The electromagnetic interaction of an intense relativistic coasting beam with itself, including the effect of a confining nonperfect vacuum tank, or a quiescent rf cavity, is investigated theoretically. It is shown that the resonances that may occur between harmonics of the particle circulation frequencies and the electromagnetic modes of the cavities can lead to a longitudinal instability of the beam. A criterion for stability of the beam against such longitudinal bunching is obtained as a restriction on the shunt impedance of the rf cavity, or the Q of the vacuum tank. This criterion contains the energy spread and intensity of the coasting beam, as well as the parameters of the accelerator. Numerical examples are given which indicate that in general the resonances with the vacuum tank will not cause instabilities, while those with an rf cavity can be prevented from causing instabilities by choosing the shunt impedance at a sufficiently low but still convenient value.

Object of this paper is to present preliminary results of experiments in Hanford in-reactor loops to determine if exposure to neutrons will increase corrosion rates of Al alloys, Zy-2, and 304 stainless steel. Results were negligible or no corrosion.

The viscosity of a liquid plutonium-iron eutectic alloy, which contains 9.5 atom per cent iron and melts at 411 degrees C, was determined up to 808 degrees C at Mound Laboratory by an oscillating cup viscosimeter. This type of apparatus employed a right-circular cylindrical cup containing the liquid under investigation attached to a torsion fiber. The dampening effect of the liquid upon the normal oscillations of the pendululm was a function of the viscosity of the liquid. The amplitudes of the oscillations of the pendulum were measured by a photographic technique. The periods of the oscillations were determined by an automatic timing mechanism. The reliability of the viscosimeter was demonstrated by following the expected function of the viscosity of liquid lead and bismuth over a larger temperature range than was previously reported.

The constitution of the plutonium-copper binary alloy as determined by differential thermal analysis is presented. The system is characterized by two congruent melting compounds, PuCu2 (m.p. 865 degrees C.) and Pu4Cu17 (m.p. 954 degrees C.); two incongruent melting compounds, PuCu4 (m.p. 906 degrees C.) and Pu2Cu11 (m.p. 926 degrees C.); three eutectics, 96 atom per cent copper (m.p. 626 degrees), 70.5 atom per cent copper (m.p. 849 degrees C.), and 91 atom per cent copper (m.p. 881 degrees C.); and two peritectics at 75 atom per cent (m.p. 906 degrees C.) and 85.5 atom per cent (m.p. 926 degrees C.). Solid solution was found above 97 atom per cent plutonium. The apparatus, the method of investigation, and the binary alloy phase diagram is discussed.

Article reprinted from the Texas State Journal of Medicine, discussing issues in medical education, such as a recent decline in applicants, teacher shortage, finances, and surgeon training.

Article from the April 1960 issue of the Texas State Journal of Medicine providing biographical information about Dr. May Owen, the first woman president of the Texas Medical Association.

Article from the December 1960 issue of the Texas State Journal of Medicine listing the program for the Conference for County Medical Society Officials, to be held in Austin on Saturday, January 28, 1961.

Draft of a journal article about Dr. May Owen's election to President of the Texas Medical Association. The article discusses Dr. Owen's life, career, and accomplishments.

When the construction of the confinement facilities for Hanford production reactors is completed, the potential for contaminating the environment with accidentally released fission products will be greatly reduced. This was demonstrated already when rupture debris burned in the rear face area of one of the reactors in which the fog spray was installed and ready for service. The fog spray effectively prevented the spread of contamination to the ventilation equipment downstream of the rear face enclosure. Also, the commercially- available absolute filters and charcoal beds will significantly decontaminate the exhaust air, stream of all fission products except the noble gases. Laboratory studies indicate that the filter system should remove at least 50 percent of all fission product halogen vapors and over 90 percent of the particulate matter released from a nuclear incident. In addition, the charcoal beds should provide an additional 90 to 95 percent decontamination of the halogens that manage to pass through the filter. It is not expected that any of the noble gases released will be removed by this system. Laboratory studies, in general, substantiate previous estimates on the release of fission products from overheated uranium fuels. The theoretical estimates are quite accurate for the volatile and …

Article reprinted from The Harvard Business Review discussing trends in United States imports and exports and maximizing profits in international business trade.

Article reprinted from The Harvard Business Review arguing that the reason for a lack of growth in an industry is due to a failure of management.

A Po/sup 210/ source was used to furnish a reliab1e ground for both electron and positron sources. This was done to prevent the electron and positron sources from charging during BETA spectral studies in magnetic lens spectrometers. An approximately 20- mu c Po/sup 210/ source was placed 1.2 in. behind a 4- mu c Na/sup 2 / 2>s positron emitter backed by 20- mu g/cm/sup 2/ Formvar in the spectrometer; this arrangement resulted in a charging rate decrease of approximately 80%. When the source was placed 0.5 in. away, no charging was detectable over a period of more than one week. The discharge is attributed mainly to the loss of electrons from the source and backing caused by ionization of alpha particles since few alpha particles are stopped near the source. (B.O.G.)

Article describes the life and career of Joe Kagey. A. M. Gibson specifically focuses on his contributions at the Seneca Indian School and to the history of education of American Indian youth.

Article describes the experiences and work of the "covered wagon geologist" Charles N. Gould. Mildred Armor Frizzell provides context to excerpts of the pioneer's autobiography, where he discussed his work conducting geological surveys and teaching at the University of Oklahoma.

Article constructs a portrait of the career and leadership of the White Lieutenant, Chief Alexander McGillivray of the Muscogee (Creek) Nation, through correspondence from the late eighteenth century. Carolyn Thomas Foreman provides context to the conflict between the Cowetas and the Okfuskees and other issues represented here.

Article discusses the Rock Cut region on the Santa Fe railway, railroad and mining activity in the area, and excerpts of newspaper reports that discussed the history of railroad companies in Oklahoma.

Article describes the history of the American Colonization movement, repatriation of African Americans to Africa, and the history of plantation slavery in the Cherokee Nation. Theda Perdue explores the reasons behind the mass emigration and the struggles both enslaved and freed African Americans faced.

The results presented here have shown that the spectral signature of absorption in a cloudy layer could be duplicated (except for the 1.06 {micro}m region) with a rather sophisticated radiative transfer model, if the absorption by both aerosol and cloud droplets was enhanced. In the case of aerosol, highly absorbing (imaginary part of refractive index between 0.1 and 0.01), small (2 - 5 nm) particles dramatically improved the match between observations and model computations. Duplication of the observed cloud absorption required a thin layer of drizzle (large droplets). The only feature remaining unexplained at this time is the enhanced absorption at 1.06 {micro}m. These results are only based on one day of observations and need to be verified. This study suggests the need for additional co-located broadband and spectral observations in clear and cloudy sky conditions in different atmospheric regimes. In-situ aerosol and cloud droplet microphysical measurements will be crucial to unravel the role of these particles in the ''enhanced absorption'' issue. Finally, accurate absorption measurements are needed at 1.06 {micro}m to understand observed absorption in that spectral region.

Article provides a sketch of the career and family of Maria Tallchief, Oklahoma ballerina of Osage descent. Frank F. Finney, Sr. discusses the origin of the Tallchief name and Maria's road to success.

Article provides historical context to the Indian removal treaties of the early nineteenth century and focuses particularly on negotiations with the Choctaw Nation. Arthur H. DeRosier discusses how the Choctaw allied with the United States government in previous conflicts, and the way their removal was debated by government officials.

Article describes the life and work of Fred L. Wenner, a reporter who came to Oklahoma Territory for the 1889 land run. Mary E. Newbern discusses the events Wenner covered and the development he observed in Oklahoma's early years.

Article highlights the idea of abolitionist sentiment being present in the Choctaw Nation pre-Civil War era and the discussion published in newspapers about missionaries supporting the anti-slavery movement.

Article describes the life and memories of Harriet Patrick Gilstrap, a pioneer teacher who provides a personal narrative here of her time teaching on the frontier and working with the Sac and Fox Agency.

Article gives a brief history of the Daugherty Ranch, established in the Muscogee (Creek) Nation by James Monroe Daugherty. Ella M. Robinson describes the cattleman's journey, the extent of his holdings, and the success his met in Indian Territory.