鉕的同位素

主要的鉕同位素

同位素 衰變 豐度 半衰期 (t1/2) 方式 能量 （MeV） 產物 145Pm 人造 17.7 年 ε 0.164 145Nd α 2.322 141Pr 146Pm 人造 5.53 年 ε 1.472 146Nd β− 1.542 146Sm 147Pm 痕量 2.6234 年 β− 0.224 147Sm 149Pm 痕量 53.08 小時 β− 1.072 149Sm

←Nd（60） Sm（62）→

檢視 討論 編輯

鉕沒有穩定同位素。

圖表

符號	Z	N	同位素質量（u） [n 1][n 2]	半衰期 [n 1][n 2]	衰變 方式[1]	衰變 產物 [n 3][n 4]	原子核 自旋[n 1]	相對豐度 （莫耳分率）
	激發能量[n 1][n 2]
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 [>200 ns]	β+	129Nd	5/2+#
130Pm	61	69	129.94045(32)#	2.6(2) s	β+	130Nd	(5+,6+,4+)
					β+, p （不常見）	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	ε	145Nd	5/2+
					α (2.8×10−7%)	141Pr
146Pm	61	85	145.914696(5)	5.53(5) a	ε (66%)	146Nd	3-
					β− (34%)	146Sm
147Pm[n 5]	61	86	146.9151385(26)	2.6234(2) a	β−	147Sm	7/2+	痕量[n 6]
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[n 5]	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[n 5]	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)#	7000164800000000000♠1.648+0.43 −0.42 s[2]	β−	159Sm	5/2−#
160Pm	61	99	159.94299(32)#	6999874000000000000♠874+16 −12 ms[2]	β−	160Sm
161Pm	61	100	160.94586(54)#	6999724000000000000♠724+20 −12 ms[2]	β− (98.91%)	161Sm	5/2−#
					β−, n (1.09%)	160Sm
162Pm	61	101	161.95029(75)#	6999467000000000000♠467+38 −18 ms[2]	β− (98.21%)	162Sm
					β−, n (1.79%)	161Sm
163Pm	61	102	162.95368(86)#	6999362000000000000♠362+42 −30 ms[2]	β− (95%)	163Sm	5/2−#
					β−, n (1.79%)	162Sm
164Pm	61	103		6999280000000000000♠280+38 −33 ms[2]	β− (93.82%)	164Sm
					β−, n (6.18%)	163Sm
165Pm	61	104		6999297000000000000♠297+111 −101 ms[2]	β− (86.74%)	165Sm
					β−, n (13.26%)	164Sm
166Pm	61	105		6999228000000000000♠228+131 −112 ms[2]	β−	166Sm
					β−, n	165Sm

1. 畫上#號的數據代表沒有經過實驗的証明，僅為理論推測。
2. 用括號括起來的數據代表不確定性。
3. 穩定的衰變產物以粗體表示。
4. 半衰期超過5億年的衰變產物以粗斜體表示。
5. 裂變產物
6. 裂變產物，也是¹⁵¹Eu的衰變產物

←	同位素列表	→
釹的同位素	鉕的同位素	釤的同位素

參考文獻

1. Universal Nuclide Chart. nucleonica. [2015-09-20]. （原始內容存檔於2017-02-19）. 含有內容需登入查看的頁面 (link)
2. Kiss, G. G.; Vitéz-Sveiczer, A.; Saito, Y.; et al. Measuring the β-decay properties of neutron-rich exotic Pm, Sm, Eu, and Gd isotopes to constrain the nucleosynthesis yields in the rare-earth region. The Astrophysical Journal. 2022, 936 (107): 107. Bibcode:2022ApJ...936..107K. doi:10.3847/1538-4357/ac80fc .

• Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
• Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
  • Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties （頁面存檔備份，存於互聯網檔案館）, Nuc. Phys. A 729, pp. 3-128 (2003).
  • National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database （頁面存檔備份，存於互聯網檔案館） (retrieved Sept. 2005).
  • David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.