Table 1.

Energies of levels and transitions in ²²⁴Rn and ²²⁶Rn

224Rn Elevel (keV)	${\mathit{I}}_{\mathit{i}}^{\mathit{\pi }}$	Eγ (keV)	${\mathit{I}}_{\mathit{f}}^{\mathit{\pi }}$
135.6 (5)	2+	135.6 (5)	0+
357.6 (6)	4+	222.0 (5)	2+
641.4 (8)	6+	283.8 (5)	4+
650.6 (8)	(3−)	515.0 (6)	2+
790.8 (8)	(5−)	433.2 (5)	4+
969.2 (9)	8+	327.8 (5)	6+
1006.4 (10)	(7-)	365.0 (5)	6+
1277.2 (10)	(9-)	308.0 (5)	8+
1327.8 (10)	10+	358.6 (5)	8+
1706.8 (11)	(12+)	379.1 (5)	10+

226Rn Elevel (keV)	${\mathit{I}}_{\mathit{i}}^{\mathit{\pi }}$	Eγ (keV)	${\mathit{I}}_{\mathit{f}}^{\mathit{\pi }}$
96.0 (11)	2+	96.0 (11)	0+
278.9 (12)	4+	182.9 (5)	2+
527.9 (13)	6+	249.0 (5)	4+
828.6 (14)	8+	300.7 (5)	6+
864 (2)	(5-)	585.4 (18)	4+
1170.8 (14)	10+	342.1 (5)	8+
1545.4 (15)	12+	374.6 (5)	10+

The 1-σ errors are given, estimated from the statistical error and the uncertainty in the energy calibration and Doppler correction