[Description in the journal format]
The cover of issue 9 shows an artist’s view of the s&p model
treatment of negative-ion photodetachment. The electron waves shown are
responsible for the angular anisotropy of the photoelectron images, which
are depicted as islands floating among water waves. The first of the
three photoelectron images (islands) corresponds to 400 nm photodetachment
of S2–, while the second and third are obtained in 267 and 800 nm
detachment from CS2–, respectively. The molecular orbitals (shown in
different lab-frame orientations) on the right are the a1 HOMO, b2 (HOMO –
1) and a2 (HOMO – 2) of the anion. The s and p orbitals on the left
represent the s&p-wave expansion of the free (photodetached) electron
formed via the a1–1, b2–1, and a2–1 photodetachment channels (laser
polarization is assumed vertical). The corresponding photodetachment bands
can be seen in the middle photoelectron image below.
Image kindly supplied by A. Sanov, Department of Chemistry, University
of Arizona, Tucson, AZ, USA.
Cluster anions: Structure, interactions, and dynamics in the
Andrei Sanov and W. Carl Lineberger
Phys. Chem. Chem. Phys. 6, 2018-2032 (2004).