Farm Tenancy In Robertson County, Texas

This study is based on data received from fifty Negro farmers engaged in permanent agriculture in Robertson County, Texas, It covers the types of farming and the farm incomes of the fifty Negro farmers chosen for the study. The material for this study was collected by personal survey, the assistance from the Negro county extension agents of Robertson County, Texas, plus a few private library references. Fifty Negro farmers representing a cross-section of Robertson County were very cooperative in providing the writer with the necessary information

A dual neutron/gamma source for the Fissmat Inspection for Nuclear Detection (FIND) system.

Shielded special nuclear material (SNM) is very difficult to detect and new technologies are needed to clear alarms and verify the presence of SNM. High-energy photons and neutrons can be used to actively interrogate for heavily shielded SNM, such as highly enriched uranium (HEU), since neutrons can penetrate gamma-ray shielding and gamma-rays can penetrate neutron shielding. Both source particles then induce unique detectable signals from fission. In this LDRD, we explored a new type of interrogation source that uses low-energy proton- or deuteron-induced nuclear reactions to generate high fluxes of mono-energetic gammas or neutrons. Accelerator-based experiments, computational studies, and prototype source tests were performed to obtain a better understanding of (1) the flux requirements, (2) fission-induced signals, background, and interferences, and (3) operational performance of the source. The results of this research led to the development and testing of an axial-type gamma tube source and the design/construction of a high power coaxial-type gamma generator based on the {sup 11}B(p,{gamma}){sup 12}C nuclear reaction

Reporter

Reporter Vol. 69 No. 0

Reporter

Reporter Vol. 69 No. 07 Issue subtitled: Every Rose has a Thor

Reporter

Reporter Vol. 70 No. 01 Issue Subtitled: Home at Last

Reporter

Reporter Vol. 69 No. 0