Volume 115, Issue 23, 15 December 2001
Index of content:
115(2001); http://dx.doi.org/10.1063/1.1427024View Description Hide Description
“Chiral fluctuations” are defined, and their relation to “dynamic chirality” is discussed. Simple experiments to measure chiral fluctuations are proposed. The unique aspects of these measurements for systems such as atomic clusters and gases are outlined.
Projection-reduced close coupling calculations of cross sections for vibrational relaxation in collisions of diatomic molecules with atoms115(2001); http://dx.doi.org/10.1063/1.1427025View Description Hide Description
This work investigates the possibility of performing converged close coupling calculations of cross sections for vibrational relaxation in atom–diatom collisions with basis sets reduced by neglecting states with high values of angular momentum projection. The calculations for the system show that if the molecule is initially in the state with vibrational and rotational quantum numbers it may be possible to neglect states with projections of angular momentum greater than for all rotational levels in the basis set.
115(2001); http://dx.doi.org/10.1063/1.1427704View Description Hide Description
Single walled carbon nanotubes(SWNTs) were reacted with molten lithium at 220 °C for two weeks. This induced dramatic changes in their structure as shown by x-ray and electron diffractometry and Raman spectroscopy. A significant fraction of the initial SWNTs transformed into flat nanostrips having intercalated lithium in between them. Lithium forms a superlattice commensurate with that of the graphitelike nanostrips with in-plane distribution. This new structure corresponds to the composition.