List of levels for 162GD

ADOPTED LEVELS, GAMMAS for ¹⁶²Gd

Author: N. Nica | Citation: Nucl. Data Sheets 195, 1 (2024) | Cutoff date: 19-Sep-2023

Full ENSDF file | Adopted Levels (PDF version)

Q(β-)=1599 keV 4	S(n)= 6846 keV 4	S(p)= 9778 keV 11	Q(α)= -1454 keV 6
Reference: 2021WA16

References:
A	¹⁶²Eu β^- decay: MIXED SOURCE	B	¹⁶⁰Gd(t,p)
C	²⁵²Cf SF decay

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	0+	8.4 m 2 % β^- = 100
71.54 15	A B C	(2+)	2.76 ns 6	71.55 15	100	[E2]	0.0	0+
236.53 16	A B C	(4+)		165.00 5	100		71.54	(2+)
490.09 16	A B C	(6+)		253.55 5	100		236.53	(4+)
826.29 17	A C	(8+)		336.20 5	100		490.09	(6+)
863.0 3	A B	2+		791.4 5 862.9 5	100 11 82 4		71.54 0.0	(2+) 0+
927.36 24	A B	(3+)		64.4 2 ? 691.4 4 855.7 5	<3.5 17.9 14 100 10		863.0 236.53 71.54	2+ (4+) (2+)
1012.7 3	A B	(4+)		776.5 5 940.7 5	100 9 13 4		236.53 71.54	(4+) (2+)
1118.66 25	A	(5+)		191.4 2 628.4 4 881.9 5	2.3 5 21.1 16 100 5		927.36 490.09 236.53	(3+) (6+) (4+)
1238.0 11	C	(10+)		411.7	100		826.29	(8+)
1243.5 3	A	(6+)		125 1 230.7 3 753.7 5 1007.1 10	<5.0 8.0 10 100 10 75 6		1118.66 1012.7 490.09 236.53	(5+) (4+) (6+) (4+)
1354.1 3	A	(4+)		341.9 3 426.5 3 491.0 3	10.8 15 41.5 23 100 15		1012.7 927.36 863.0	(4+) (3+) 2+
1388.6 4	A	(7+)		270.0 3 898.2 5	20 6 100 12		1118.66 490.09	(5+) (6+)
1427.6 11	A B	0+		1356.1 10	100		71.54	(2+)
1448.6 3	A	(6-)	99 µs 5	205.2 2 329.9 3	21.2 12 100 5	[E1] [E1]	1243.5 1118.66	(6+) (5+)
1456.7 3	A B	(5+)		102.7 2 443.4 3 529.8 4	100 23 35 8 77 15		1354.1 1012.7 927.36	(4+) (4+) (3+)
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
1493.1 7	A B	(2+)		1256.6 10	100		236.53	(4+)
1519.7 4	A			71.1 2	100		1448.6	(6-)
1579.0 4	A	(6+)		122.2 2	100		1456.7	(5+)
1581.5 4	A	(7-)		133.1 2	100		1448.6	(6-)
1645.3 6	A B	(4+)		152.2 2 1408.8 10	1.0E2 10 <6.0E2		1493.1 236.53	(2+) (4+)
1701.0 11	A B	0+		838 1	100		863.0	2+
1714.6 4	A			133.1 2	100		1581.5	(7-)
1718.7 15	C	(12+)		480.7	100		1238.0	(10+)
1720.8 4	A	(7+)		141.6 2 264.5 3	100 40 65 18		1579.0 1456.7	(6+) (5+)
1733.3 4	A	(8-)		152.1 2 284.0 3	100 15 62 15		1581.5 1448.6	(7-) (6-)
1749 7	B
1781.0 11	A	(2+)		918 1	100		863.0	2+
1898.0 7	A	(6+)		252.7 3 1407.9 10 1661.5 10 ?	<100 <100 <83		1645.3 490.09 236.53	(4+) (6+) (4+)
1975.4 5	A			526.8 4	100		1448.6	(6-)
2014.5 11	A			1778 1	100		236.53	(4+)
2030.5 11	A			1794 1	100		236.53	(4+)
2148?	A			2148 1 ?	100		0.0	0+
2163 7	B
2260.3 18	C	(14+)		541.6	100		1718.7	(12+)
2304.6 11	A			2233 1	100		71.54	(2+)
2321.3 13 ?	A			874 1 ?	100		1448.6	(6-)
2337.0 6	A			755.5 5	100		1581.5	(7-)
2346 7	B
2413.6 11	A			2342 1	100		71.54	(2+)
2417.6 11	A			2346 1	100		71.54	(2+)
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
2432 7	B
2464 7	B
2590.6 11	A			2354 1	100		236.53	(4+)
2655.1 11	A			2165 1	100		490.09	(6+)
2857.2 20	C	(16+)		596.9	100		2260.3	(14+)
3423.6 11	A			3187 1	100		236.53	(4+)
3510.6 11	A			3274 1	100		236.53	(4+)
3572.6 11	A			3501 1	100		71.54	(2+)
3596.2 8	A			2770 1 3106 1	41 12 100 27		826.29 490.09	(8+) (6+)
3660.3 8	A			1339 1 3170 1 3424 1	<48 100 29 49 19		2321.3 490.09 236.53	(6+) (4+)

E(level): From a least-squares fit to Eγ data

J^π(level): Assignments are based on those given in 1986Lo15 from the ¹⁶⁰Gd(t,p) reaction and 2004Jo17 from the ²⁵²Cf SF decay, on top of which 2021Wa04 assigned Jπ values in the newest ¹⁶²Eu β^- decay dataset based on band structures, assigned configurations and other theoretical arguments. The L=0 (and L=2) angular distributions uniquely define the levels with Jπ=0⁺ (and 2⁺, respectively) seen in (t,p), while the other members of the ground-state band are assigned from the energy spacings and the (t,p) populations. The γ-vibrational band assignments are based on comparison with the (t,p) results for the well-known levels in ¹⁶⁰Gd. The assignments from the SF decay are based largely on the structure expected for the g.s. band in a strongly deformed nucleus in this mass region. Most assignments are made tentative by the evalutor.

E(γ): Unless mentioned otherwise values from ¹⁶²Eu β^- decay

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 1 - K^π = 0⁺ ground-state band.
0.0	0+	8.4 m 2 % β^- = 100
71.54 15	(2+)	2.76 ns 6	71.55 15	100	[E2]	0.0	0+
236.53 16	(4+)		165.00 5	100		71.54	(2+)
490.09 16	(6+)		253.55 5	100		236.53	(4+)
826.29 17	(8+)		336.20 5	100		490.09	(6+)
1238.0 11	(10+)		411.7	100		826.29	(8+)
1718.7 15	(12+)		480.7	100		1238.0	(10+)
2260.3 18	(14+)		541.6	100		1718.7	(12+)
2857.2 20	(16+)		596.9	100		2260.3	(14+)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 2 - K^π = 2⁺ γ-vibrational band.
863.0 3	2+
927.36 24	(3+)		64.4 2 ? 691.4 4 855.7 5	<3.5 17.9 14 100 10		863.0 236.53 71.54	2+ (4+) (2+)
1012.7 3	(4+)		776.5 5 940.7 5	100 9 13 4		236.53 71.54	(4+) (2+)
1118.66 25	(5+)		191.4 2 628.4 4 881.9 5	2.3 5 21.1 16 100 5		927.36 490.09 236.53	(3+) (6+) (4+)
1243.5 3	(6+)		125 1 230.7 3 753.7 5 1007.1 10	<5.0 8.0 10 100 10 75 6		1118.66 1012.7 490.09 236.53	(5+) (4+) (6+) (4+)
1388.6 4	(7+)		270.0 3 898.2 5	20 6 100 12		1118.66 490.09	(5+) (6+)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 3 - K^π = (6-) band.
1448.6 3	(6-)	99 µs 5
1581.5 4	(7-)		133.1 2	100		1448.6	(6-)
1733.3 4	(8-)		152.1 2 284.0 3	100 15 62 15		1581.5 1448.6	(7-) (6-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 4 - K^π = 0⁺ β-vibrational band.
1427.6 11	0+
1493.1 7	(2+)		1256.6 10	100		236.53	(4+)
1645.3 6	(4+)		152.2 2 1408.8 10	1.0E2 10 <6.0E2		1493.1 236.53	(2+) (4+)
1898.0 7	(6+)		252.7 3 1407.9 10 1661.5 10 ?	<100 <100 <83		1645.3 490.09 236.53	(4+) (6+) (4+)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 5 - K^π = (4⁺) band.
1354.1 3	(4+)
1456.7 3	(5+)		102.7 2 443.4 3 529.8 4	100 23 35 8 77 15		1354.1 1012.7 927.36	(4+) (4+) (3+)
1579.0 4	(6+)		122.2 2	100		1456.7	(5+)
1720.8 4	(7+)		141.6 2 264.5 3	100 40 65 18		1579.0 1456.7	(6+) (5+)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 6 - K^π = Second 0⁺ band.
1701.0 11	0+
1781.0 11	(2+)		918 1	100		863.0	2+

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Conversion Coefficient	Additional Data
71.54	(2+)	2.76 ns 6	71.55 15	[E2]	8.92	B(E2)(W.u.)=210 6, α=8.92 14, α(K)=2.48 4, α(L)=4.97 9, α(M)=1.176 20, α(N)=0.262 5, α(O)=0.0339 6, α(P)=0.0001255 18
1448.6	(6-)	99 µs 5	205.2 2	[E1]	0.0424	B(E1)(W.u.)=4.57E-11 +39-36, α=0.0424 6, α(K)=0.0359 5, α(L)=0.00509 7, α(M)=0.001099 16, α(N)=0.000250 4, α(O)=3.77E-5 5, α(P)=2.206E-6 31
1448.6	(6-)	99 µs 5	329.9 3	[E1]	0.01258	B(E1)(W.u.)=5.19E-11 +29-27, α=0.01258 18, α(K)=0.01070 15, α(L)=0.001474 21, α(M)=0.000318 5, α(N)=7.27E-5 10, α(O)=1.107E-5 16, α(P)=6.86E-7 10

E(level)	J^π(level)	T_1/2(level)	Comments
0.0	0+	8.4 m 2 % β^- = 100	E(level): K^π = 0⁺ ground-state band. J^π(level): L=0 in the (t,p) reaction (1986Lo15).
71.54	(2+)	2.76 ns 6	E(level): K^π = 0⁺ ground-state band.
236.53	(4+)		E(level): K^π = 0⁺ ground-state band.
490.09	(6+)		E(level): K^π = 0⁺ ground-state band.
826.29	(8+)		E(level): K^π = 0⁺ ground-state band.
863.0	2+		E(level): K^π = 2⁺ γ-vibrational band. J^π(level): L=2 in the (t,p) reaction (1986Lo15).
927.36	(3+)		E(level): K^π = 2⁺ γ-vibrational band.
1012.7	(4+)		E(level): K^π = 2⁺ γ-vibrational band.
1118.66	(5+)		E(level): K^π = 2⁺ γ-vibrational band.
1238.0	(10+)		E(level): K^π = 0⁺ ground-state band.
1243.5	(6+)		E(level): K^π = 2⁺ γ-vibrational band.
1354.1	(4+)		E(level): K^π = (4⁺) band.
1388.6	(7+)		E(level): K^π = 2⁺ γ-vibrational band.
1427.6	0+		E(level): K^π = 0⁺ β-vibrational band. J^π(level): L=0 in the (t,p) reaction (1986Lo15).
1448.6	(6-)	99 µs 5	E(level): K^π = (6-) band.
1456.7	(5+)		E(level): K^π = (4⁺) band.
1493.1	(2+)		E(level): K^π = 0⁺ β-vibrational band.
1579.0	(6+)		E(level): K^π = (4⁺) band.
1581.5	(7-)		E(level): K^π = (6-) band.
1645.3	(4+)		E(level): K^π = 0⁺ β-vibrational band.
1701.0	0+		E(level): K^π = Second 0⁺ band. J^π(level): L=0 in the (t,p) reaction (1986Lo15).
1718.7	(12+)		E(level): K^π = 0⁺ ground-state band.
1720.8	(7+)		E(level): K^π = (4⁺) band.
1733.3	(8-)		E(level): K^π = (6-) band.
1781.0	(2+)		E(level): K^π = Second 0⁺ band.
E(level)	J^π(level)	T_1/2(level)	Comments
1898.0	(6+)		E(level): K^π = 0⁺ β-vibrational band.
2260.3	(14+)		E(level): K^π = 0⁺ ground-state band.
2857.2	(16+)		E(level): K^π = 0⁺ ground-state band.

E(level)	E(gamma)	Comments
71.54	71.55	E(γ): from 2020Ur03
236.53	165.00	E(γ): from 2020Ur03
490.09	253.55	E(γ): from 2020Ur03
826.29	336.20	E(γ): from 2020Ur03