Spectroscopy and metastability of the HSS- anion

International audienceAccurate ab initio calculations on the potential energy surfaces (PESs) of the lowest electronic states of the neutral HSS and those of the electronic states of the HSS- negative ion correlating to the bound asymptotes of this molecular system, reveal that the ground state of HSS- (i.e. 1A') and the long range parts of the anionic PESs are stable against the autodetachment processes. In light of these calculations, the [HS + S]- and [S2 + H]- reactive systems are examinated and found forming the HSS-( 1A') ions either directly or after spin-orbit and / or vibronic and / or Renner-Teller couplings, in competition with fast electron loss processes. The three-dimensional PES of the unique bound electronic state of HSS- (i.e. 1A') is generated using the coupled cluster approach and a large basis set. A set of spectroscopic parameters for HSS-/DSS- ( 1A') and their rovibrational spectra up to 3700 cm-1 are deduced from our 3D PES

Wavelength division multiplexing

Abstract not available

Active learning in optics and photonics: experiences in Africa

Widespread physics education research has shown that most introductory physics students have difficulty learning essential optics concepts - even in the best of traditional courses, and that well-designed active learning approaches can remedy this problem. This mini-workshop and the associated poster session will provide direct experience with methods for promoting students' active involvement in the learning process in lecture and laboratory. Participants will have hands-on experience with activities from RealTime Physics labs and Interactive Lecture Demonstrations - a learning strategy for large (and small) lectures, including specially designed Optics Magic Tricks. The poster will provide more details on these highly effective curricula