排序方式: 共有4条查询结果,搜索用时 0 毫秒
1
1.
2.
3.
L. Gonzalez-Sanchez M. Tacconi E. Bodo F. A. Gianturco 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2008,49(1):85-92
A newly computed potential energy surface, which describes the forces at play between the OH− (X
1Σ+) anionic molecule (treated as a rigid rotor at its equilibrium geometry) and the Rb(2S) atomic gas was obtained from fully ab initio methods, yielding highly correlated electronic wavefunctions for the interacting
partners. It is in turn employed to calculate their rotationally quenching collision cross sections at ultralow energies and
for different initial rotational states of the molecular anion. The results suggest that these strongly interacting partners
are among the most efficient systems in providing very large internal de-excitation rates whenever the collision regime of
an ultracold trap can occur for the partners. The collision encounters at such vanishing values of translational energies
are seen to be strongly controlled by the behaviour of the real part of the scattering length as a function of the initial
rotational state: the latter indicates, in fact, the presence of several virtual states close to the dissociation threshold
of the complex. 相似文献
4.
L. Gonzalez-Sanchez E. Bodo E. Yurtsever F. A. Gianturco 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2008,48(1):75-82
Rotationally superelastic collisions are computed from quantum
dynamical calculations for the two title systems, down to the very
low collision energies of interest in cold trap experiments. The
results are obtained via ab initio interaction potentials, the one
for the MgH-He system being given here for the first time and
discussed in details in the present paper.
The calculations show marked differences in behaviour for both
cooling efficiency rates at vanishing temperatures and individual
cross sections between levels, and their origin is related to target
structural properties and with specific features of the two
potentials. 相似文献
1