鉕的同位素

**主要的鉕同位素**
β−	146Sm
←Nd（60）	Sm（62）→

钷（原子量:[145]）的同位素，沒有一種是穩定的。

圖表

符號	Z（p ）	N（n ）	同位素質量（u）	半衰期	衰變方式[1][n 1]	衰變產物[n 2]	原子核自旋
符號	激發能量			半衰期	衰變方式[1][n 1]	衰變產物[n 2]	原子核自旋
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+#
¹²⁸Pm	61	67	127.94842(43)#	1.0(3) s	p	¹²⁷Nd	6+#
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+)
¹³⁰Pm	61	69	129.94045(32)#	2.6(2) s	β⁺, p （不常見）	¹²⁹Pr	(5+,6+,4+)
¹³¹Pm	61	70	130.93587(21)#	6.3(8) s	β⁺, p	¹³⁰Pr	5/2+#
¹³¹Pm	61	70	130.93587(21)#	6.3(8) s	β⁺	¹³¹Nd	5/2+#
¹³²Pm	61	71	131.93375(21)#	6.2(6) s	β⁺	¹³²Nd	(3+)
¹³²Pm	61	71	131.93375(21)#	6.2(6) s	β⁺, p (5×10⁻⁵%)	¹³¹Pr	(3+)
¹³³Pm	61	72	132.92978(5)	15(3) s	β⁺	¹³³Nd	(3/2+)
^133mPm	130.4(10) keV			10# s	β⁺	¹³³Nd	(11/2-)
^133mPm	130.4(10) keV			10# s	IT	¹³³Pm	(11/2-)
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)-
^139mPm	188.7(3) keV			180(20) ms	β⁺ (.17%)	¹³⁹Nd	(11/2)-
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+
¹⁴⁵Pm	61	84	144.912749(3)	17.7(4) a	α (2.8×10⁻⁷%)	¹⁴¹Pr	5/2+
¹⁴⁶Pm	61	85	145.914696(5)	5.53(5) a	ε (66%)	¹⁴⁶Nd	3-
¹⁴⁶Pm	61	85	145.914696(5)	5.53(5) a	β⁻ (34%)	¹⁴⁶Sm	3-
¹⁴⁷Pm[n 3]	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-
^148mPm	137.9(3) keV			41.29(11) d	IT (5%)	¹⁴⁸Pm	5-,6-
¹⁴⁹Pm[n 3]	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 3]	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-#

備註：畫上#號的數據代表沒有經過實驗的証明，只是理論推測而已，而用括號括起來的代表數據不確定性。

←	同位素列表	→
釹的同位素	钷的同位素	釤的同位素

註釋

縮寫的涵義：
ε：电子俘获
 IT：核異構轉變
 β⁺：正电子发射
 β⁻：貝他衰變
Bold for stable isotopes, bold italics for nearly-stable isotopes (half-life longer than the age of the universe)
Fission product

参考文獻

. nucleonica. [2015-09-20]. （原始内容存档于2017-02-19）. .

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).
Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report) 页面存档备份，存于. Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) 页面存档备份，存于.
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 页面存档备份，存于, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database 页面存档备份，存于 (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.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[2] 縮寫的涵義：
ε：电子俘获
IT：核異構轉變
β⁺：正电子发射
β⁻：貝他衰變

[3] Bold for stable isotopes, bold italics for nearly-stable isotopes (half-life longer than the age of the universe)

[FP-4] Fission product

[iso_data-1] . nucleonica. [2015-09-20]. （原始内容存档于2017-02-19）. .