The Hyperfine Structure Calculations οf Some Excited Levels for139La I

Calculations of Transition Probabilities for Some Excited Levels of Na I

Transition probabilities are calculated for individual and multiplet lines between some excited states in neutral sodium by using the weakest bound electron potential model theory. In the determination of parameters required for calculation of transition probabilities, we employed numerical non-relativistic Hartree–Fock wave functions for expectation values of radii in all levels. The necessary...

Hyperfine Structure of Rotation-Inversion Levels in the Excited nu2 State of Ammonia

Hyperfine structures of the rotation-inversion transitions with J = 3 <-- 2, s <-- a, and K = 0, 1, 2, and with J = 0 <-- 1, a <-- s, and K = 0 in the excited nu2 vibrational state have been resolved and measured by sub-Doppler saturation spectroscopy using the Cologne terahertz spectrometer with an accuracy of about 1 kHz. The line frequencies of the hyperfine structures of the rotation invers...

On Hyperfine and Fine Structure of Excited Charge-Transfer-Complexes

The charge-transfer (CT)-crystal naphthalene (N)-1,2,4,5-tetracyanobenzene (TCNB) was doped with various guest acceptors. CT-complexes of these acceptors with N are formed acting as a triplet energy trap in the crystal. This provides a method to investigate oriented CT-complexes ESR-spectroscopically. In favorable cases the hyperfine structure (Hfs) in the ESR-spectra can be resolved and interp...

Relativistic calculations of pionic and kaonic atoms hyperfine structure

Radiative - lifetime measurements and calculations of odd - parity highly excited levels in Ba I

Wei Zhang,1,2 Patrick Palmeri,3 Pascal Quinet,3,4 Émile Biémont,3,4,* Shan Du,1,2 and Zhenwen Dai1,2,5,† 1College of Physics, Jilin University, Changchun 130021, China 2Key Lab of Coherent Light, Atomic and Molecular Spectroscopy, Ministry of Education, Changchun 130021, China 3Astrophysique et Spectroscopie, Université de Mons, B-7000 Mons, Belgium 4IPNAS (Bât. B15), Université de Liège, Sart ...