Anisotropy and molecular rotation in resonant low-energy dissociative recombination.
Angular fragment distributions from the dissociative recombination (DR) of HD(+) were measured with well directed monochromatic low-energy electrons over a dense grid of collision energies from 7 to 35 meV, where pronounced rovibrational Feshbach resonances occur. Significant higher-order anisotropies are found in the distributions, whose size varies along energy in a partial correlation with the relative DR rate from fast-rotating molecules. This may indicate a breakdown of the nonrotation assumption so far applied to predict angular DR fragment distributions.
Novotny
S
S
Max-Planck-Institut für Kernphysik, Heidelberg, Germany.
Rubinstein
H
H
Buhr
H
H
Novotný
O
O
Hoffmann
J
J
Mendes
M B
MB
Orlov
D A
DA
Krantz
C
C
Berg
M H
MH
Froese
M
M
Jaroshevich
A S
AS
Jordon-Thaden
B
B
Lange
M
M
Lestinsky
M
M
Petrignani
A
A
Shafir
D
D
Zajfman
D
D
Schwalm
D
D
Wolf
A
A