Masashi Kitajima et al 1996 J. Phys. B: At. Mol. Opt. Phys. 29 1711 doi:10.1088/0953-4075/29/9/017
Masashi Kitajima
, Masatoshi Ukai
, Shuntaro Machida
, Kosei Kameta
, Arno Ehresmann
, Noriyuki Kouchi
, Yoshihiko Hatano
, Tatsuji Hayaishi§, Eiji Shigemasa|| and Kenji Ito||
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.
33.80.Eh Autoionization, photoionization, and photodetachment
33.50.Dq Fluorescence and phosphorescence spectra
33.80.Gj Diffuse spectra; predissociation, photodissociation
Issue 9 (14 May 1996)
Received 30 October 1995, in final form 2 February 1996
Masashi Kitajima et al 1996 J. Phys. B: At. Mol. Opt. Phys. 29 1711
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