2 Matching Results

Search Results

Advanced search parameters have been applied.

in subjects: "Dsa Method"

open access

On the degraded effectiveness of diffusion synthetic acceleration for multidimensional sn calculations in the presence of material discontinuities

We investigate the degradation in performance of diffusion synthetic acceleration (DSA) methods in problems with discontinuities in material properties. A loss in the effectiveness of DSA schemes has been Observed before with other discretizations in two dimensions under certain conditions. We present more evidence in support of the conjecture that DSA effectiveness can degrade in multidimensional problems with discontinuities in total cross section, regardless of the particular physical config… more

Date: January 1, 2002

Creator: Warsa, J. S. (James S.); Wareing, T. A. (Todd A.) & Morel, J. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Lifetime measurements and the issue of identical superdeformed bands

Lifetime measurements for superdeformed bands in {sup 151,152}Dy and {sup 192,194}Hg have been performed at GAMMASPHERE using the Doppler shift attenuation method. The transition quadrupole moments for several bands in these nuclei have been extracted from an analysis of centroid shift data. Of particular interest are the quadrupole moments associated with the so-called `identical` superdeformed bands in these nuclei. A preliminary analysis indicates that the values of the quadrupole moments in… more

Date: 1995-12~

Creator: Moore, E. F.; Nisius, D. & Janssens, R. V. F.