RESUMO
A fluorescence spectrum, excited by the synchrotron radiation of Superaco in a microwave discharge through He + SiCl(4), leads to the observation of five new electronic states of SiCl, converging to the ground X(1)Sigma(+) state of the SiCl(+) ion. The (n s varsigma) and (n p pi) Rydberg series are extended respectively to n = 6 and n = 7. A new ionization limit is observed in absorption at 11.238 eV corresponding to the a(3)Pi electronic state of SiCl(+). Four new states are observed which converge to that limit. Copyright 1999 Academic Press.
RESUMO
The absorption spectrum of a microwave discharge (2450 MHz) in flowing helium with traces of SiF4 has been recorded on the SA61 beam line of SUPERACO between 2000 and 500 Å. Two new ionization energies have been observed at 15.12 and 17.27 eV corresponding, respectively, to the A1Pi and B1Sigma+ states of SiF+. The A1Pi <-- X1Sigma+ transition of the ion has been identified for the first time on high-resolution spectra obtained in 1992 with the 35-foot Eagle spectrograph in Meudon. Copyright 1999 Academic Press.
RESUMO
The absorption spectrum of heated SnO between 2000 and 300 A has been recorded using the facilities of the SuperACO synchrotron at Orsay, France. New bands have been observed which supplement the data on the previously known systems of SnO. Newly discovered Rydberg series have confirmed the four ionization potentials observed or calculated by Dyke et al. (1982. Chem. Phys. 67, 245). Copyright 1998 Academic Press. Copyright 1998Academic Press
