SULFUR IX TO XIII SPECTRAL MEASURMENTS BETWEEN 170 AND 500 Å

This paper reports laboratory measurements of the spectrum of highly ionized sulfur. The spectrum of S IX - S XIII has been observed in the wavelength range 170 - 500 angstrom. A total of 54 lines have been measured. Forty-two of them have been classified as 2s(2)2p(k)-2s(2)p(k+) 1 and 2s2p(k)-2p(k+1) transitions. Twelve other lines have been ascribed to 2s-2p, 4p-5s, 5p6s, 5d-6p, and 6p-8d transitions. These spectral lines have been identified, among which 22 are new and accurately measured. The analysis of the spectra was based on a comparison with other experimental results and calculated values.