List of levels for 153SM

Author: N. Nica | Citation: Nucl. Data Sheets 170, 1 (2020) | Cutoff date: 16-Aug-2020

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Mixing Ratio	Conversion Coefficient	Additional Data
35.844	3/2-	< 0.1 ns	28.309 5	E1		1.517	α=1.517, α(L)=1.195 17, α(M)=0.258 4, α(N)=0.0560 8, α(O)=0.00709 10, α(P)=0.000241 4
35.844	3/2-	< 0.1 ns	35.842 5	E1		0.783	α=0.783, α(L)=0.617 9, α(M)=0.1329 19, α(N)=0.0290 4, α(O)=0.00379 6, α(P)=0.0001398 20
53.534	7/2+		45.996 5	M1+E2	1.0 +10-5	24	α=24 13, α(L)=19 10, α(M)=4.3 24, α(N)=0.94 51, α(O)=0.117 62, α(P)=5.7×10^-4 19
53.534	7/2+		53.534 5	E2		25.7	α=25.7, α(K)=3.96 6, α(L)=16.86 24, α(M)=3.93 6, α(N)=0.858 12, α(O)=0.1053 15, α(P)=0.000207 3
65.469	9/2+		57.94 1	(E2)		18.6	α=18.6, α(K)=3.78 6, α(L)=11.52 17, α(M)=2.69 4, α(N)=0.587 9, α(O)=0.0721 11, α(P)=0.0001778 25
90.875	5/2-	0.52 ns 16	37.343 5	E1		0.697	B(E1)(W.u.)=2.4E-4 +18-9, α=0.697, α(L)=0.550 8, α(M)=0.1184 17, α(N)=0.0259 4, α(O)=0.00339 5, α(P)=0.0001270 18
	5/2-	0.52 ns 16	55.031 8	M1(+E2)	0.6 LT	11.3	B(E2)(W.u.)<410, B(M1)(W.u.)=0.0049 +39-22, α=11.3 18, α(K)=7.5 6, α(L)=3.0 18, α(M)=0.67 43, α(N)=0.148 92, α(O)=0.019 12, α(P)=0.00047 5
	5/2-	0.52 ns 16	83.339 5	E1		0.451	B(E1)(W.u.)=1.6E-4 +10-5, α=0.451, α(K)=0.379 6, α(L)=0.0571 8, α(M)=0.01222 18, α(N)=0.00271 4, α(O)=0.000380 6, α(P)=1.79E-5 3
	5/2-	0.52 ns 16	90.874 5	E1		0.357	B(E1)(W.u.)=1.8E-4 +11-6, α=0.357, α(K)=0.300 5, α(L)=0.0447 7, α(M)=0.00957 14, α(N)=0.00213 3, α(O)=0.000299 5, α(P)=1.436E-5 21
98.39	11/2-	10.6 ms 3 % IT = 100	32.9 1	[E1]		0.996	B(E1)(W.u.)=3.14E-10 10, α=0.996 17, α(L)=0.785 13, α(M)=0.169 3, α(N)=0.0369 6, α(O)=0.00476 8, α(P)=0.000171 3
127.298	3/2-		36.423 5	M1(+E2)	0.73 LE	29	α=29 24, α(L)=22 19, α(M)=5.2 44, α(N)=1.13 95, α(O)=0.14 12, α(P)=0.00150 24
	3/2-		91.455 5	M1(+E2+E0)		2.7	α=2.7 6, α(K)=1.68 18, α(L)=0.80 55, α(M)=0.18 13, α(N)=0.041 28, α(O)=0.0052 34, α(P)=9.1×10^-5 28
	3/2-		119.763 5	E1		0.1688	α=0.1688, α(K)=0.1427 20, α(L)=0.0206 3, α(M)=0.00440 7, α(N)=0.000982 14, α(O)=0.0001400 20, α(P)=7.09×10^-6 10
	3/2-		127.298 5	E1		0.1430	α=0.1430, α(K)=0.1210 17, α(L)=0.01733 25, α(M)=0.00371 6, α(N)=0.000828 12, α(O)=0.0001184 17, α(P)=6.06×10^-6 9
174.173	7/2-		166.64 1	E1		0.0689	α=0.0689, α(K)=0.0585 9, α(L)=0.00821 12, α(M)=0.001753 25, α(N)=0.000393 6, α(O)=5.67×10^-5 8, α(P)=3.03E-6 5
182.902	5/2-	17 ns 7	55.61 1	[M1,E2]		15.6	α=15.6 64, α(K)=5.8 20, α(L)=7.6 65, α(M)=1.8 16, α(N)=0.38 33, α(O)=0.048 40, α(P)=3.5×10^-4 16
	5/2-	17 ns 7	92.03 1	[M1,E2]		2.7	α=2.7 6, α(K)=1.65 17, α(L)=0.78 53, α(M)=0.18 13, α(N)=0.040 27, α(O)=0.0051 33, α(P)=8.9×10^-5 27
	5/2-	17 ns 7	129.36 1	E1		0.1369	B(E1)(W.u.)=9E-7 +9-4, α=0.1369, α(K)=0.1159 17, α(L)=0.01657 24, α(M)=0.00354 5, α(N)=0.000792 11, α(O)=0.0001133 16, α(P)=5.82E-6 9
	5/2-	17 ns 7	147.06 1	M1,E2		0.581	α=0.581 17, α(K)=0.43 5, α(L)=0.115 48, α(M)=0.026 12, α(N)=0.0058 25, α(O)=7.8×10^-4 29, α(P)=2.42E-5 64
	5/2-	17 ns 7	175.370 11	E1		0.0601	B(E1)(W.u.)=7E-7 +6-3, α=0.0601, α(K)=0.0510 8, α(L)=0.00713 10, α(M)=0.001524 22, α(N)=0.000342 5, α(O)=4.94E-5 7, α(P)=2.66E-6 4
	5/2-	17 ns 7	182.900 8	E1		0.0537	B(E1)(W.u.)=7E-7 +7-3, α=0.0537, α(K)=0.0456 7, α(L)=0.00636 9, α(M)=0.001358 19, α(N)=0.000304 5, α(O)=4.41E-5 7, α(P)=2.39E-6 4
262.331	(7/2)+		254.794 15	M1,E2		0.110	α=0.110 16, α(K)=0.089 18, α(L)=0.0163 15, α(M)=0.0036 4, α(N)=0.00080 9, α(O)=0.000114 7, α(P)=5.2×10^-6 15
276.713	(3/2)+		223.173 11	(E2)		0.1450	α=0.1450, α(K)=0.1071 15, α(L)=0.0295 5, α(M)=0.00666 10, α(N)=0.001476 21, α(O)=0.000198 3, α(P)=5.43×10^-6 8
276.713	(3/2)+		276.71 2	M1(+E2+E0)		0.086	α=0.086 14, α(K)=0.070 15, α(L)=0.0124 7, α(M)=0.00273 20, α(N)=0.00061 4, α(O)=8.75×10^-5 17, α(P)=4.2E-6 13
321.113	(3/2)+		321.13 3	M1		0.0675	α=0.0675, α(K)=0.0575 8, α(L)=0.00794 12, α(M)=0.001702 24, α(N)=0.000386 6, α(O)=5.80×10^-5 9, α(P)=3.63E-6 5
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ) (keV)	Multipolarity	Mixing Ratio	Conversion Coefficient	Additional Data
362.286	(5/2)+		354.76 3	M1		0.0520	α=0.0520, α(K)=0.0443 7, α(L)=0.00610 9, α(M)=0.001307 19, α(N)=0.000296 5, α(O)=4.45×10^-5 7, α(P)=2.79E-6 4
362.286	(5/2)+		362.30 3	M1(+E2)		0.040	α=0.040 9, α(K)=0.034 9, α(L)=0.0054 4, α(M)=0.00117 7, α(N)=0.000264 17, α(O)=3.8×10^-5 4, α(P)=2.02E-6 62
404.134	1/2-		404.17 4	E1		0.00707	α=0.00707, α(K)=0.00604 9, α(L)=0.000809 12, α(M)=0.0001725 25, α(N)=3.89×10^-5 6, α(O)=5.75E-6 8, α(P)=3.39E-7 5
405.468	3/2-		278.17 2	M1,E2		0.085	α=0.085 14, α(K)=0.069 15, α(L)=0.0122 6, α(M)=0.00268 19, α(N)=0.00060 4, α(O)=8.60×10^-5 15, α(P)=4.1E-6 12
405.468	3/2-		397.90 4	E1		0.00734	α=0.00734, α(K)=0.00627 9, α(L)=0.000840 12, α(M)=0.000179 3, α(N)=4.04×10^-5 6, α(O)=5.97E-6 9, α(P)=3.52E-7 5
414.928	1/2+		414.97 6	M1		0.0346	α=0.0346, α(K)=0.0295 5, α(L)=0.00404 6, α(M)=0.000866 13, α(N)=0.000196 3, α(O)=2.95×10^-5 5, α(P)=1.85E-6 3
450.051	5/2-		173.34 1	E1		0.0620	α=0.0620, α(K)=0.0526 8, α(L)=0.00736 11, α(M)=0.001573 22, α(N)=0.000353 5, α(O)=5.10×10^-5 8, α(P)=2.74E-6 4
481.092	(3/2)+		390.24 4	(E1)		0.00769	α=0.00769, α(K)=0.00657 10, α(L)=0.000881 13, α(M)=0.000188 3, α(N)=4.24×10^-5 6, α(O)=6.26E-6 9, α(P)=3.68E-7 6

Levels: Calculations of configurations are discussed by 1971Ma41, 1973Ga29, 1979Ka11, and 1980Gu01; quadrupole band structures by 1989Sh41; possible octupole deformation by 1995Af01; ratios of matrix elements in β- decay by 1994Dz03; and summary of moments 1995Ga38.

Gammas: For unplaced γ’s see ¹⁵²Sm(n,γ), ¹⁵²Sm(n,γ) two γ cascade, and ¹⁵³Pm β- decay datasets

Gammas: For γ rays from (n,γ) E=th: two γ cascade the doublet levels 126.412, 127.298 and 404.134, 405.468 are unresolved

Q(β-)=807.5 keV 7	S(n)= 5868.40 keV 13	S(p)= 8594 keV 26	Q(α)= -609.1 keV 19
Reference: 2017WA10

References:
A	¹⁵³Pm β^- decay	B	¹⁵³Sm IT decay (10.6 MS)
C	¹⁵¹Sm(t,p)	D	¹⁵²Sm(n,γ) E=TH
E	¹⁵²Sm(n,γ) E=TH: TWO γ CASCADE	F	¹⁵²Sm(n,γ) E=2 KEV:ARC
G	¹⁵²Sm(d,p)	H	¹⁵²Sm(α,³He)
I	¹⁵⁴Sm(p,d)	J	¹⁵⁴Sm(d,t),(pol d,t)
K	¹⁵⁴Sm(³He,α)	L	¹⁵⁴Eu(t,α)
M	(HI,xnγ)

E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 1 - 3/2[651]+3/2[402] band
0.0	3/2+	46.284 h 4 % β^- = 100
7.536 3	5/2+		7.535 5	100	M1	0.0	3/2+
53.534 3	7/2+		45.996 5 53.534 5	100 12 52 5	M1+E2 E2	7.536 0.0	5/2+ 3/2+
65.469 7	9/2+		11.9S 57.94 1	100	(E2)	53.534 7.536	7/2+ 5/2+
188.8 7	(11/2+)		123.3 135.3	100 16 72 12		65.469 53.534	9/2+ 7/2+
195.8 9	(13/2)+		130.4	100		65.469	9/2+
417.2 12	(17/2)+		221.6	100		195.8	(13/2)+
424.8 9	(15/2)+		228.9 235.9	32 4 100 10		195.8 188.8	(13/2)+ (11/2+)
733.4 14	(21/2)+		316.0	100		417.2	(17/2)+
764.0 12	(19/2)+		339.0 347	100		424.8 417.2	(15/2)+ (17/2)+
1138.1 16	(25/2+)		404.6	100		733.4	(21/2)+
1199.3 14	(23/2+)		435.5 466	100		764.0 733.4	(19/2)+ (21/2)+
1622.2 19	(29/2+)		484.1	100		1138.1	(25/2+)
1722.2 16	(27/2+)		523 584			1199.3 1138.1	(23/2+) (25/2+)
2176.3 21	(33/2+)		554.1			1622.2	(29/2+)
2324.2 19	(31/2+)
2793.3 23	(37/2+)		617.0	100		2176.3	(33/2+)
3467 3	(41/2+)		673.7	100		2793.3	(37/2+)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 2 - 3/2[521] band.
35.844 3	3/2-	< 0.1 ns
90.875 3	5/2-	0.52 ns 16	37.343 5 55.031 8 83.339 5 90.874 5	9.0 9 6.9 4 66 5 100 5	E1 M1(+E2) E1 E1	53.534 35.844 7.536 0.0	7/2+ 3/2- 5/2+ 3/2+
174.173 5	7/2-		83.302 8 108.71 1 120.64 1 138.32 2 166.64 1	7.6 15 31.5 20 16.7 12 4.5 6 100 5	E1	90.875 65.469 53.534 35.844 7.536	5/2- 9/2+ 7/2+ 3/2- 5/2+
267	9/2-
495	(11/2)-
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 3 - 11/2[505] band.
98.39 10	11/2-	10.6 ms 3 % IT = 100
246.2 8	(13/2-)		147.1	100		98.39	11/2-
413.0 6	(15/2-)		166.3 313.4	100 15 26 3		246.2 98.39	(13/2-) 11/2-
597.7 9	(17/2-)		184.8 351.4	100 16 47 4		413.0 246.2	(15/2-) (13/2-)
799.6 10	(19/2)-		201.8 386.6	100 10 66 5		597.7 413.0	(17/2-) (15/2-)
1017.9 11	(21/2-)		218.1 420.3	100 12 99 12		799.6 597.7	(19/2)- (17/2-)
1251.6 12	(23/2-)		233.6 452.1	72 10 100 9		1017.9 799.6	(21/2-) (19/2)-
1500.0 13	(25/2-)		248.7 482.0	38 7 100 10		1251.6 1017.9	(23/2-) (21/2-)
1763.0 14	(27/2-)		263 511.3	100		1500.0 1251.6	(25/2-) (23/2-)
2037.8 16	(29/2-)		537.7	100		1500.0	(25/2-)
2327.0 17	(31/2-)		564.0	100		1763.0	(27/2-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 4 - 3/2[532] band.
127.298 3	3/2-
182.902 4	5/2-	17 ns 7	55.61 1 92.03 1 129.36 1 147.06 1 175.370 11 182.900 8	2.0 4 5.0 7 43 2 16.4 9 81 4 100 4	[M1,E2] [M1,E2] E1 M1,E2 E1 E1	127.298 90.875 53.534 35.844 7.536 0.0	3/2- 5/2- 7/2+ 3/2- 5/2+ 3/2+
265.927 11	(7/2)-		83.03 2 138.64 3 258.43 5	100 19 35 5 19 9		182.902 127.298 7.536	5/2- 3/2- 5/2+
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 5 - 3/2[402]+3/2[651] band
321.113 7	(3/2)+
356.686 7	(5/2+)		35.571 5 90.766 13 182.52 1 229.40 5 265.78 4 291.17 5 303.16 4 349.16 5 356.62 10	26 3 99 20 21 3 5.4 16 37 4 77 8 90 11 100 8 32 9		321.113 265.927 174.173 127.298 90.875 65.469 53.534 7.536 0.0	(3/2)+ (7/2)- 7/2- 3/2- 5/2- 9/2+ 7/2+ 5/2+ 3/2+
447.05 3	(7/2)+		170.33 3 393.58 8 439.53 6	4.6 14 39 4 100 8		276.713 53.534 7.536	(3/2)+ 7/2+ 5/2+
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 6 - 1/2[530] band.
404.134 14	1/2-
405.468 14	3/2-		278.17 2 314.60 3 369.63 3 397.90 4	5.9 4 3.0 2 9.1 5 100 6	M1,E2 E1	127.298 90.875 35.844 7.536	3/2- 5/2- 3/2- 5/2+
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 7 - 1/2[400]+1/2[660] band
414.928 13	1/2+
481.092 12	(3/2)+		66.16 1 76.96 1 204.36 3 298.20 5 390.24 4 445.15 6 473.63 6 481.14 6	0.36 9 1.9 4 3.1 3 1.70 22 30.0 18 7.4 7 100 7 31 3	(E1)	414.928 404.134 276.713 182.902 90.875 35.844 7.536 0.0	1/2+ 1/2- (3/2)+ 5/2- 5/2- 3/2- 5/2+ 3/2+
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 8 - 1/2[521] band.
695.79 4	1/2-
750.30 5	(3/2)-		393.58 8 473.63 6 567.44 14 622.6 4 659.3 3 714.1 3 743.1 5 750.2 4	8.2 8 167 12 39.0 5 17 4 100 11 45 7 13.7 5 14.4 5		356.686 276.713 182.902 127.298 90.875 35.844 7.536 0.0	(5/2+) (3/2)+ 5/2- 3/2- 5/2- 3/2- 5/2+ 3/2+
796 5	(5/2)-
922	(7/2-)
1000	(9/2-)
E(level) (keV)	J^π(level)	T_1/2(level)	E(γ)	I(γ)	M(γ)	Final Levels
Band 9 - 5/2[523] band.
450.051 11	5/2-
549 2	(7/2-)

E(level)	J^π(level)	T_1/2(level)	Comments
0.0	3/2+	46.284 h 4 % β^- = 100	Q=+1.30 12, μ=-0.0216 1 Δ<r²>(¹⁵²Sm-¹⁵³Sm)=0.0963 16 fm² (1984Ea02) and 0.099 fm² (1990En01). E(level): Δ<r²>(¹⁵²Sm-¹⁵³Sm)=0.0963 16 fm² (1984Ea02) and 0.099 fm² (1990En01). 3/2[651]+3/2[402] band.
7.536	5/2+		The small value of the energy spacing in the ground-state band results from the expected strong Coriolis coupling between the ground-state band and higher lying positive-parity orbitals, principally 5/2[642] and 1/2[660], arising from the i_13/2 spherical shell-model state (1971Bu16). E(level): The small value of the energy spacing in the ground-state band results from the expected strong Coriolis coupling between the ground-state band and higher lying positive-parity orbitals, principally 5/2[642] and 1/2[660], arising from the i_13/2 spherical shell-model state (1971Bu16). 3/2[651]+3/2[402] band.
35.844	3/2-	< 0.1 ns	E(level): 3/2[521] band.
53.534	7/2+		E(level): 3/2[651]+3/2[402] band.
65.469	9/2+		E(level): 3/2[651]+3/2[402] band.
90.875	5/2-	0.52 ns 16	E(level): 3/2[521] band.
98.39	11/2-	10.6 ms 3 % IT = 100	E(level): 11/2[505] band.
127.298	3/2-		E(level): 3/2[532] band.
174.173	7/2-		E(level): 3/2[521] band.
182.902	5/2-	17 ns 7	E(level): 3/2[532] band.
188.8	(11/2+)		E(level): 3/2[651]+3/2[402] band.
195.8	(13/2)+		E(level): 3/2[651]+3/2[402] band.
246.2	(13/2-)		E(level): 11/2[505] band.
265.927	(7/2)-		XREF: γ(262)H(261)I(263)J(262). E(level): 3/2[532] band.
267	9/2-		E(level): 3/2[521] band.
321.113	(3/2)+		E(level): 3/2[402]+3/2[651] band.
356.686	(5/2+)		E(level): 3/2[402]+3/2[651] band.
404.134	1/2-		E(level): 1/2[530] band.
405.468	3/2-		E(level): 1/2[530] band.
413.0	(15/2-)		E(level): 11/2[505] band.
414.928	1/2+		XREF: γ(420). E(level): 1/2[400]+1/2[660] band.
417.2	(17/2)+		XREF: H(411). E(level): 3/2[651]+3/2[402] band.
424.8	(15/2)+		E(level): 3/2[651]+3/2[402] band.
447.05	(7/2)+		E(level): 3/2[402]+3/2[651] band.
450.051	5/2-		E(level): 5/2[523] band.
E(level)	J^π(level)	T_1/2(level)	Comments
481.092	(3/2)+		E(level): 1/2[400]+1/2[660] band.
495	(11/2)-		E(level): 3/2[521] band.
524.360	(5/2)-		XREF: H(528).
549	(7/2-)		E(level): 5/2[523] band.
597.7	(17/2-)		E(level): 11/2[505] band.
695.79	1/2-		E(level): 1/2[521] band.
733.4	(21/2)+		E(level): 3/2[651]+3/2[402] band.
750.30	(3/2)-		E(level): 1/2[521] band.
764.0	(19/2)+		E(level): 3/2[651]+3/2[402] band.
796	(5/2)-		XREF: H(793). E(level): 1/2[521] band.
799.6	(19/2)-		E(level): 11/2[505] band.
885	(5/2+)		XREF: γ(881).
922	(7/2-)		E(level): 1/2[521] band.
1000	(9/2-)		E(level): 1/2[521] band.
1017.9	(21/2-)		E(level): 11/2[505] band.
1018.3	(5/2-)		XREF: L(1025).
1061	5/2-		XREF: I(1059).
1132	5/2-,7/2-		XREF: K(1126).
1138.1	(25/2+)		E(level): 3/2[651]+3/2[402] band.
1140	5/2-		XREF: I(1139)J(1138).
1149			XREF: J(1144).
1197	(7/2)-		XREF: γ(1201)L(1201).
1199.3	(23/2+)		E(level): 3/2[651]+3/2[402] band.
1251.6	(23/2-)		E(level): 11/2[505] band.
1343.10	(3/2)+		XREF: γ(1346)L(1336).
E(level)	J^π(level)	T_1/2(level)	Comments
1396.6	3/2+,5/2+		XREF: I(1399).
1400.22	(5/2-)		XREF: J(1397)L(1404).
1500.0	(25/2-)		E(level): 11/2[505] band.
1566	(5/2)+		XREF: L(1574).
1622.2	(29/2+)		E(level): 3/2[651]+3/2[402] band.
1722.2	(27/2+)		E(level): 3/2[651]+3/2[402] band.
1763.0	(27/2-)		E(level): 11/2[505] band.
2037.8	(29/2-)		E(level): 11/2[505] band.
2176.3	(33/2+)		E(level): 3/2[651]+3/2[402] band.
2324.2	(31/2+)		E(level): 3/2[651]+3/2[402] band.
2327.0	(31/2-)		E(level): 11/2[505] band.
2793.3	(37/2+)		E(level): 3/2[651]+3/2[402] band.
3467	(41/2+)		E(level): 3/2[651]+3/2[402] band.