One-electron and multi-electron transitions observed in the excitation function of the dissociative photoionization excitation of
Masashi Kitajima; Masatoshi Ukai; Shuntaro Machida; Kosei Kameta; Arno Ehresmann; Noriyuki Kouchi; Yoshihiko Hatano; Tatsuji Hayaishi; Eiji Shigemasa; Kenji Ito
Журнал:
Journal of Physics B: Atomic, Molecular and Optical Physics
Дата:
1996-05-14
Аннотация:
The excitation function of the dissociative photoionization excitation ( DIE) of has been measured with the detection technique of coincidence between photoion and a fluorescence photon emitted from an excited atom N* using extreme- UV synchrotron radiation ( SR) as an excitation source in the energy region of 35 - 65 eV. The axis of the detection system was set at two angles, parallel or perpendicular with respect to the major axis of the elliptically polarized SR, in the present measurement. The coincidence spectra obtained in this energy region show at least two qualitatively different structures originating from two different DIE processes. The major components of the DIE in the present energy region are ascribed to the dissociation of the state which is strongly coupled with correlation states in the symmetry. In addition, DIE from other precursor states in the symmetry or dissociative photo-double ionization excitation ( DDIE) was also observed.
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