Neutron capture cross sections for /sup 86/Sr and /sup 87/Sr at stellar temperatures. Revision 1 (open access)

Neutron capture cross sections for /sup 86/Sr and /sup 87/Sr at stellar temperatures. Revision 1

Recent work on s-process nucleosynthesis has focused attention on the investigation of capture cross sections for nuclei in the mass region near the N = 50 closed neutron shell. Of special astrophysical interest are (i) the analysis of the s-process branching through /sup 85/Kr as a monitor of stellar neutron density and temperature and (ii) the investigation of the possible chronometric pair /sup 87/Rb-/sup 87/Sr as an independent measure of the age of the galaxy. For both problems the capture cross sections of the two pure s-process nuclei /sup 86/Sr and /sup 87/Sr have to be known to an accuracy of 5% or better. The current investigation of the neutron capture cross sections for /sup 86/Sr and /sup 87/Sr was undertaken to extend recent measurements by Walter and Beer to energies below 3.5 keV, where strong resonances are known to exist, and to explore the discrepancy in the results of the Maxwellian averaged capture cross section of /sup 87/Sr at kT = 30 keV as reported by previous investigators. 9 refs., 1 fig.
Date: June 25, 1986
Creator: Bauer, R. W.; Mathews, G. J.; Becker, J. A.; Howe, R. E. & Ward, R. A.
System: The UNT Digital Library
Inventory of Sources of Available Saline Waters for Microalgae Mass Culture in the State of Arizona (open access)

Inventory of Sources of Available Saline Waters for Microalgae Mass Culture in the State of Arizona

The Solar Energy Research Institute (SERI) is conducting research on the development of microalgae biomass systems for the production of liquid fuels. Particularly appealing at this time, is the idea of using indigenous resources of the Southwest for large-scale production of microalgae.
Date: June 25, 1986
Creator: Wilson, L. G.; Olson, K. L.; Wallace, M. G. & Osborn, M. D.
System: The UNT Digital Library
China's evolving computer industry: the role of foreign technology transfers (open access)

China's evolving computer industry: the role of foreign technology transfers

This report provides a series of assessments regarding China's strategy and objectives for computer development. It examines the specific role played by acquisition of foreign computers and related know-how by PRC.
Date: June 25, 1986
Creator: Simon, Denis F.
System: The UNT Digital Library
Texas Broilers: For Week Ending June 21, 1986 (open access)

Texas Broilers: For Week Ending June 21, 1986

Weekly report of the Texas Crop and Livestock Reporting Service on broiler chick numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks, from the week ending May 17 to the week ending June 21, during 1985 and 1986 for broiler eggs set, chicks hatched, and chicks placed.
Date: June 25, 1986
Creator: Texas Crop and Livestock Reporting Service
System: The Portal to Texas History