GaAs transistors formed by Be or Mg ion implantation

N-p-n transistor structures have been formed in GaAs by implanting n-type substrates with Be ions to form base regions and then implanting them with 20-keV Si ions to form emitters. P-type layers have been produced in GaAs by implantation of either Mg or Be ions, with substrate at room temperature, followed by annealing at higher temperatures

John O. Marsh, Jr. to Senator James O. Eastland, 18 September 1976

Typed letter signed dated 18 September 1976 from John O. Marsh, Jr., Counselor to the President, to Eastland, re: Texas Shrimp Association resolution. Attached: copy typed letter dated 20 September from Eastland to Robert G. Mauermann, Executive Director of Texas Shrimp Association, re: Gulf Coast fisheries and Mexico. Attached: copy typed letter dated 20 September from Eastland to Robert P. Jones, Executive Director of Southeastern Fisheries Association, re: above topic. Attached: copy telegram dated 17 September 1976 from Paul Herring, President of Southeastern Fisheries Association; Harold L. VonHarten, President of Florida Shrimp Association; & Jones to Ford, re: above topic; envelope addressed to Eastland. Attached: copy typed letter dated 16 September 1976 from Eastland to Mauermann, re: above topic. Attached: copy typed letter dated 16 September 1976 from Eastland to Marsh, re: above topic. Attached: copy typed manuscript dated 17 August 1976 entitled Resolution of the Board of Directors of the Texas Shrimp Association.https://egrove.olemiss.edu/joecorr_g/1078/thumbnail.jp

Development of ion implantation techniques for microelectronics

Ion implantation process for fabricating active devices in high bandgap semiconductor materials for high temperature operatio

Macroscopic and microscopic studies of electrical properties of very thin silicon dioxide subject to electrical stress

The electrical characteristics of various size tunnel switch diode devices, composed of Al/SiO2/n-Si/p+-Si layers, which operate with a range of parameters (such as current densities in excess of 104 A/cm2) that stress the oxide layer far beyond the levels used in typical thin oxide metal-oxide semiconductor research have been examined. It is found that the first time a large current and electric field are applied to the device, a "forming" process enhances transport through the oxide in the vicinity of the edges of the gate electrode, but the oxide still retains its integrity as a tunnel barrier. The device operation is relatively stable to stresses of greater than 107 C/cm2 areally averaged, time-integrated charge injection. Duplication and characterization of these modified oxide tunneling properties was attempted using scanning tunneling microscopy (STM) to stress and probe the oxide. Electrical stressing with the STM tip creates regions of reduced conductivity, possibly resulting from trapped charge in the oxide. Lateral variations in the conductivity of the unstressed oxide over regions roughly 20–50 nm across were also found

Sea surface determination from space: The GSFC geoid

The determination of the sea surface/geoid and its relative variation were investigated and results of the altimeter experiment on Skylab to test the geoid are discussed. The spaceborne altimeter on Skylab revealed that the sea surface of the world's oceans can be measured with an accuracy in the meter range. Surface variations are discussed as they relate to those computed from satellite orbital dynamics and ground based gravity data. The GSFC geoid was constructed from about 400,000 satellite tracking data (range, range rate, angles) and about 20,000 ground gravity observations. One of the last experiments on Skylab was to measure and/or test this geoid over almost one orbit. It was found that the computed water surface deviates between 5 to 20 m from the measured one. Further outlined are the influence of orbital errors on the sea surface, and numerical examples are given based upon real tracking data. Orbital height error estimates were computed for geodetic type satellites and are found to be in the order of 0.2 to 5 meters

The validation of a short form test of adult intelligence

This thesis deals with the validation of a short form of the Wechsler-Bellevue Intelligence Scale. The data used for this validation were obtained from the Psychology Clinic of the Medical College of Virginia, The State Mental Hygiene Clinic, and the files of the Psychology Department of the University of Richmond

The validation of a short form test of adult intelligence

This thesis deals with the validation of a short form of the Wechsler-Bellevue Intelligence Scale. The data used for this validation were obtained from the Psychology Clinic of the Medical College of Virginia, The State Mental Hygiene Clinic, and the files of the Psychology Department of the University of Richmond

Notice of a new fossil annelid (Helminthodes antiquus) from the lithographic slates of Solenhofen

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