title: Decay channel dependence of the photoelectron angular distributions in core-level ionization of Ne dimers.
abstract: For K-shell photoionization of neon dimers, we report Ne 1s photoelectron angular distributions for Ne2++Ne+ and Ne++Ne+ channels exhibiting quite different patterns. Noninversion-symmetric patterns of the former obtained by the fast interatomic Coulombic decay of Auger final states show direct evidence of core-hole localization. Dipolar patterns of the latter obtained by the slow radiative decay of the other Auger final states clearly show that the radiative process is slow enough to allow dicationic dimers to rotate many times before fragmentation.
authors.affiliation: Photon Factory, Institute of Materials Structure Science, KEK, Oho 1-1, Tsukuba 305-0801, Japan.
authors.forename: Masakazu
authors.initials: M
authors.lastname: Yamazaki
authors.forename: Jun-ichi
authors.initials: J
authors.lastname: Adachi
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Kimura
authors.forename: Akira
authors.initials: A
authors.lastname: Yagishita
authors.forename: Mauro
authors.initials: M
authors.lastname: Stener
authors.forename: Piero
authors.initials: P
authors.lastname: Decleva
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Kosugi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Iwayama
authors.forename: Kiyonobu
authors.initials: K
authors.lastname: Nagaya
authors.forename: Makoto
authors.initials: M
authors.lastname: Yao