List of levels for 126SN

ADOPTED LEVELS, GAMMAS for ¹²⁶Sn

Authors: H. Iimura, J.Katakura, S. Ohya | Citation: Nucl. Data Sheets 180, 1 (2022) | Cutoff date: 1-Oct-2021

Full ENSDF file | Adopted Levels (PDF version)

Q(β-)=378 keV 30	S(n)= 8193 keV 11	S(p)= 12892 keV 11	Q(α)= -7828 keV 11
Reference: 2021Wa16

References:
A	¹²⁶In β^- decay (1.64 S)	B	¹²⁶In β^- decay (1.53 S)
C	¹²⁴Sn(t,p)	D	¹³⁰Te(d,⁶Li)
E	¹²⁴Sn(¹⁴C,¹²C)	F	¹²⁴Sn(¹³⁶Xe,xγ),(²³⁸U,xγ)
G	¹²⁷In β^-n decay (1.09 S)	H	¹²⁷In β^-n decay (3.67 S)
I	¹²⁴Sn(¹⁸O,¹⁶O)	J	⁹Be(²³⁸U,xγ)
K	Coulomb Excitation	L	²³⁸U(¹²C,Fγ)
M	²³⁸U(⁶⁴Ni,xγ)

E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
0.0	A B C D E F G H I J K L	0+	2.18×10⁺⁵ y 10 % β^- = 100
1141.15 4	A B C D E F I J K L	2+	1.13 ps 7	1141.11 5	100		0.0	0+
2049.74 6	A B C D E F J L	4+		908.58 5	100		1141.15	2+
2110.79 6	B E	2(+)		969.61 5 2110.83 10	100 7 20.8 14		1141.15 0.0	2+ 0+
2130.08 21	B E			988.93 20	100		1141.15	2+
2161.54 7	A C D E F J L	5-	10.8 ns 7	111.79 5 1020.41 10	100 9 0.66 17	E1 [E3]	2049.74 1141.15	4+ 2+
2194.21 7	B			1053.06 5	100		1141.15	2+
2218.99 8	A C D E F J L M	7-	6.1 µs 7	57.47 5	100	E2	2161.54	5-
2256.51 21	B			1115.36 20	100		1141.15	2+
2276.85 8	B			1135.70 10	100		1141.15	2+
2298 25	D
2370.46 6	B C D	2(+)		1229.31 5 2370.41 15	89 5 100 11		1141.15 0.0	2+ 0+
2373.2 4	L			211.7 4	100 4		2161.54	5-
2471.93 16	B			1330.77 15	100		1141.15	2+
2477.51 8	A	6-		258.53 5 315.93 5	79 6 100 9	M1(+E2) M1(+E2)	2218.99 2161.54	7- 5-
2488.23 9	A F J L M	(8+)		269.26 5	100		2218.99	7-
2550 25	D
2564.5 3	F J L M	(10+)	7.6 µs 2	76.3 5			2488.23	(8+)
2631.03 11	B			1489.87 10	100		1141.15	2+
2636.64 10	B	2(+)		1495.4 3 2636.30 20	100 18 100 10		1141.15 0.0	2+ 0+
2662.98 8	A D			443.94 5 501.43 5	32 3 100 8		2218.99 2161.54	7- 5-
2712.06 8	B	2,3,4+		1570.96 10	100		1141.15	2+
2720 5	C D	3-
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
2742.57 7	B			631.77 5 1601.43 10	100 6 88 6		2110.79 1141.15	2(+) 2+
2795 25	D
2840.24 10	A			362.73 5	100		2477.51	6-
2886.41 13	B			1745.15 20	100		1141.15	2+
2892 5	C D	(5-)
2971 25	D
3067.29 8	A			848.42 25 905.78 5	7.3 9 100 9		2218.99 2161.54	7- 5-
3246.55 10	B	2(+)		503.92 20 2105.31 15 3246.61 15	6.6 13 62 6 100 10		2742.57 1141.15 0.0	2+ 0+
3283.83 9	A C D M	(9-)		1064.85 5	100		2218.99	7-
3300.3 3	B			1250.52 25	100		2049.74	4+
3344.83 9	B	2(+)		1068.10 10 2203.54 15 3344.61 15	2.04 19 10.2 9 100 9		2276.85 1141.15 0.0	2+ 0+
3385 25	D
3424 5	C D	4+
3435.0 6	B	2(+)		3434.9 6	100		0.0	0+
3454.87 11	A			170.80 20 387.52 15 977.42 15 1235.95 10	7.4 15 44 4 100 11 93 8		3283.83 3067.29 2477.51 2218.99	(9-) 6- 7-
3504.5 3	B	2(+)		3504.4 3	100		0.0	0+
3595.5 3	L M	(12+)		1030.9 1	100		2564.5	(10+)
3625.79 11	A			962.66 10 1406.95 10	57 9 100 9		2662.98 2218.99	7-
3783.41 13	A C D			1564.41 10	100		2218.99	7-
3809.21 17	A			1590.21 15	100		2218.99	7-
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
3818.0 4	B	2(+)		3817.9 4	100		0.0	0+
3830.75 13	A			1611.75 10	100		2218.99	7-
3855.54 8	A	(7-,8-)		571.74 5 788.30 5 1192.53 5 1367.35 10 1377.99 5 1636.50 10	10.1 7 27.7 20 14.9 10 9.5 7 78 7 100 7		3283.83 3067.29 2662.98 2488.23 2477.51 2218.99	(9-) (8+) 6- 7-
3860.3 3	B	2,3,4+		2719.1 3	100		1141.15	2+
3886.54 9	B	2(+)		1174.32 10 2745.36 20 3886.82 15	6.6 9 20.2 21 100 11		2712.06 1141.15 0.0	2,3,4+ 2+ 0+
3917.3 5	B	2,3,4+		2776.1 5	100		1141.15	2+
3926.03 21	M	(11-)		642.2 2 1361.6 3	80 20 100 20		3283.83 2564.5	(9-) (10+)
3950.3 5	A			1731.3 5	100		2218.99	7-
3964.19 7	B	2(+)		1077.73 15 1252.34 10 1327.46 10 1593.73 10 1687.20 10 2822.9 3 3964.20 15	13.3 17 71 4 24.2 21 46 4 92 9 42 4 100 9		2886.41 2712.06 2636.64 2370.46 2276.85 1141.15 0.0	2,3,4+ 2(+) 2(+) 2+ 0+
3977.39 15	A			1314.46 15 1758.30 20	35 4 100 8		2662.98 2218.99	7-
3985 25	D
4013.97 21	B	2,3,4(+)		1643.50 20	100		2370.46	2(+)
4166.5 3	L M	(13-)	≤ 3 ns	240.5 2 571.0 1	22.0 25 100 6		3926.03 3595.5	(11-) (12+)
4184 10	C
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
4241.00 15	B	2(+)		4240.92 15	100		0.0	0+
4257.1 3	B	2(+)		4257.0 3	100		0.0	0+
4303.27 15	B	2(+)		4303.19 15	100		0.0	0+
4330.9 6	B	2(+)		4330.8 6	100		0.0	0+
4347.3 3	L M	(15-)	126 ns 20	180.8 1	100	E2	4166.5	(13-)
4447 10	C
4556 5	C	(4+,5-)
4561.0 4	M	(14-)		213.7 3	100 2		4347.3	(15-)
4583.1 5	L M	(14+)		987.6 4	100		3595.5	(12+)
4656.5 5	B	2(+)		4656.4 5	100		0.0	0+
4699.5 6	B	2(+)		4699.4 6	100		0.0	0+
4734 5	C
4767 5	C	3-
4779.16 21	A	(7-,8-,9-)		1495.4 3 2560.10 25	50 16 100 8		3283.83 2218.99	(9-) 7-
4797.1 6	B	2(+)		4797.0 6	100 9		0.0	0+
4807 5	C	3-
4838 5	C	3-
4869 5	C	3-
4935 5	C	5-
4974 5	C	5-
4990.2 3	A	(7-)		2828.6 3	100		2161.54	5-
5009 5	C	5-
5041 5	C	5-
5061.0 7	L M	(16+)	< 30 ns	477.9 4 713.7?	100 9 <7		4583.1 4347.3	(14+) (15-)
5092 5	C	5-
5160 5	C	7-
5188 5	C
5214 5	C	3-
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
5257 5	C	5-
5297 5	C	5-
5339 10	C	(4+)
5367 10	C	(4+)
5397 10	C
5436 10	C
5497.3 3	L M	(17-)		1150.0 1	100		4347.3	(15-)
5528 10	C
5587 10	C
5838.2 8	L M	(18+)		777.2 5	100		5061.0	(16+)
6258.8 4	L M	(19-)		761.5 2	100		5497.3	(17-)
7324.0 6	M			1826.7 5	100		5497.3	(17-)
8375.4 7	M			2116.6 6	100		6258.8	(19-)

E(level): From least-squares fit to Eγ’s for levels populated in γ ray studies, and from (t,p) and (d,⁶Li) for levels populated only in particle-transfer studies.

M(γ): From α(exp) in ¹²⁶In β^- decay, unless otherwise noted.

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
2161.54	5-	10.8 ns 7	111.79 5	E1	0.1323	B(E1)(W.u.)=1.57E-5 10, α=0.1323 19
2161.54	5-	10.8 ns 7	1020.41 10	[E3]	0.00256	B(E3)(W.u.)=0.60 17, α=0.00256 4
2218.99	7-	6.1 µs 7	57.47 5	E2	11.53	B(E2)(W.u.)=0.31 +4-3, α=11.53 17
2477.51	6-		258.53 5	M1(+E2)	0.050	α=0.050 8
2477.51	6-		315.93 5	M1(+E2)	0.027	α=0.027 3
4347.3	(15-)	126 ns 20	180.8 1	E2	0.198	B(E2)(W.u.)=0.52 9, α=0.198 3

E(level)	J^π(level)	T_1/2(level)	Comments
2049.74	4+		J^π(level): Cascade of E2, E1 and Mult(908.58)=[E2] γ’s connecting Jπ=7- and 2⁺ levels yields Jπ(2049.71)=4⁺ and Jπ(2161.50)=5-.
2161.54	5-	10.8 ns 7	J^π(level): Cascade of E2, E1 and Mult(908.58)=[E2] γ’s connecting Jπ=7- and 2⁺ levels yields Jπ(2049.71)=4⁺ and Jπ(2161.50)=5-.
4556	(4+,5-)		J L(t,p)=(4,5).

E(level)	E(gamma)	Comments
2564.5	76.3	E(γ): from ¹²⁴Sn(¹³⁶Xe,Xγ)
4347.3	180.8	M(γ): from α(exp)=0.25 5 by intesity imbalances (2012As05)