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Figure 4
(a) Time-of-flight mass spectra of molecular-ion fragments produced by Si K-photoionization of SiH4. Ions are dominantly bare silicon without traces of hydrogen bonded to Si. Satellites observed at higher mass sides are due to Si isotopes (Shigemasa et al., 1990BB20). (b) Angular distributions of K-shell photoelectrons against the molecular axis (angle 0°) of nitrogen at the shape resonance, 419 eV, with the final-state symmetry (i) parallel and (ii) perpendicular to the axis. The final state (i) shows dominantly f-symmetry, whereas (ii) has p + d character, supporting the theory of shape resonance (Shigemasa et al., 1996BB21).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 5| Part 3| May 1998| Pages 140-146
https://doi.org/10.1107/S0909049598003070
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