NIST ASD Levels Output

Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2023). NIST Atomic Spectra Database (ver. 5.11), [Online]. Available: https://physics.nist.gov/asd [2024, April 26]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F

BibTex Citation (new window)

Configuration

Term

Level
(cm^-1)

Leading percentages

Reference

7s²

¹S

0.0000

NIST Atomic Spectra Database Levels Data Ra I 82 Levels Found Z = 88, Ra isoelectronic sequence	Example of how to reference these results: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2023). NIST Atomic Spectra Database (ver. 5.11), [Online]. Available: https://physics.nist.gov/asd [2024, April 26]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F BibTex Citation (new window)

Data on Landé factors are not available for this ion in ASD Some data for neutral and singly-charged ions are available in the Handbook of Basic Atomic Spectroscopic Data

Primary data source		Query NIST Bibliographic Database for Ra I (new window)
Dammalapati et al. 2016	Energy levels are given for the isotope ²²⁶Ra. In the column of leading percentages, alternate possible designations are given for some of the levels.	Literature on Ra I Energy Levels

Configuration	Term	J	Level (cm^-1)		Reference

7s²	¹S	0	0.0000		L19486

7s7p	³P°	0	13 078.40		L19486
		1	13 999.3569		L19486
		2	16 688.54		L19486

7s6d	³D	1	13 715.779		L19486
		2	13 993.94		L19486
		3	14 707.29		L19486

7s6d	¹D	2	17 081.31		L19486

7s7p	¹P°	1	20 715.6142		L19486

7s8s	³S	1	26 754.02		L19486

6d7p	³F°	2	28 038.00		L19486
		3	30 117.72		L19486
		4	32 367.70		L19486

6d7p	¹D°	2	30 918.01		L19486

7s8p	³P°	0	31 085.80		L19486
		1	31 563.40		L19486
		2	31 874.25		L19486

7p²?	³P	1	31 248.61	6d²	L19486
		2	32 941.20	6d²	L19486

7s7d	³D	2	31 993.40		L19486
		1	32 000.78		L19486
		3	32 197.27		L19486

7p²?	¹D	2	32 214.76	7s7d(6d²?)	L19486

6d7p	³D°	1	32 229.89		L19486
		2	32 506.52		L19486
		3	33 197.39		L19486

7s8p	¹P°	1	32 857.537		L19486

6d7p	³P°	0	33 782.32		L19486
		1	33 823.63		L19486
		2	34 382.83		L19486

7s9s	³S	1	34 475.74		L19486

7s5f	³F°	2	35 255.51		L19486
		3	35 267.88		L19486
		4	35 294.32		L19486

7s6f	³F°	3	37 922.2		L19486
		4	37 929.56		L19486

7s7f	³F°	3	39 360.9		L19486
		4	39 366.9		L19486

7s8f	³F°	2	40 219.4		L19486
		3	40 219.45		L19486
		4	40 231.5		L19486

7s13p	¹P°	1	41 034.400		L19486

7s14p	¹P°	1	41 338.940		L19486

7s15p	¹P°	1	41 562.296		L19486

7s16p	¹P°	1	41 730.580		L19486

7s17p	¹P°	1	41 860.240		L19486

7s18p	¹P°	1	41 962.281		L19486

7s19p	¹P°	1	42 043.868		L19486

7s20p	¹P°	1	42 110.347		L19486

7s21p	¹P°	1	42 164.971		L19486

7s22p	¹P°	1	42 210.520		L19486

7s23p	¹P°	1	42 248.829		L19486

7s24p	¹P°	1	42 281.383		L19486

7s25p	¹P°	1	42 309.320		L19486

7s26p	¹P°	1	42 333.335		L19486

7s27p	¹P°	1	42 354.357		L19486

7s28p	¹P°	1	42 372.773		L19486

7s29p	¹P°	1	42 388.773		L19486

7s30p	¹P°	1	42 403.096		L19486

7s31p	¹P°	1	42 415.789		L19486

7s32p	¹P°	1	42 427.050		L19486

7s33p	¹P°	1	42 437.097		L19486

7s34p	¹P°	1	42 446.203		L19486

7s35p	¹P°	1	42 454.516		L19486

7s36p	¹P°	1	42 461.863		L19486

7s37p	¹P°	1	42 468.788		L19486

7s38p	¹P°	1	42 474.917		L19486

7s39p	¹P°	1	42 480.501		L19486

7s40p	¹P°	1	42 485.662		L19486

7s41p	¹P°	1	42 490.375		L19486

7s42p	¹P°	1	42 494.765		L19486

7s43p	¹P°	1	42 498.882		L19486

7s44p	¹P°	1	42 502.575		L19486

7s45p	¹P°	1	42 506.118		L19486

7s46p	¹P°	1	42 509.288		L19486

7s47p	¹P°	1	42 512.260		L19486

7s48p	¹P°	1	42 515.131		L19486

7s49p	¹P°	1	42 517.803		L19486

7s50p	¹P°	1	42 520.125		L19486

7s51p	¹P°	1	42 522.423		L19486

7s52p	¹P°	1	42 524.473		L19486

Ra II (6p⁶7s ²S_1/2)	Limit	---	42 573.36		L4979