Examination of the low-lying states of samarium monoxide

The gas-phase chemiionization reaction between samarium and oxygen atoms: A theoretical study

“…We will thus only compare the computed relative energies of the lowest spin states at the equilibrium bond length with the experimental values. [29][30][31] The spin-orbit ground state is doubly degenerate according to our calculation, and thus it cannot be a state with ⍀ϭ0. This is not in agreement with the assignment of Linton et al, 29 who identified the ground state as an ⍀ϭ0 state.…”

“…[29][30][31] The spin-orbit ground state is doubly degenerate according to our calculation, and thus it cannot be a state with ⍀ϭ0. This is not in agreement with the assignment of Linton et al, 29 who identified the ground state as an ⍀ϭ0 state. Our calculated first excited state lies 202 cm Ϫ1 above the ground state and it is assigned to the ⍀ϭ1 level at 150 cm Ϫ1 reported by Linton.…”

“…Our calculated first excited state lies 202 cm Ϫ1 above the ground state and it is assigned to the ⍀ϭ1 level at 150 cm Ϫ1 reported by Linton. 29 We then compute a state at 217 cm Ϫ1 , which is not seen experimentally. Further states are calculated at 550, 558, and 1013 cm Ϫ1 , and these are assigned to the 565, 580, and 880 cm Ϫ1 experimental excitation energies, respectively.…”

A physics‐based model for the ionization of samarium by the MOSC chemical releases in the upper atmosphere

“…The visible luminescence spectrum of samarium oxide has been measured with reactions in the laboratory [Dickson and Zare, 1975] and with laser spectroscopic experiments [Hannigan, 1983;Linton et al, 1987;Bujin and Linton, 1989]. Electronic, vibrational, and rotational constants for energy levels of SmO are given in Table 3 [Linton et al, 1987;Bujin and Linton, 1989;Bujin and Linton, 1991]. Radiative transitions between each of the 11 higher-energy levels and the 15 lower energy levels produce a possible 165 emission wavelengths in the 540 to 800 nm range ( Figure 13a).…”

“…The bold values are the strongest lines. The italic values have been observed with laser-induced fluorescence [Linton et al, 1987;Bujin and Linton, 1991]. Table A2.…”