List of levels for 161ER

Author: C. W. Reich | Citation: Nucl. Data Sheets 112,2497 (2011) | Cutoff date: 1-Jun-2011

Data are primarily from ¹⁶¹Tm ε decay and in-beam studies with additions from (d,t) study and ¹⁶¹Er IT decay (7.5 μs).

Levels: Calculations of mixing of the wave functions for first few levels of rotational bands are given by 1995Dz02. For the levels assigned here, the calculated wave functions are all quite pure (i.e., |> 90% the assigned state).

Levels: band(a) 3/2[521] band, α=+1/2. See the comment for the α=-1/2 branch.

Levels: band(c) Coriolis-mixed +π band, α=-1/2.

Levels: band(e) 11/2[505] band, α=+1/2.

Q-value: Note: Current evaluation has used the following Q record $ -3310 24 7222 27 6110 18 1794 11 2009AuZZ

Q-value: 2003Au03 report the following: for Q(β^-), 3310 29; for S(n), 7222 26; for S(p), 6110 18; and, for Q(α), 1794 11.

E(level): From least-squares fit to γ-ray energies or from (d,t) study for levels below 6100 keV and from reported level energies above 6600 keV.

J^π(level): Jπ and band assignments are based on γ multipolarities from ¹⁶¹Tm ε decay and from γ-ray anisotropy ratios in heavy-ion recation studies, agreement of experimental and calculated cross sections from (d,t), and expected rotational-band structure in in-beam studies.

I(γ): In their heavy-ion study, 2011Ch12 place special emphasis on measurement of the E1/E2 branching ratios from selected levels. These are the values listed here. The values obtained from their γ spectrum are also listed for comparison with these specifically measured ones.

M(γ): For levels below 400 keV, multipolarities of the γ rays are from ce data from ¹⁶¹Tm ε decay (both 1975Ad08 and 1980Ab18). For levels above 400 keV, multipolarities are generally from the γ-ray anisotropy-ratio (R_ADO) data of 2011Ch12 from a heavy-ion study.

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Mixing Ratio	Conversion Coefficient	Additional Data
59.501	5/2-	≤ 0.15 ns	59.51 3	M1+E2	0.14	12.82	B(E2)(W.u.)>1.3×10², B(M1)(W.u.)>0.048, α=12.82
143.89	7/2-	≤ 0.18 ns	84.40 3	M1+E2	0.23	4.69	B(E2)(W.u.)>1.1×10², B(M1)(W.u.)>0.029, α=4.69
143.89	7/2-	≤ 0.18 ns	143.92 8	E2		0.779	B(E2)(W.u.)>60, α=0.779
172.06	5/2-	0.35 ns 10	28.18 3	M1+E2	0.08	24.1	B(E2)(W.u.)=19 7, B(M1)(W.u.)=0.0047 17, α=24.1
	5/2-	0.35 ns 10	112.56 3	M1+E2	0.14	2.03	B(E2)(W.u.)=5.6 17, B(M1)(W.u.)=0.0073 23, α=2.03
	5/2-	0.35 ns 10	172.05 6	M1+E2	0.18	0.605	B(E2)(W.u.)=1.8 6, B(M1)(W.u.)=0.0033 11, α=0.605
189.42	9/2+	84 ns 10	45.54 3	E1		0.495	B(E1)(W.u.)=1.93E-5 23, α=0.495
212.91	5/2+	0.81 ns 6	23.49 2	E2		2.11×10³	B(E2)(W.u.)=4.0×10² 9, α=2.11E3
	5/2+	0.81 ns 6	40.86 3	E1		0.670	B(E1)(W.u.)=0.00017E-4 3, α=0.670
	5/2+	0.81 ns 6	69.00 10	[E1]		0.860	B(E1)(W.u.)=2.0E-5 5, α=0.860
	5/2+	0.81 ns 6	153.37 8	E1		0.1045	B(E1)(W.u.)=1.57E-5 23, α=0.1045
	5/2+	0.81 ns 6	212.88 8	E1		0.0442	B(E1)(W.u.)=6.2E-6 10, α=0.0442
217.34	7/2+	0.55 ns 5	27.92 3	M1+E2	0.10	28.0	B(E2)(W.u.)=3.4×10² 15, B(M1)(W.u.)=0.053 24, α=28.0
	7/2+	0.55 ns 5	73.48 3	E1		0.731	B(E1)(W.u.)=1.1E-5 5, α=0.731
	7/2+	0.55 ns 5	157.80 8	E1		0.0969	B(E1)(W.u.)=1.3E-5 4, α=0.0969
249.77	9/2-		105.88 2	M1+E2	0.23	2.41	α=2.41
249.77	9/2-		190.24 6	E2		0.298	α=0.298
266.44	7/2-	0.21 ns 3	16.70 5	M1+E2	0.06	130.3	B(E2)(W.u.)=1.3×10² 10, B(M1)(W.u.)=0.021 16, α=130.3 24
	7/2-	0.21 ns 3	94.38 3	M1+E2	2.5	3.62	B(E2)(W.u.)=5.8×10² 25, B(M1)(W.u.)=0.0017 8, α=3.62
	7/2-	0.21 ns 3	122.55 5	M1+E2	0.20	1.584	B(E2)(W.u.)=8.7 22, B(M1)(W.u.)=0.0066 17, α=1.584
	7/2-	0.21 ns 3	206.95 5	M1+E2	0.33 LE	0.359	B(E2)(W.u.)<0.88, B(M1)(W.u.)>0.00031, α=0.359 9
	7/2-	0.21 ns 3	266.32 10	E2		0.0997	B(E2)(W.u.)=2.0 6, α=0.0997
267.45	13/2+	2.0 ns 2	78.07 4	E2		7.69	B(E2)(W.u.)=216 23, α=7.69
296.69	11/2+		29.26 2	M1+E2	0.07	20.2	α=20.2
	11/2+		46.86 5	E1		0.457	α=0.457
	11/2+		79.35 4	E2		7.21	α=7.21
	11/2+		107.22 5	M1+E2	1.2	2.29	α=2.29
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Mixing Ratio	Conversion Coefficient	Additional Data
369.48	3/2+		156.52 8	M1+E2	0.36	0.772	α=0.772
	3/2+		197.38 8	(E1)		0.0538	α=0.0538
	3/2+		310.1 1	E1		0.0170	α=0.0170 8
	3/2+		369.5 1	E1		0.0111	α=0.0111 8
388.46	11/2-		138.68 7	M1+E2	0.23	1.109	α=1.109
388.46	11/2-		244.57 8	E2		0.1305	α=0.1305
390.20	9/2-		123.80 6	M1+E2	0.52	1.501	α=1.501 22
	9/2-		140.40 7	M1+E2	0.44	1.044	α=1.044
	9/2-		172.92 7	(E1)		0.0761	α=0.0761
	9/2-		200.75 5	E1		0.0515	α=0.0515
	9/2-		218.10 6	E2		0.189	α=0.189
	9/2-		246.2 3	(M1)		0.227	α=0.227
396.44	11/2-	7.5 µs 7 % IT = 100	99.76 4	E1		0.327	B(E1)(W.u.)=3.6E-9 6, α=0.327
	11/2-	7.5 µs 7 % IT = 100	128.90 7	E1		0.1657	B(E1)(W.u.)=2.1E-9 3, α=0.1657
	11/2-	7.5 µs 7 % IT = 100	146.65 8	M1+E2	0.23	0.945	B(E2)(W.u.)=0.00026 4, B(M1)(W.u.)=2.1E-7 3, α=0.945
	11/2-	7.5 µs 7 % IT = 100	207.12 6	E1		0.0475	B(E1)(W.u.)=4.0E-10 7, α=0.0475
	11/2-	7.5 µs 7 % IT = 100	252.50 10	E2		0.1179	B(E2)(W.u.)=0.000108 15, α=0.1179
463.11	3/2+		250.2 1	M1		0.218	α=0.218
463.11	3/2+		463.6 4	E1		0.0066	α=0.0066 1
496.28	5/2+		278.90 10	M1		0.1622	α=0.1622
496.28	5/2+		283.4 1	M1+E2	0.80	0.1268	α=0.1268
590.06	7/2+		372.6 2	M1		0.0750	α=0.0750
	7/2+		377.1 2	M1		0.0726	α=0.0726
	7/2+		400.8 2	M1		0.0619	α=0.0619

Q(β-)=-3.30×10³ keV 3	S(n)= 7.21×10³ keV 3	S(p)= 6108 keV 18	Q(α)= 1798 keV 11
Reference: 2012WA38

References:
A	(HI,xnγ)	B	¹⁶¹Tm ε decay
C	¹⁶²Er(d,t)	D	¹⁶¹Er IT decay (7.5 μs)
E	¹⁶⁰Dy(α,3nγ)

E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
0	A B C D E	3/2-	3.21 h 3 % ε = 100
59.501 24	A B D E	5/2-	≤ 0.15 ns	59.51 3	100	M1+E2	0	3/2-
143.89 3	A B C D E	7/2-	≤ 0.18 ns	84.40 3 143.92 8	100 40	M1+E2 E2	59.501 0	5/2- 3/2-
172.06 3	B C E	5/2-	0.35 ns 10	28.18 3 112.56 3 172.05 6	60 5 100 8	M1+E2 M1+E2 M1+E2	143.89 59.501 0	7/2- 5/2- 3/2-
189.42 3	A B C D E	9/2+	84 ns 10	45.54 3	100	E1	143.89	7/2-
212.91 3	B	5/2+	0.81 ns 6	23.49 2 40.86 3 69.00 10 153.37 8 212.88 8	11 2 95 8 100 9	E2 E1 [E1] E1 E1	189.42 172.06 143.89 59.501 0	9/2+ 5/2- 7/2- 5/2- 3/2-
217.34 4	B	7/2+	0.55 ns 5	27.92 3 73.48 3 157.80 8	8 3 100 9	M1+E2 E1 E1	189.42 143.89 59.501	9/2+ 7/2- 5/2-
249.77 3	A B C D E	9/2-		105.88 2 190.24 6	100 9 100 9	M1+E2 E2	143.89 59.501	7/2- 5/2-
266.44 3	B C E	7/2-	0.21 ns 3	16.70 5 94.38 3 122.55 5 206.95 5 266.32 10	80 29 100 8 39 12 43 5	M1+E2 M1+E2 M1+E2 M1+E2 E2	249.77 172.06 143.89 59.501 0	9/2- 5/2- 7/2- 5/2- 3/2-
267.45 4	A B D E	13/2+	2.0 ns 2	78.07 4	100	E2	189.42	9/2+
296.69 4	A B D E	11/2+		29.26 2 46.86 5 79.35 4 107.22 5	29 10 100 14	M1+E2 E1 E2 M1+E2	267.45 249.77 217.34 189.42	13/2+ 9/2- 7/2+ 9/2+
369.48 5	B C	3/2+		156.52 8 197.38 8 310.1 1 369.5 1	51 5 9 4 21 3 100 9	M1+E2 (E1) E1 E1	212.91 172.06 59.501 0	5/2+ 5/2- 5/2- 3/2-
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
388.46 6	A B C E	11/2-		138.68 7 244.57 8	55 6 100 10	M1+E2 E2	249.77 143.89	9/2- 7/2-
390.20 4	B E	9/2-		123.80 6 140.40 7 172.92 7 200.75 5 218.10 6 246.2 3	33 10 40 6 52 14 79 17 100 10 ≤10	M1+E2 M1+E2 (E1) E1 E2 (M1)	266.44 249.77 217.34 189.42 172.06 143.89	7/2- 9/2- 7/2+ 9/2+ 5/2- 7/2-
396.44 4	A B C D E	11/2-	7.5 µs 7 % IT = 100	99.76 4 128.90 7 146.65 8 207.12 6 252.50 10	49 5 61 5 100 7 49 6 32 3	E1 E1 M1+E2 E1 E2	296.69 267.45 249.77 189.42 143.89	11/2+ 13/2+ 9/2- 9/2+ 7/2-
463.11 9	B C	3/2+		250.2 1 403.5 2 463.6 4	100 11 23 4 55 7	M1 E1	212.91 59.501 0	5/2+ 5/2- 3/2-
466.2 1	A E	17/2+		198.7 1	100	Q	267.45	13/2+
481	C	1/2+
496.28 8	B C	5/2+		278.90 10 283.4 1 436.8 6 496.3 5	98 12 100 12 18 6 12 5	M1 M1+E2	217.34 212.91 59.501 0	7/2+ 5/2+ 5/2- 3/2-
508.85 10	A E	15/2+		212.2 1 241.3 3	100 5 51 8	Q D	296.69 267.45	11/2+ 13/2+
522	C
531.11 23	A E	13/2-		142.5 5 281.3 3	17 5 100 15	Q	388.46 249.77	11/2- 9/2-
540	C	(11/2-)
563	C
578.5 3	A E	13/2-		182.1 3	100	D	396.44	11/2-
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
590.06 12	B C	7/2+		372.6 2 377.1 2 400.8 2	100 10 47 6 68 8	M1 M1 M1	217.34 212.91 189.42	7/2+ 5/2+ 9/2+
621	C
635	C
665	C
704	C
712	C
724.84 20	B C	(3/2-)		458.3 6 552.9 5 581.0 5 665.2 5 724.8 5	32 12 37 9 26 9 32 11 100 12		266.44 172.06 143.89 59.501 0	7/2- 5/2- 7/2- 5/2- 3/2-
726.0 4	A	15/2-		337.5 5	100	Q	388.46	11/2-
738	C
782.5 4	A E	15/2-		204.0 3 386.0 5	100 16 40 12	D (Q)	578.5 396.44	13/2- 11/2-
783.5 1	A E	21/2+		317.4 1	100	Q	466.2	17/2+
843.16 21	B C	(5/2-)		577.0 5 593.7 5 670.6 5 699.0 5 784.1 5 842.9 5	26 10 67 19 48 17 60 26 100 14 48 12		266.44 249.77 172.06 143.89 59.501 0	7/2- 9/2- 5/2- 7/2- 5/2- 3/2-
848.93 13	A E	19/2+		340.1 1 382.5 3	100 5 26 4	Q D	508.85 466.2	15/2+ 17/2+
891.6 4	A	17/2-		165.5 5 360.3 3 382.8 5	7 2 100 11.2 2	[E2] [E1]	726.0 531.11 508.85	15/2- 13/2- 15/2+
1006.7 5	A E	17/2-		224.1 5 428.2 5	100 29 81 26	D	782.5 578.5	15/2- 13/2-
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
1135.6 4	A	19/2-		409.5 5	100		726.0	15/2-
1208.6 2	A E	25/2+		425.0 1	100	Q	783.5	21/2+
1249.5 5	A E	19/2-		242.7 5 467.1 5	72 21 100 31	D	1006.7 782.5	17/2- 15/2-
1301.85 15	A	23/2+		452.9 1 518.5 3	100 5 22 3	Q	848.93 783.5	19/2+ 21/2+
1312.7 3	A	21/2-		177.0 5 421.2 3 464.0 5	5 2 100 17.1 6	[E2] [E1]	1135.6 891.6 848.93	19/2- 17/2- 19/2+
1481.20 19 ?	B	(5/2,7/2-)		891.0 5 984.5 5 1215.0 7 1268.3 5 1308.5 5 1337.8 5 1422.1 5 1481.5 7	38 17 69 17 24 14 36 17 100 14 43 21 ≤43 29 14		590.06 496.28 266.44 212.91 172.06 143.89 59.501 0	7/2+ 5/2+ 7/2- 5/2+ 5/2- 7/2- 5/2- 3/2-
1509.1 6	A E	21/2-		259.7 5 502.3 5	36 12 100 32		1249.5 1006.7	19/2- 17/2-
1589.7 4	A	23/2-		454.1 5 806.3 5	100 71 20	[E2] [E1]	1135.6 783.5	19/2- 21/2+
1727.1 2	A E	29/2+		518.5 1	100	Q	1208.6	25/2+
1772.2 3	A	25/2-		459.6 3 470.5 5	100 19.1 4	[E2] [E1]	1312.7 1301.85	21/2- 23/2+
1783.6 6	A	23/2-		274.5 5 534.2 5	53 13 100 33		1509.1 1249.5	21/2- 19/2-
1849.9 3	A	27/2+		548.1 3 641.2 5	100 15 8.5 25	Q D	1301.85 1208.6	23/2+ 25/2+
1960.25 17	B	(7/2-)		1235.7 4 1569.9 5 1693.5 4 1743.8 5 1748.0 5 1769.5 6 1788.0 3	23 2 25 3 24 3 10 3 12 3 10 3 100 9		724.84 390.20 266.44 217.34 212.91 189.42 172.06	(3/2-) 9/2- 7/2- 7/2+ 5/2+ 9/2+ 5/2-
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
2044.6 3	B	9/2+		1648.1 3	100		396.44	11/2-
2063.09 21 ?	B	(5/2+,7/2)		1796.0 8 1845.7 4 1850.0 3 1873.4 7 1891.9 5	≤8 100 10 ≤256 15 8 62 15		266.44 217.34 212.91 189.42 172.06	7/2- 7/2+ 5/2+ 9/2+ 5/2-
2063.2 4	A	27/2-		473.5 5 854.5 5	63 27 100	[E2] [E1]	1589.7 1208.6	23/2- 25/2+
2066.89 17 ?	B	(5/2,7/2-)		1341.5 5 1800.0 5 1850.0 3 1854.7 4 1894.1 4 1922.8 5 2007.1 6 2067.1 9	29 9 18 4 ≤201 100 10 87 10 ≤12 13 5 ≤7		724.84 266.44 217.34 212.91 172.06 143.89 59.501 0	(3/2-) 7/2- 7/2+ 5/2+ 5/2- 7/2- 5/2- 3/2-
2071.2 6	A	25/2-		287.4 5 562.0 5	38 12 100 31	D	1783.6 1509.1	23/2- 21/2-
2256.7 4	A	29/2-		406.7 5 484.4 3	19.3 6 100	[E1] [E2]	1849.9 1772.2	27/2+ 25/2-
2325.96 22	A	33/2+		598.9 1	100	Q	1727.1	29/2+
2369.0 7	A	27/2-		297.5 5 585.6 5	21 5 ≈100	D	2071.2 1783.6	25/2- 23/2-
2477.0 4	A	31/2+		627.1 3	100	Q	1849.9	27/2+
2548.5 3	A	31/2-		485.3 5 821.5 3	45 22 100	[E2] [E1]	2063.2 1727.1	27/2- 29/2+
2674.1 8	A	29/2-		305.0 5 ? 603.0 5	≈24 100 29	D Q	2369.0 2071.2	27/2- 25/2-
2775.4 5	A	33/2-		518.7 3	100	Q	2256.7	29/2-
2980.1 8	A	31/2-		306.0 5 611.0 5	≈83 ≈100	D	2674.1 2369.0	29/2- 27/2-
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
2991.36 24	A	37/2+		665.4 1	100	Q	2325.96	33/2+
3066.9 3	A	35/2-		518.5 3 740.9 3	100 95 11	[E2] [E1]	2548.5 2325.96	31/2- 33/2+
3169.2 5	A	35/2+		692.2 3	100		2477.0	31/2+
3345.6 6	A	37/2-		570.2 3	100	Q	2775.4	33/2-
3565.7 9	A	35/2-		585.6 5	100		2980.1	31/2-
3645.9 4	A	39/2-		579.0 3 654.6 5	100 37.3 31	[E2] [E1]	3066.9 2991.36	35/2- 37/2+
3708.3 3	A	41/2+		716.9 1	100		2991.36	37/2+
3913.3 7	A	39/2+		744.1 5	100		3169.2	35/2+
3976.4 8	A	41/2-		630.8 5	100	Q	3345.6	37/2-
4297.7 5	A	43/2-		651.8 3	100	(Q)	3645.9	39/2-
4461.5 3	A	45/2+		753.2 1	100	Q	3708.3	41/2+
4670.5 9	A	45/2-		694.1 5	100		3976.4	41/2-
4691.3 9	A	43/2+		778.0 5	100	Q	3913.3	39/2+
5020.4 7	A	47/2-		722.7 5	100	Q	4297.7	43/2-
5246.5 4	A	49/2+		785.0 3	100	Q	4461.5	45/2+
5427.8 11	A	49/2-		757.3 5	100	Q	4670.5	45/2-
5808.4 9	A	51/2-		788.0 5	100		5020.4	47/2-
6076.5 7	A	53/2+		830.0 5	100		5246.5	49/2+
6243.4 12	A	53/2-		815.6 5	100		5427.8	49/2-
6656	A	(55/2-)		848	100		5808.4	51/2-
6957	A	(57/2+)		880	100		6076.5	53/2+
7118	A	(57/2-)		875	100		6243.4	53/2-
7557	A	(59/2-)		901	100		6656	(55/2-)
7873	A	(61/2+)		916	100		6957	(57/2+)
8039	A	(61/2-)		921	100		7118	(57/2-)
8499	A	(63/2-)		942	100		7557	(59/2-)
8808	A	(65/2+)		935	100		7873	(61/2+)
8984	A	(65/2-)		945	100		8039	(61/2-)
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
9458	A	(67/2-)		959	100		8499	(63/2-)
9768	A	(69/2+)		960	100		8808	(65/2+)
9938	A	(69/2-)		954	100		8984	(65/2-)
10431	A	(71/2-)		973	100		9458	(67/2-)
10770	A	(73/2+)		1002	100		9768	(69/2+)
10921	A	(73/2-)		983	100		9938	(69/2-)
11433	A	(75/2-)		1002	100		10431	(71/2-)
11824	A	(77/2+)		1055	100		10770	(73/2+)
11953	A	(77/2-)		1032	100		10921	(73/2-)
12477	A	(79/2-)		1044	100		11433	(75/2-)
12934	A	(81/2+)		1110	100		11824	(77/2+)
13039	A	(81/2-)		1086	100		11953	(77/2-)
13571	A	(83/2-)		1094	100		12477	(79/2-)
14104	A	(85/2+)		1170	100		12934	(81/2+)
14183	A	(85/2-)		1144	100		13039	(81/2-)
14719	A	(87/2-)		1148	100		13571	(83/2-)
15339	A	(89/2+)		1234	100		14104	(85/2+)
15388	A	(89/2-)		1205	100		14183	(85/2-)
15924	A	(91/2-)		1205	100		14719	(87/2-)
16636	A	(93/2+)		1297	100		15339	(89/2+)
16658	A	(93/2-)		1270	100		15388	(89/2-)
17191	A	(95/2-)		1267	100		15924	(91/2-)
17991	A	(97/2-)		1333	100		16658	(93/2-)
17995	A	(97/2+)		1359	100		16636	(93/2+)
18521	A	(99/2-)		1330	100		17191	(95/2-)
19384	A	(101/2-)		1393	100		17991	(97/2-)
19397	A	(101/2-)		1405	100		17991	(97/2-)
19416	A	(101/2+)		1421	100		17995	(97/2+)
19916	A	(103/2-)		1394	100		18521	(99/2-)
20844	A	(105/2-)		1447 1460			19397 19384	(101/2-) (101/2-)
E(level) (keV)	XREF	J^π(level)	T_1/2(level)	E(γ) (keV)	I(γ)	M(γ)	Final Levels
20895	A	(105/2+)		1479	100		19416	(101/2+)
21376	A	(107/2-)		1460	100		19916	(103/2-)
22364?	A	(109/2-)		1521?	100		20844	(105/2-)
22407	A	(109/2+)		1512	100		20895	(105/2+)
22901	A	(111/2-)		1525	100		21376	(107/2-)
23917?	A	(113/2+)		1510?	100		22407	(109/2+)
24487	A	(115/2-)		1586	100		22901	(111/2-)
26143?	A	(119/2-)		1657?	100		24487	(115/2-)

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 1 - 3/2[521] band, α=-1/2.
0	3/2-	3.21 h 3 % ε = 100
143.89 3	7/2-	≤ 0.18 ns	84.40 3 143.92 8	100 40	M1+E2 E2	59.501 0	5/2- 3/2-
388.46 6	11/2-		138.68 7 244.57 8	55 6 100 10	M1+E2 E2	249.77 143.89	9/2- 7/2-
726.0 4	15/2-		337.5 5	100	Q	388.46	11/2-
1135.6 4	19/2-		409.5 5	100		726.0	15/2-
1589.7 4	23/2-		454.1 5 806.3 5	100 71 20	[E2] [E1]	1135.6 783.5	19/2- 21/2+
2063.2 4	27/2-		473.5 5 854.5 5	63 27 100	[E2] [E1]	1589.7 1208.6	23/2- 25/2+
2548.5 3	31/2-		485.3 5 821.5 3	45 22 100	[E2] [E1]	2063.2 1727.1	27/2- 29/2+
3066.9 3	35/2-		518.5 3 740.9 3	100 95 11	[E2] [E1]	2548.5 2325.96	31/2- 33/2+
3645.9 4	39/2-		579.0 3 654.6 5	100 37.3 31	[E2] [E1]	3066.9 2991.36	35/2- 37/2+
4297.7 5	43/2-		651.8 3	100	(Q)	3645.9	39/2-
5020.4 7	47/2-		722.7 5	100	Q	4297.7	43/2-
5808.4 9	51/2-		788.0 5	100		5020.4	47/2-
6656	(55/2-)		848	100		5808.4	51/2-
7557	(59/2-)		901	100		6656	(55/2-)
8499	(63/2-)		942	100		7557	(59/2-)
9458	(67/2-)		959	100		8499	(63/2-)
10431	(71/2-)
11433	(75/2-)		1002	100		10431	(71/2-)
12477	(79/2-)		1044	100		11433	(75/2-)
13571	(83/2-)
14719	(87/2-)		1148	100		13571	(83/2-)
15924	(91/2-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
17191	(95/2-)
18521	(99/2-)		1330	100		17191	(95/2-)
19916	(103/2-)		1394	100		18521	(99/2-)
21376	(107/2-)
22901	(111/2-)
24487	(115/2-)
26143	(119/2-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 2 - 5/2[523] band.
172.06 3	5/2-	0.35 ns 10
266.44 3	7/2-	0.21 ns 3	16.70 5 94.38 3 122.55 5 206.95 5 266.32 10	80 29 100 8 39 12 43 5	M1+E2 M1+E2 M1+E2 M1+E2 E2	249.77 172.06 143.89 59.501 0	9/2- 5/2- 7/2- 5/2- 3/2-
390.20 4	9/2-		123.80 6 140.40 7 172.92 7 200.75 5 218.10 6 246.2 3	33 10 40 6 52 14 79 17 100 10 ≤10	M1+E2 M1+E2 (E1) E1 E2 (M1)	266.44 249.77 217.34 189.42 172.06 143.89	7/2- 9/2- 7/2+ 9/2+ 5/2- 7/2-
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 3 - Coriolis-mixed +π band, α=+1/2.
189.42 3	9/2+	84 ns 10
212.91 3	5/2+	0.81 ns 6	23.49 2 40.86 3 69.00 10 153.37 8 212.88 8	11 2 95 8 100 9	E2 E1 [E1] E1 E1	189.42 172.06 143.89 59.501 0	9/2+ 5/2- 7/2- 5/2- 3/2-
267.45 4	13/2+	2.0 ns 2	78.07 4	100	E2	189.42	9/2+
466.2 1	17/2+		198.7 1	100	Q	267.45	13/2+
783.5 1	21/2+		317.4 1	100	Q	466.2	17/2+
1208.6 2	25/2+		425.0 1	100	Q	783.5	21/2+
1727.1 2	29/2+		518.5 1	100	Q	1208.6	25/2+
2325.96 22	33/2+		598.9 1	100	Q	1727.1	29/2+
2991.36 24	37/2+		665.4 1	100	Q	2325.96	33/2+
3708.3 3	41/2+		716.9 1	100		2991.36	37/2+
4461.5 3	45/2+		753.2 1	100	Q	3708.3	41/2+
5246.5 4	49/2+		785.0 3	100	Q	4461.5	45/2+
6076.5 7	53/2+		830.0 5	100		5246.5	49/2+
6957	(57/2+)		880	100		6076.5	53/2+
7873	(61/2+)		916	100		6957	(57/2+)
8808	(65/2+)		935	100		7873	(61/2+)
9768	(69/2+)		960	100		8808	(65/2+)
10770	(73/2+)
11824	(77/2+)		1055	100		10770	(73/2+)
12934	(81/2+)		1110	100		11824	(77/2+)
14104	(85/2+)
15339	(89/2+)		1234	100		14104	(85/2+)
16636	(93/2+)
17995	(97/2+)
19416	(101/2+)		1421	100		17995	(97/2+)
20895	(105/2+)		1479	100		19416	(101/2+)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
22407	(109/2+)
23917	(113/2+)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 4 - 3/2[651] bandhead, with 3/2[402] mixture
369.48 5	3/2+
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 5 - 11/2[505] band, α=-1/2.
396.44 4	11/2-	7.5 µs 7 % IT = 100
782.5 4	15/2-		204.0 3 386.0 5	100 16 40 12	D (Q)	578.5 396.44	13/2- 11/2-
1249.5 5	19/2-		242.7 5 467.1 5	72 21 100 31	D	1006.7 782.5	17/2- 15/2-
1783.6 6	23/2-		274.5 5 534.2 5	53 13 100 33		1509.1 1249.5	21/2- 19/2-
2369.0 7	27/2-		297.5 5 585.6 5	21 5 ≈100	D	2071.2 1783.6	25/2- 23/2-
2980.1 8	31/2-		306.0 5 611.0 5	≈83 ≈100	D	2674.1 2369.0	29/2- 27/2-
3565.7 9	35/2-		585.6 5	100		2980.1	31/2-
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 6 - 3/2[402] band, with 3/2[651] mixture.
463.11 9	3/2+
496.28 8	5/2+		278.90 10 283.4 1 436.8 6 496.3 5	98 12 100 12 18 6 12 5	M1 M1+E2	217.34 212.91 59.501 0	7/2+ 5/2+ 5/2- 3/2-
590.06 12	7/2+		372.6 2 377.1 2 400.8 2	100 10 47 6 68 8	M1 M1 M1	217.34 212.91 189.42	7/2+ 5/2+ 9/2+
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 7 - 1/2[400] bandhead
481	1/2+
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 8 - 3/2[532] bandhead
724.84 20	(3/2-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 9 - 5/2[512] bandhead
843.16 21	(5/2-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 10 - Possible K^π=9/2⁺ bandhead.
2044.6 3	9/2+

E(level)	J^π(level)	T_1/2(level)	Comments
0	3/2-	3.21 h 3 % ε = 100	Q=+1.361 14, μ=-0.365 3 E(level): 3/2[521] band, α=-1/2.
143.89	7/2-	≤ 0.18 ns	E(level): 3/2[521] band, α=-1/2.
172.06	5/2-	0.35 ns 10	XREF: E(?). E(level): 5/2[523] band.
189.42	9/2+	84 ns 10	E(level): Coriolis-mixed +π band, α=+1/2.
212.91	5/2+	0.81 ns 6	E(level): Coriolis-mixed +π band, α=+1/2.
266.44	7/2-	0.21 ns 3	XREF: E(?). E(level): 5/2[523] band.
267.45	13/2+	2.0 ns 2	E(level): Coriolis-mixed +π band, α=+1/2.
369.48	3/2+		E(level): 3/2[651] bandhead, with 3/2[402] mixture.
388.46	11/2-		E(level): 3/2[521] band, α=-1/2.
390.20	9/2-		XREF: E(?). E(level): 5/2[523] band.
396.44	11/2-	7.5 µs 7 % IT = 100	E(level): 11/2[505] band, α=-1/2.
463.11	3/2+		E(level): 3/2[402] band, with 3/2[651] mixture.
466.2	17/2+		E(level): Coriolis-mixed +π band, α=+1/2.
481	1/2+		E(level): 1/2[400] bandhead.
496.28	5/2+		E(level): 3/2[402] band, with 3/2[651] mixture.
590.06	7/2+		E(level): 3/2[402] band, with 3/2[651] mixture.
724.84	(3/2-)		E(level): 3/2[532] bandhead.
726.0	15/2-		E(level): 3/2[521] band, α=-1/2.
782.5	15/2-		E(level): 11/2[505] band, α=-1/2.
783.5	21/2+		E(level): Coriolis-mixed +π band, α=+1/2.
843.16	(5/2-)		E(level): 5/2[512] bandhead.
1135.6	19/2-		E(level): 3/2[521] band, α=-1/2.
1208.6	25/2+		E(level): Coriolis-mixed +π band, α=+1/2.
1249.5	19/2-		E(level): 11/2[505] band, α=-1/2.
1589.7	23/2-		E(level): 3/2[521] band, α=-1/2.
E(level)	J^π(level)	T_1/2(level)	Comments
1727.1	29/2+		E(level): Coriolis-mixed +π band, α=+1/2.
1783.6	23/2-		E(level): 11/2[505] band, α=-1/2.
2044.6	9/2+		E(level): Possible K^π=9/2⁺ bandhead.
2063.2	27/2-		E(level): 3/2[521] band, α=-1/2.
2325.96	33/2+		E(level): Coriolis-mixed +π band, α=+1/2.
2369.0	27/2-		E(level): 11/2[505] band, α=-1/2.
2548.5	31/2-		E(level): 3/2[521] band, α=-1/2.
2980.1	31/2-		E(level): 11/2[505] band, α=-1/2.
2991.36	37/2+		E(level): Coriolis-mixed +π band, α=+1/2.
3066.9	35/2-		E(level): 3/2[521] band, α=-1/2.
3565.7	35/2-		E(level): 11/2[505] band, α=-1/2.
3645.9	39/2-		E(level): 3/2[521] band, α=-1/2.
3708.3	41/2+		E(level): Coriolis-mixed +π band, α=+1/2.
4297.7	43/2-		E(level): 3/2[521] band, α=-1/2.
4461.5	45/2+		E(level): Coriolis-mixed +π band, α=+1/2.
5020.4	47/2-		E(level): 3/2[521] band, α=-1/2.
5246.5	49/2+		E(level): Coriolis-mixed +π band, α=+1/2.
5808.4	51/2-		E(level): 3/2[521] band, α=-1/2.
6076.5	53/2+		E(level): Coriolis-mixed +π band, α=+1/2.
6656	(55/2-)		E(level): 3/2[521] band, α=-1/2.
6957	(57/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
7557	(59/2-)		E(level): 3/2[521] band, α=-1/2.
7873	(61/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
8499	(63/2-)		E(level): 3/2[521] band, α=-1/2.
8808	(65/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
E(level)	J^π(level)	T_1/2(level)	Comments
9458	(67/2-)		E(level): 3/2[521] band, α=-1/2.
9768	(69/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
10431	(71/2-)		E(level): 3/2[521] band, α=-1/2.
10770	(73/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
11433	(75/2-)		E(level): 3/2[521] band, α=-1/2.
11824	(77/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
12477	(79/2-)		E(level): 3/2[521] band, α=-1/2.
12934	(81/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
13571	(83/2-)		E(level): 3/2[521] band, α=-1/2.
14104	(85/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
14719	(87/2-)		E(level): 3/2[521] band, α=-1/2.
15339	(89/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
15924	(91/2-)		E(level): 3/2[521] band, α=-1/2.
16636	(93/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
17191	(95/2-)		E(level): 3/2[521] band, α=-1/2.
17995	(97/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
18521	(99/2-)		E(level): 3/2[521] band, α=-1/2.
19416	(101/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
19916	(103/2-)		E(level): 3/2[521] band, α=-1/2.
20895	(105/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
21376	(107/2-)		E(level): 3/2[521] band, α=-1/2.
22407	(109/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
22901	(111/2-)		E(level): 3/2[521] band, α=-1/2.
23917	(113/2+)		E(level): Coriolis-mixed +π band, α=+1/2.
24487	(115/2-)		E(level): 3/2[521] band, α=-1/2.
E(level)	J^π(level)	T_1/2(level)	Comments
26143	(119/2-)		E(level): 3/2[521] band, α=-1/2.

E(level)	E(gamma)	Comments
249.77	190.24	I(γ): Discrepant values are Iγ(190)=157 from (α,3nγ) (1970Hj02), and Iγ(190)\|<29 from ¹⁶¹Er IT decay (7.5 μs) (1970Bo02).
388.46	138.68	I(γ): discrepant value is Iγ(138)=22 from (α,3nγ) (1970Hj02).
396.44	207.12	I(γ): discrepant value is Iγ(207)=91 from (α,3nγ) study (1970Hj02), but Iγ(207)=50(13) in ¹⁶¹Er IT decay.
891.6	382.8	I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=13 4 is computed.
1312.7	464.0	I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=30 8 is computed.
1589.7	806.3	I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=60 20 is computed.
1772.2	470.5	I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=22 7 is computed.
2063.09	1850.0	E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity
2063.2	473.5	I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=78 22 is computed.
2066.89	1850.0	E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity
2256.7	406.7	I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=24 7 is computed.
2369.0	585.6	E(γ): Multiply placed with intensity suitably divided I(γ): Multiply placed with intensity suitably divided
2548.5	485.3	I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=51 16 is computed.
3066.9	740.9	I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=96 14 is computed.
3565.7	585.6	E(γ): Multiply placed with intensity suitably divided I(γ): Multiply placed with intensity suitably divided
3645.9	654.6	I(γ): From the γ-ray "line list " of 2011Ch12, Iγ=27 9 is computed.