The emission spectrum of curium

Abstract

This ~cument contains iilf6t:~~tion affectin~-~~~-~\ National Defense of the Uri-~t.~,~;States.

Investigation of the atomic structure of curium and determination of its first ionization potential

“…Peak 3 was assigned to a FES at 25580.02cm −1 with the electron configuration 5f 7 6d7s7p, J = 5, starting from the low-lying level of 5f 7 6d7s 2 9 D o 4 at 815.655cm −1 [22]. The few remaining very narrow peaks could be further FES, but were not listed in the tables [13,22] and thus were not investigated further. The AI used for scheme A is highlighted with a yellow box and is the strongest AI level in the entire scan range.…”

“…The literature value of the IP with 48324(2)cm −1 [15] is marked by a purple solid line. The dashed lines indicate FES starting not from the GS but from different initial states [13] tion of curium. Further detailed characterizations with respect to the saturation behavior, the elemental selectivity or the absolute ionization efficiency of the individual excitation schemes have not been performed so far.…”

“…In the curium atom (Cm I), Worden et al spectroscopically identified more than 13 000 lines, which they assigned to 335 odd and 348 even parity levels pointing out its enormous atomic level density and the resulting complexity of the curium atomic structure [12,13]. They used 2mg of 244 Cm (T 1/2 = 18.10y) and performed the measurement at the large 9.15m Paschen Runge spectrograph of Argonne National Laboratory.…”