Nuclear data explorer · compound nucleus

¹⁵²Sm

¹⁵²Sm is formed when ¹⁵¹Sm + n fuse. Its levels just above each threshold are the resonances that set those reactions' rates.

¹⁵¹Sm(n,γ)¹⁵²Sm

Channels and what has been measured

Every EXFOR reaction that forms ¹⁵²Sm: entrance pair (rows) and the quantities measured (columns), with the energies covered.

Every EXFOR reaction that forms ¹⁵²Sm: entrance pair (rows) and the quantities measured (columns), with the energies covered.
Reaction	Datasets	σ	ωγ	MACS	other	Fitted in evaluation
¹⁵¹Sm(n,γ)¹⁵²Sm	25	225 meV	3	125 keV – 100 keV	825 meV – 980 keV

1 more reactions: heavier projectiles, several outgoing particles or inclusive data

1 more reactions: heavier projectiles, several outgoing particles or inclusive data
Reaction	Datasets	σ	ωγ	MACS	other	Fitted in evaluation
¹⁵¹Sm(n,abs)	1	— (0)	— (0)	1	— (0)

Level scheme

Adopted levels of ¹⁵²Sm from ENSDF, with the particle thresholds and the Gamow window of the selected channel drawn across them.

Temperature

Near the thresholdAll 213 levels

level in the window with a measured ωγ
level in the window with no ωγ in EXFOR
Jπ in parentheses or in italics is tentative.

Resonances in the window

Levels between the ¹⁵¹Sm(n,γ)¹⁵²Sm threshold (S = 8257.8 keV) and the top of the Gamow window at T₉ = 0.09 (50 keV above it), with the resonance strengths ωγ EXFOR holds for them.

Looking for measured strengths…

Resonances in the window
E (keV)	E_r (keV, c.m.)	Jπ	T½ or Γ	ωγ measured
ENSDF lists no level in this window.

A strength is matched to a level when its resonance energy plus the threshold lies within max(3 keV, 3σ) of the level energy.

Levels of ¹⁵²Sm (213)

Levels of ¹⁵²Sm
E (keV)	Jπ	T½ or Γ	γ branches
0	0+	–	–
121.782	2+	T½ = 1.4 ns	→ 0 (100 %)
366.479	4+	T½ = 57.7 ps	→ 121.78 (100 %)
684.751	0+	T½ = 6.1 ps	→ 121.78 (100 %), → 0
706.928	6+	T½ = 10.3 ps	→ 366.48 (100 %)
810.453	2+	T½ = 7.4 ps	→ 684.75 (0.35 %), → 366.48 (20 %), → 121.78 (58 %), → 0 (21 %)
963.358	1-	T½ = 20.5 fs	→ 810.45 (0.0069 %), → 684.75, → 121.78 (55 %), → 0 (45 %)
1022.97	4+	T½ = 8.3 ps	→ 810.45 (8 %), → 706.93 (3.9 %), → 366.48 (55 %), → 121.78 (33 %)
1041.12	3-	T½ = 27 fs	→ 366.48 (29 %), → 121.78 (71 %)
1082.84	0+	T½ = 15 ps	→ 963.36 (7 %), → 810.45 (6.7 %), → 684.75, → 121.78 (86 %), → 0
1085.84	2+	T½ = 1.09 ps	→ 810.45 (0.14 %), → 684.75 (0.0026 %), → 366.48 (1 %), → 121.78 (58 %), → 0 (41 %)
1125.39	8+	T½ = 3.06 ps	→ 706.93 (100 %)
1221.64	5-	T½ = 73 fs	→ 706.93 (18 %), → 366.48 (82 %)
1226	(2+)	–	–
1233.86	3+	T½ = 760 fs	→ 1085.8 (0.11 %), → 1023 (0.021 %), → 810.45 (0.017 %), → 366.48 (24 %), → 121.78 (76 %)
1292.77	2+	T½ = < 16 ps	→ 1085.8 (0.18 %), → 1082.8 (0.68 %), → 1041.1 (11 %), → 1023 (1.2 %), → 963.36 (19 %), → 810.45 (3.9 %), → 684.75 (0.043 %), → 366.48 (43 %), → 121.78 (5.9 %), → 0 (16 %)
1310.51	6+	–	→ 1221.6 (1.6 %), → 1125.4 (0.33 %), → 1023 (36 %), → 706.93 (38 %), → 366.48 (23 %)
1371.73	4+	T½ = 1.1 ps	→ 1233.9 (0.085 %), → 1221.6 (0.1 %), → 1085.8 (1.1 %), → 1041.1 (1.1 %), → 1023 (0.19 %), → 810.45 (0.16 %), → 706.93 (1.1 %), → 366.48 (75 %), → 121.78 (21 %)
1505.77	7-	–	→ 1125.4 (4.5 %), → 706.93 (96 %)
1510.79	1-	T½ = 91 fs	→ 1292.8 (0.068 %), → 1085.8 (0.02 %), → 1082.8, → 1041.1 (0.064 %), → 963.36 (1.1 %), → 810.45 (1.2 %), → 684.75 (3.3 %), → 121.78 (94 %), → 0 (0.74 %)
1529.8	2-	T½ = 270 fs	→ 1292.8 (0.025 %), → 1233.9 (1.8 %), → 1085.8 (11 %), → 1041.1 (1.7 %), → 963.36 (0.53 %), → 810.45 (0.38 %), → 121.78 (84 %)
1559.62	5+	–	→ 1233.9 (3.4 %), → 706.93 (25 %), → 366.48 (72 %)
1579.43	3-	T½ = 72 fs	→ 1371.7 (0.35 %), → 1292.8 (0.067 %), → 1233.9 (0.47 %), → 1085.8 (1.5 %), → 1041.1 (0.21 %), → 1023 (0.85 %), → 963.36 (0.44 %), → 810.45 (4 %), → 366.48 (68 %), → 121.78 (24 %)
1609.26	10+	T½ = 1.38 ps	→ 1125.4 (100 %)
1612.9	4+	–	→ 1371.7, → 1292.8 (9.6 %), → 1233.9 (1.2 %), → 1221.6 (6.9 %), → 1085.8, → 1041.1 (22 %), → 1023 (6.4 %), → 810.45 (2 %), → 706.93 (45 %), → 366.48 (4.5 %), → 121.78 (2.7 %)
1649.83	2-	T½ = 164 ps	→ 1292.8 (0.66 %), → 1233.9 (12 %), → 1085.8 (53 %), → 1041.1 (0.13 %), → 963.36 (2.2 %), → 810.45 (1.9 %), → 121.78 (30 %)
1658.8	0+	–	→ 963.36 (97 %), → 810.45 (2.3 %), → 121.78 (1.2 %)
1666.45	8+	–	→ 1505.8 (6.3 %), → 1310.5 (58 %), → 1125.4 (23 %), → 706.93 (13 %)
1680.56	1-	T½ = 38.1 fs	→ 1292.8 (0.068 %), → 1085.8 (0.2 %), → 1082.8 (0.4 %), → 1041.1 (0.3 %), → 963.36 (0.69 %), → 810.45 (52 %), → 684.75 (38 %), → 121.78 (4.7 %), → 0 (3.2 %)
1682.07	4-	T½ = > 596 fs	→ 366.48 (100 %)
1728.27	6+	–	→ 1505.8 (0.84 %), → 1371.7 (5.9 %), → 1221.6 (5.1 %), → 706.93 (73 %), → 366.48 (15 %)
1730.2	3-	T½ = 82 fs	→ 1371.7 (3 %), → 1233.9 (11 %), → 1085.8 (13 %), → 1023 (2.6 %), → 963.36 (1.3 %), → 810.45 (12 %), → 366.48 (48 %), → 121.78 (9.9 %)
1736	0+	–	–
1754.98	0+	T½ = > 277 fs	→ 1292.8, → 963.36 (94 %), → 810.45 (5.9 %)
1757	4+	–	→ 1371.7 (11 %), → 1292.8 (0.83 %), → 1233.9 (29 %), → 1085.8 (46 %), → 1023 (1.7 %), → 810.45 (2.1 %), → 706.93 (1.3 %), → 366.48 (8 %), → 121.78 (0.31 %)
1764.32	5-	T½ = 80 fs	→ 706.93 (55 %), → 366.48 (45 %)
1769.13	2+	T½ = 130 fs	→ 1529.8, → 1371.7 (0.46 %), → 1292.8 (2.1 %), → 1233.9 (2.1 %), → 1085.8 (5.8 %), → 1041.1 (14 %), → 963.36 (19 %), → 810.45 (24 %), → 684.75 (13 %), → 121.78 (8.9 %), → 0 (11 %)
1776.56	(2+)	T½ = < 15 ps	→ 1041.1 (52 %), → 963.36 (48 %)
1779.12	3-	T½ = 56 fs	→ 1041.1 (6.7 %), → 1023 (33 %), → 810.45 (60 %)
1803.94	5-	–	→ 1371.7 (2.8 %), → 1041.1 (0.35 %), → 1023 (7.3 %), → 706.93 (50 %), → 366.48 (39 %)
1822.03	(4-)	–	→ 1233.9 (12 %), → 1041.1 (12 %), → 366.48 (76 %)
1879.14	9-	–	→ 1609.3 (13 %), → 1505.8 (0.6 %), → 1125.4 (86 %)
1891.06	5+	–	→ 1757 (18 %), → 1559.6 (21 %), → 1371.7 (33 %), → 1233.9 (28 %), → 706.93, → 366.48
1892.48	0+,1,2	–	→ 963.36 (71 %), → 810.45 (29 %)
1901	(2+)	–	–
1906.13	2+	–	→ 1649.8, → 1529.8, → 1233.9 (2.5 %), → 1085.8, → 1041.1, → 963.36 (7.6 %), → 121.78 (90 %), → 0
1907.73	(3+)	–	→ 1085.8 (7.3 %), → 1023 (7.2 %), → 810.45 (32 %), → 366.48 (20 %), → 121.78 (33 %)
1920.46	6-	–	→ 1803.9 (32 %), → 1559.6 (49 %), → 706.93 (19 %)
1929.93	6-	–	→ 1559.6 (19 %), → 706.93 (81 %)
1930.17	–	–	–
1933.3	(4+,5,6+)	–	→ 1023, → 706.93, → 366.48
1944.61	1-,2	–	→ 1082.8 (4.5 %), → 1041.1 (32 %), → 963.36 (64 %)
1945.1	1,2+	–	→ 1292.8 (40 %), → 1082.8, → 684.75 (60 %), → 121.78, → 0
1945.9	7+	–	→ 1728.3 (4.3 %), → 1559.6 (11 %), → 1125.4 (27 %), → 706.93 (57 %)
1946.15	0,1,2,3-	–	→ 963.36
1954.3	3-,4,5-	–	→ 1221.6 (41 %), → 1041.1 (59 %)
1958.27	(2+,3,4+)	–	→ 1023, → 810.45, → 366.48
1962	–	–	–
1963.95	(1,2+)	–	→ 810.45, → 121.78, → 0
1976.98	4+,5,6+	–	→ 1023, → 706.93, → 366.48
1977.19	5-	–	→ 1310.5 (25 %), → 1221.6 (24 %), → 1023 (51 %)
2003.66	2+,3,4+	–	→ 810.45 (100 %)
2004.24	6+	–	→ 1612.9 (15 %), → 1559.6 (2.3 %), → 1310.5 (8.8 %), → 1221.6 (5.1 %), → 1125.4 (12 %), → 1023 (4.3 %), → 706.93 (28 %), → 366.48 (25 %)
2004.29	7-	–	→ 1125.4 (42 %), → 706.93 (58 %)
2006.61	0,1,2,3-	–	→ 963.36
2011.55	3-,4,5-	–	→ 1221.6 (46 %), → 1041.1 (54 %)
2011.84	2+,3,4+	–	→ 1023 (7.7 %), → 810.45 (3.5 %), → 366.48 (59 %), → 121.78 (30 %)
2038.37	1,2+	–	→ 810.45 (77 %), → 684.75 (23 %), → 121.78
2040.09	6+	–	→ 1891.1 (21 %), → 1757 (14 %), → 1728.3, → 1612.9, → 1221.6 (15 %), → 706.93 (51 %), → 366.48
2042.79	0+,1,2	–	→ 963.36 (88 %), → 810.45 (8.8 %), → 121.78 (2.7 %)
2044.45	3,4+	–	→ 1233.9 (49 %), → 1023 (14 %), → 810.45 (33 %), → 366.48 (4.4 %)
2046.16	4+,5,6,7+	–	→ 1559.6 (53 %), → 706.93 (47 %)
2048.04	–	–	→ 1085.8
2051.45	–	–	→ 1649.8
2051.83	4+	–	→ 1233.9 (64 %), → 1085.8 (36 %), → 121.78
2053.52	–	–	→ 810.45, → 121.78
2055.8	–	–	→ 706.93
2057.52	7-	–	→ 1920.5 (39 %), → 1803.9 (6.6 %), → 1728.3 (5.4 %), → 1310.5 (6.6 %), → 1125.4 (25 %), → 706.93 (17 %)
2063.78	(1-,2,3-)	–	→ 1680.6, → 1041.1, → 963.36
2069.31	0+,1,2,3-	–	→ 1680.6, → 121.78
2070.83	3-,4,5-	–	→ 1221.6 (38 %), → 1041.1 (62 %)
2079.57	10+	–	→ 1879.1 (9.1 %), → 1666.5 (77 %), → 1609.3 (7.7 %), → 1125.4 (6.5 %)
2091.21	1-,2	–	→ 1041.1 (55 %), → 963.36 (45 %)
2091.66	–	–	→ 121.78
2096.82	3+,4	–	→ 1559.6, → 1371.7
2112.71	(2+,3,4+)	–	→ 1041.1, → 366.48, → 121.78
2120.98	7-	T½ = 2.4 ns	→ 2057.5 (40 %), → 1920.5 (60 %)
2127.17	0+,1,2	–	→ 1510.8 (4.1 %), → 810.45 (52 %), → 121.78 (44 %)
2129.84	(1+,2,3-)	–	→ 1233.9, → 963.36
2137.69	–	–	→ 810.45
2137.92	(2+,3,4+)	–	→ 366.48, → 121.78
2138.17	2+	–	→ 1041.1 (73 %), → 1023 (12 %), → 810.45 (11 %), → 684.75 (5.1 %)
2139.71	8+	–	→ 1879.1 (0.77 %), → 1728.3 (11 %), → 1505.8 (13 %), → 1125.4 (69 %), → 706.93 (6.1 %)
2146	–	–	–
2148.81	12+	–	→ 1609.3
2167	0+,1,2	–	→ 121.78
2172.6	1,2+	–	→ 1529.8 (37 %), → 1510.8 (56 %), → 684.75 (7.2 %)
2175.7	0+,1,2,3-	–	→ 121.78
2176.62	7-	–	→ 1666.5 (11 %), → 1505.8 (16 %), → 1310.5 (20 %), → 1221.6 (53 %)
2194	–	–	–
2201.2	0+,1,2	–	→ 121.78
2201.47	8-	–	→ 1945.9 (76 %), → 1930.2 (14 %), → 1879.1 (4.7 %), → 1125.4 (5.3 %)
2206	7+	–	→ 1945.9, → 1929.9, → 1728.3, → 1125.4, → 706.93
2214.98	8-	–	→ 2057.5 (38 %), → 1945.9 (28 %), → 1920.5 (34 %)
2224.8	1,2+	–	→ 0
2227.71	(5-,6,7-)	–	→ 1505.8 (35 %), → 1221.6 (65 %)
2237.3	1,2	–	→ 1510.8 (29 %), → 963.36 (43 %), → 121.78 (29 %)
2239.8	2+	–	→ 366.48 (5.8 %), → 121.78 (72 %), → 0 (22 %)
2263.9	6+,7,8+	–	→ 1125.4 (31 %), → 706.93 (69 %)
2268	2+	–	–
2269.87	8-	–	→ 2121
2284.96	0,1,2	–	→ 963.36
2287.4	0+,1,2,3-	–	→ 121.78
2290.37	9-	–	→ 1666.5 (25 %), → 1609.3 (23 %), → 1505.8 (3.6 %), → 1125.4 (48 %)
2295.3	1-,2	–	→ 1041.1 (36 %), → 963.36 (27 %), → 121.78 (36 %)
2308.6	–	–	→ 1125.4
2308.9	1,2+	–	→ 121.78 (56 %), → 0 (44 %)
2320.35	4+,5	–	→ 1803.9 (67 %), → 1023 (4.7 %), → 706.93 (8.7 %), → 366.48 (20 %)
2326.94	11-	–	→ 1879.1 (5.1 %), → 1609.3 (95 %)
2340	–	–	–
2348.76	–	–	→ 1666.5 (30 %), → 1505.8 (17 %), → 1125.4 (53 %)
2359.8	–	–	→ 1125.4
2367.3	1-,2	–	→ 1041.1 (38 %), → 963.36 (63 %)
2375.49	9+	–	→ 2201.2 (9.1 %), → 2139.7 (13 %), → 1946.2 (24 %), → 1609.3 (16 %), → 1125.4 (39 %)
2376.8	–	–	→ 121.78
2388.79	9-	–	→ 2215, → 2201.2, → 2057.5 (25 %), → 1666.5 (75 %)
2391.7	8+	–	→ 1666.5, → 1505.8, → 1125.4
2402.23	3,4+	–	→ 1757 (83 %), → 810.45 (9.9 %), → 121.78 (7.4 %)
2415	–	–	–
2423	–	–	–
2424.36	9-	–	→ 2269.9 (72 %), → 2121 (28 %)
2445.9	9-	–	→ 1879.1 (6.2 %), → 1666.5 (28 %), → 1505.8 (66 %)
2458.6	8+	–	→ 706.93
2482	3,4,5	–	→ 1757
2489	–	–	–
2506.29	7-,8,9-	–	→ 1879.1 (17 %), → 1505.8 (83 %)
2510.4	1(-)	Γ = 9.7 meV	→ 121.78 (51 %), → 0 (49 %)
2510.59	10-	–	→ 2375.5 (35 %), → 2201.5 (46 %), → 1879.1 (19 %)
2517.41	–	–	→ 1879.1 (28 %), → 1609.3 (72 %)
2525.69	12+	–	→ 2326.9 (7.4 %), → 2148.8 (3.8 %), → 2079.6 (83 %), → 1609.3 (6 %)
2541.6	1(+)	Γ = 5.8 meV	→ 121.78 (38 %), → 0 (62 %)
2544	–	–	–
2567.06	4+,5	–	→ 706.93 (25 %), → 366.48 (75 %)
2576.29	10-	–	→ 2424.4 (48 %), → 2388.8, → 2215 (52 %)
2588	9+	–	→ 2391.7, → 1125.4
2589.02	4+,5	–	→ 2004.2 (81 %), → 1371.7, → 706.93 (19 %)
2590.68	10-	–	→ 2424.4 (18 %), → 2388.8 (33 %), → 2269.9 (7.1 %), → 2215 (41 %)
2599.36	7-,8+	–	→ 1879.1 (21 %), → 1505.8 (31 %), → 1125.4 (25 %), → 706.93 (23 %)
2612	–	–	–
2641.09	11-	–	→ 2326.9 (31 %), → 2148.8 (22 %), → 2079.6 (9.1 %), → 1609.3 (38 %)
2643.4	1(-)	Γ = 47 meV	→ 121.78 (60 %), → 0 (40 %)
2662.47	10+	–	→ 2290.4 (16 %), → 2139.7 (18 %), → 2079.6 (29 %), → 1609.3 (22 %), → 1125.4 (15 %)
2663.4	1(+)	Γ = 8.8 meV	→ 121.78 (24 %), → 0 (76 %)
2687.8	0+,1,2	–	→ 121.78
2697	–	–	–
2712.5	–	–	→ 1609.3
2736.19	14+	–	→ 2148.8
2751.51	11-	–	→ 2590.7, → 2576.3, → 2424.4 (60 %), → 2388.8 (40 %)
2808.92	11-	–	→ 2079.6 (43 %), → 1879.1 (57 %)
2810	(10+)	–	→ 2079.6, → 1879.1
2818.1	1(+)	Γ = 14.1 meV	→ 121.78 (38 %), → 0 (62 %)
2832.85	11+	–	→ 2375.5
2833.3	13-	–	→ 2326.9 (15 %), → 2148.8 (85 %)
2841.89	–	–	→ 2326.9 (48 %), → 2148.8 (52 %)
2887.3	1(+)	Γ = 12 meV	→ 121.78 (26 %), → 0 (74 %)
2891.7	1(+)	Γ = 28 meV	→ 121.78 (26 %), → 0 (74 %)
2895.49	4+	–	→ 2402.2 (35 %), → 1371.7 (5.3 %), → 1085.8 (13 %), → 706.93 (19 %), → 366.48 (27 %)
2898.6	–	–	→ 2044.5
2901.39	12-	–	→ 2510.6
2905.17	10+	–	→ 2148.8 (3.4 %), → 1879.1 (26 %), → 1609.3 (30 %), → 1125.4 (40 %)
2925.5	0+,1,2	–	→ 121.78
2930.6	1(+)	Γ = 78 meV	→ 121.78 (33 %), → 0 (67 %)
2939.3	1(+)	Γ = 3.6 meV	→ 121.78 (32 %), → 0 (68 %)
2946.8	1(-)	Γ = 13 meV	→ 121.78 (64 %), → 0 (36 %)
2976.87	14+	–	→ 2525.7 (94 %), → 2148.8 (6.5 %)
2991.6	1(+)	Γ = 39 meV	→ 121.78 (29 %), → 0 (71 %)
3012.6	1(+)	Γ = 15 meV	→ 121.78 (32 %), → 0 (68 %)
3025.3	1(+)	Γ = 59 meV	→ 121.78 (30 %), → 0 (70 %)
3027	11+	–	→ 2588
3080.1	13-	–	→ 2148.8
3090.2	1(+)	Γ = 78 meV	→ 121.78 (40 %), → 0 (60 %)
3107.9	1(-)	Γ = 32 meV	→ 121.78 (52 %), → 0 (48 %)
3122.6	–	Γ = 9.1 meV	→ 121.78, → 0 (100 %)
3128.33	12+	–	→ 2148.8
3262.9	10+,11,12+	–	→ 2148.8 (49 %), → 1609.3 (51 %)
3281.7	1(+)	Γ = 22 meV	→ 121.78 (34 %), → 0 (66 %)
3292.82	14+	–	→ 2976.9 (31 %), → 2833.3 (23 %), → 2736.2 (9.9 %), → 2525.7 (36 %)
3352.26	12+	–	→ 2326.9 (28 %), → 2148.8 (46 %), → 1609.3 (26 %)
3365.02	16+	–	→ 2736.2
3378.39	14-	–	→ 2901.4
3383.35	15-	–	→ 2832.8 (22 %), → 2736.2 (78 %)
3390.9	13-	–	→ 2326.9
3422.1	1(-)	Γ = 53 meV	→ 121.78 (70 %), → 0 (30 %)
3462.95	16+	–	→ 2976.9 (80 %), → 2736.2 (20 %)
3708.8	–	Γ = 14.4 meV	→ 121.78, → 0 (100 %)
3794.1	–	Γ = 12.3 meV	→ 121.78 (20 %), → 0 (80 %)
3857.16	16+	–	→ 3462.9 (18 %), → 3383.3 (32 %), → 3292.8 (32 %), → 2976.9 (17 %)
3882.6	–	Γ = 18 meV	→ 121.78 (17 %), → 0 (83 %)
3931.2	14+	–	→ 2736.2 (20 %), → 2148.8 (80 %)
3973.2	17-	–	→ 3383.3 (47 %), → 3365 (53 %)
4004.64	18+	–	→ 3462.9 (55 %), → 3365 (45 %)
4047.7	18+	–	→ 3462.9 (38 %), → 3365 (62 %)
4524.8	16+	–	→ 2736.2
4749.56	20+	–	→ 4047.7
–	–	–	–
11300	0+	–	–
11530	2+	–	–
12800	1-	–	–
13200	3-	–	–
14900	2+	–	–
15440	0+	–	–
23000	3-	–	–
25100	1-	–	–