CT Findings of Parotid Gland Tumors: Benign versus Malignant Tumors

Investigation of highly excited states of samarium

“…The superscripts ("a-i") in the table denote levels that were previously observed in [6][7][8][9][10][11][12][13][14][15][16]. Comparison of the energy values measured in this work with the data of other authors shows that they are in good agreement with each other.…”

“…In particular, some maxima related to the excitation of the states known from the literature [9][10][11] and originating from this level could not be detected at any level of the laser radiation intensity. For this reason, during identifica tion of the resonance structure related to transitions from the level 7 F 0 , we applied the same rules as for transitions from the levels 7 F 5 and 7 F 6 .…”

“…Of these, 200 states were identified by using the aforementioned technique based on the observation of groups consisting of three to five max ima. The other 142 states are those that were observed in [9][10][11][12][13][14][15][16]. Only one (52 states) or two (90 states) max ima in the N + (ω) dependence correspond to the exci tation of these states.…”

“…As many as 32 states could have been identified in the above work by using the technique of combining max ima in groups of three and more maxima, while the other 39 states could have been identified by coinci dence of the frequencies calculated from the known energies of these states [9][10][11][12] with the frequencies of the experimentally measured maxima. These states have not been detected in [8] due to the small ampli tude of the corresponding resonance maxima.…”

“…The development of lasers enabled application of methods of multistep laser spectroscopy to studying higher lying states [4], which allowed obtaining exten sive data on highly excited even parity states of samar ium [5][6][7][8][9][10][11][12][13][14][15][16]. However, despite the large number of experimental studies carried out thus far, these data are still far from being complete.…”