, suitable for astronomical use, has been built using a Pb alloy superconducting tunnel junction (SIS). The RF coupling is quasioptical via a bowtie antenna on a quartz lens and is accomplished without any tuning elements. In its preliminary version the double sideband receiver noise temperature rises from 205 K at 116 GHz to 815 K at 466 GHz. This is the most sensitive broadband receiver yet reported for sub-mm wavelengths. Its multi-octave sensitivity and low local oscillator power requirements make this receiver ideal for remote ground observatories or space-borne telescopes such as NASA's Large Deployable Reflector. A version of this receiver is now being built for NASA's Kuiper Airborne Observatory

Optimizing double-sideband SIS quasiparticle mixers

Calculations based on the quantum theory of mixing in single-particle tunnel junctions show that there is a fairly simple strategy for optimizing the performance of double-sideband superconductor-insulator-superconductor (SIS) quasiparticle mixers. The best mixer noise temperature is obtained when the signal source is matched to the local oscillator (LO) admittance of the junction. This applies over a very wide range of LO and DC bias conditions. These calculations support the contention that it is the energy dissipation in the device which is important in determining the noise performance, not the small signal admittance or the power gain. This appears to be another demonstration of the Callen and Welton fluctuation-dissipation theorem. which states that it is the dissipation of energy which is responsible for the noise generation in a wide range of devices, and it is this energy dissipation mechanism to which the signal should be coupled to minimize the noise

Exposure damage mechanisms for KCl windows in high power laser systems

An experimental study of the 10.6 micrometer and 0.6328 micrometer optical properties of single crystal and europium doped polycrystal is described. Significant variations in the optical properties are observed over periods of exposure up to 100 hours. Models are proposed to predict the 10.6 micrometer absorptivity for long exposure periods. Mechanical creep has been detected in both materials at high temperature

Clinical evaluation of anterior corneal mosaic as a predictor of successful contact lens wear

Goldmann tonometry was used to quantify pressure required to induce the anterior corneal mosaic pattern in 51 subjects. Sixteen subjects divided into high and low groups based on the pressure readings were fit with Fluoroperm 60 rigid gas permeable (RGP) contact lenses and followed for 3 months. Evaluation of keratometry, 3-9 staining, subjective comfort and vision, photoelectric keratoscope distortion and pachometry was performed . I The study attempted to determine if the ease of inducing the mosaic pattern was related to the ability of subjects to wear RGP contact lenses successfully. Statistical analysis showed no significant difference between the groups