https://doi.org/10.1007/s100530050094
Quantum and semiclassical dynamics of differential optical collisions
1
Max-Planck-Institut für Quantenoptik, 85740 Garching, Germany
2
Institut für Atom- und Molekülphysik, Universität Hannover,
30167 Hannover, Germany
Received:
30
July
1997
Revised:
5
November
1997
Accepted:
8
January
1998
Published online: 15 March 1998
We apply quantum and semiclassical theories to
differential optical collisions
Na(32S1/2) + Kr +
Na(32P
)
+ Kr.
Our results provide a basis to analyze recent experiments
in which for the first time optical collisions were investigated
with angular resolution under crossed-beam conditions.
A characteristic feature of the differential cross sections
is the pronounced oscillatory structure due to interferences
of different Condon paths. These Stueckelberg oscillations
form an extremely sensitive probe of the collisional dynamics
and of the molecular interactions.
We demonstrate perspectives
to determine geometric properties of the collision
complex by excitation with polarized light.
By final state analysis
nonadiabatic (spin-orbit, rotational) interactions can be studied
with complete control of the path.
In summary it is shown that
the method of differential detection of optical collisions
opens a variety of new accesses to
atomic and molecular subcollisions.
PACS: 32.70.-n – Intensities and shapes of atomic spectral lines / 34.20.Cf – Interatomic potentials and forces / 34.50.Rk – Laser modified scattering and reactions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998