Isotopes of Promethium - Table

Table

nuclide
symbol		 Z(p) N(n)
isotopic mass (u)
 half-life decay
mode(s)		 daughter
isotope(s)		 nuclear
spin
excitation energy
126Pm 61 65 125.95752(54)# 0.5# s
127Pm 61 66 126.95163(64)# 1# s 5/2+#
128Pm 61 67 127.94842(43)# 1.0(3) s β+ 128Nd 6+#
p 127Nd
129Pm 61 68 128.94316(43)# 3# s β+ 129Nd 5/2+#
130Pm 61 69 129.94045(32)# 2.6(2) s β+ 130Nd (5+,6+,4+)
β+, p (rare) 129Pr
131Pm 61 70 130.93587(21)# 6.3(8) s β+, p 130Pr 5/2+#
β+ 131Nd
132Pm 61 71 131.93375(21)# 6.2(6) s β+ 132Nd (3+)
β+, p (5×10−5%) 131Pr
133Pm 61 72 132.92978(5) 15(3) s β+ 133Nd (3/2+)
133mPm 130.4(10) keV 10# s β+ 133Nd (11/2-)
IT 133Pm
134Pm 61 73 133.92835(6) 22(1) s β+ 134Nd (5+)
134mPm 0(100)# keV ~5 s IT 134Pm (2+)
135Pm 61 74 134.92488(6) 49(3) s β+ 135Nd (5/2+,3/2+)
135mPm 50(100)# keV 40(3) s β+ 135Nd (11/2-)
136Pm 61 75 135.92357(8) 107(6) s β+ 136Nd (5-)
136mPm 130(120) keV 47(2) s β+ 136Nd (2+)
137Pm 61 76 136.920479(14) 2# min β+ 137Nd 5/2+#
137mPm 150(50) keV 2.4(1) min β+ 137Nd 11/2-
138Pm 61 77 137.919548(30) 10(2) s β+ 138Nd 1+#
138mPm 30(30) keV 3.24(5) min β+ 138Nd 5-#
139Pm 61 78 138.916804(14) 4.15(5) min β+ 139Nd (5/2)+
139mPm 188.7(3) keV 180(20) ms IT (99.83%) 139Pm (11/2)-
β+ (.17%) 139Nd
140Pm 61 79 139.91604(4) 9.2(2) s β+ 140Nd 1+
140mPm 420(40) keV 5.95(5) min β+ 140Nd 8-
141Pm 61 80 140.913555(15) 20.90(5) min β+ 141Nd 5/2+
141m1Pm 628.40(10) keV 630(20) ns 11/2-
141m2Pm 2530.9(5) keV >2 µs
142Pm 61 81 141.912874(27) 40.5(5) s β+ 142Nd 1+
142mPm 883.17(16) keV 2.0(2) ms IT 142Pm (8)-
143Pm 61 82 142.910933(4) 265(7) d β+ 143Nd 5/2+
144Pm 61 83 143.912591(3) 363(14) d β+ 144Nd 5-
144m1Pm 840.90(5) keV 780(200) ns (9)+
144m2Pm 8595.8(22) keV ~2.7 µs (27+)
145Pm 61 84 144.912749(3) 17.7(4) a EC 145Nd 5/2+
α (2.8×10−7%) 141Pr
146Pm 61 85 145.914696(5) 5.53(5) a EC (66%) 146Nd 3-
β- (34%) 146Sm
147Pm 61 86 146.9151385(26) 2.6234(2) a β- 147Sm 7/2+
148Pm 61 87 147.917475(7) 5.368(2) d β- 148Sm 1-
148mPm 137.9(3) keV 41.29(11) d β- (95%) 148Sm 5-,6-
IT (5%) 148Pm
149Pm 61 88 148.918334(4) 53.08(5) h β- 149Sm 7/2+
149mPm 240.214(7) keV 35(3) µs 11/2-
150Pm 61 89 149.920984(22) 2.68(2) h β- 150Sm (1-)
151Pm 61 90 150.921207(6) 28.40(4) h β- 151Sm 5/2+
152Pm 61 91 151.923497(28) 4.12(8) min β- 152Sm 1+
152m1Pm 140(90) keV 7.52(8) min 4-
152m2Pm 250(150)# keV 13.8(2) min (8)
153Pm 61 92 152.924117(12) 5.25(2) min β- 153Sm 5/2-
154Pm 61 93 153.92646(5) 1.73(10) min β- 154Sm (0,1)
154mPm 120(120) keV 2.68(7) min β- 154Sm (3,4)
155Pm 61 94 154.92810(3) 41.5(2) s β- 155Sm (5/2-)
156Pm 61 95 155.93106(4) 26.70(10) s β- 156Sm 4-
157Pm 61 96 156.93304(12) 10.56(10) s β- 157Sm (5/2-)
158Pm 61 97 157.93656(14) 4.8(5) s β- 158Sm
159Pm 61 98 158.93897(21)# 1.47(15) s β- 159Sm 5/2-#
160Pm 61 99 159.94299(32)# 2# s β- 160Sm
161Pm 61 100 160.94586(54)# 700# ms β- 161Sm 5/2-#
162Pm 61 101 161.95029(75)# 500# ms β- 162Sm
163Pm 61 102 162.95368(86)# 200# ms β- 163Sm 5/2-#

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