Volume 126, Issue 12, 28 March 2007
Index of content:
Overlapping resonances and Regge oscillations in the state-to-state integral cross sections of the reaction126(2007); http://dx.doi.org/10.1063/1.2718947View Description Hide Description
A Regge pole analysis is employed to explain the oscillatory patterns observed in numerical simulations of integral cross section for the reaction in the translational collision energy range . In this range the integral cross section for the transition, affected by two overlapping resonances, shows nearly sinusoidal oscillations below and a more structured oscillatory pattern at larger energies. The two types of oscillations are related to the two Regge trajectories which (pseudo) cross near the energy where the resonances are aligned. Simple estimates are given for the periods of the oscillations.
126(2007); http://dx.doi.org/10.1063/1.2719690View Description Hide Description
The authors develop an efficient particle labeling procedure based on a linked cell algorithm which is shown to reduce the computing time for a molecular dynamics simulation by a factor of 3. They prove that the improvement of performance is due to the efficient fulfillment of both spatial and temporal locality principles, as implemented by the contiguity of labels corresponding to interacting atoms. Finally, they show that the present label reordering procedure can be used to devise an efficient parallel one-dimensional domain decomposition molecular dynamics scheme.