Dissociative ionization and angular distributions of CS<sub>2</sub> and its ions
9th International Symposium on Resonance Ionization Spectroscopy (RIS-98), Manchester, İngiltere, 21 - 25 Haziran 1998, cilt.454, ss.341-344, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Cilt numarası: 454
- Basıldığı Şehir: Manchester
- Basıldığı Ülke: İngiltere
- Sayfa Sayıları: ss.341-344
- Dokuz Eylül Üniversitesi Adresli: Hayır
Özet
The dissociative ionization of CS2 has been investigated at several different wavelengths (375, 750, 395, and 790nm), for pulse-widths as short as 50fs, and laser intensities in the range of (2.2 x 10(13) - 3 x 10(16)) W/cm(2). It is found from the various mass spectra that fragmentation is relatively more pronounced at shorter wavelengths, whilst at longer wavelengths, the parent dominates. Another interesting feature, occurring in the data and literature, is the presence of an S-2(+) ion at wavelengths less than about 532nm, and near total absence at wavelengths longer than this. Angular distributions are presented for both 395 and 790nm. Sn+-ions fragment along the polarization direction, while the Cn+-ions fragment perpendicularly to it, providing a way of distinguishing the different fragments produced in the coulomb explosion process. Finally, distribution widths decrease with higher charge states of the ions, Implying that they are more aligned with the field.