Polarization effects in light nuclei

Three topics are discussed. Measurement of the deuteron D state is addressed. Experimental and theoretical results for the asymptotic D- to S-state ratio of the deuteron wave function have converged to about 0.0260. This suggests that P sub D/ greater than or equal to 3.5%. The discussion on the three-nucleon system centered on the present state of agreement between experimental results and results calculated with the Faddeev equations. Polarization and analyzing power in the /sup 15/N(p,n)/sup 15/O reaction were considered. Rather large P-A differences were found in the region of 5 to 9 MeV. These differences can be nicely explained by microscopic shell-model calculations that include a noncentral nucleon-nucleon interaction and isospin mixing. 3 figures. (RWR

Nuclear chemistry. Annual report, 1974

The 1974 Nuclear Chemistry Annual Report contains information on research in the following areas: nuclear science (nuclear spectroscopy and radioactivity, nuclear reactions and scattering, nuclear theory); chemical and atomic physics (heavy ion-induced atomic reactions, atomic and molecular spectroscopy, photoelectron spectroscopy and hyperfine interactions); physical, inorganic, and analytical chemistry (x-ray crystallography, physical and inorganic chemistry, geochemistry); and instrumentation. Thesis abstracts, 1974 publication titles, and an author index are also included. Papers having a significant amount of information are listed separately by title. (RWR

Lambda^0 polarization as a probe for production of deconfined matter in ultra-relativistic heavy-ion collisions

We study the polarization change of Lambda^0's produced in ultra-relativistic heavy-ion collisions with respect to the polarization observed in proton-proton collisions as a signal for the formation of a Quark-Gluon Plasma (QGP). Assuming that, when the density of participants in the collision is larger than the critical density for QGP formation, the Lambda^0 production mechanism changes from recombination type processes to the coalescence of free valence quarks, we find that the Lambda^0 polarization depends on the relative contribution of each process to the total number of Lambda^0's produced in the collision. To describe the polarization of Lambda^0's in nuclear collisions for densities below the critical density for the QGP formation, we use the DeGrand-Miettinen model corrected for the effects introduced by multiple scattering of the produced Lambda^0 within the nuclear environment.Comment: 9 pages, 6 figures, uses ReVTeX and epsfig.st