鐵嘅同位素

鐵有34個同位素，其中有3個係穩定嘅。

圖表

符號	Z（p）	N（n）	質量（u）	半衰期	原子核自旋	相對豐度	相對豐度嘅變化率
符號	激發能量			半衰期	原子核自旋	相對豐度	相對豐度嘅變化率
⁴⁵Fe	26	19	45.01458(24)#	4.9(15) ms [3.8(+20-8) ms]	3/2+#
⁴⁶Fe	26	20	46.00081(38)#	9(4) ms [12(+4-3) ms]	0+
⁴⁷Fe	26	21	46.99289(28)#	21.8(7) ms	7/2-#
⁴⁸Fe	26	22	47.98050(8)#	44(7) ms	0+
⁴⁹Fe	26	23	48.97361(16)#	70(3) ms	(7/2-)
⁵⁰Fe	26	24	49.96299(6)	155(11) ms	0+
⁵¹Fe	26	25	50.956820(16)	305(5) ms	5/2-
⁵²Fe	26	26	51.948114(7)	8.275(8) h	0+
^52mFe	6.81(13) MeV			45.9(6) s	(12+)#
⁵³Fe	26	27	52.9453079(19)	8.51(2) min	7/2-
^53mFe	3040.4(3) keV			2.526(24) min	19/2-
⁵⁴Fe	26	28	53.9396105(7)	穩定 [>3.1E+22 a]	0+	0.05845(35)	0.05837-0.05861
^54mFe	6526.9(6) keV			364(7) ns	10+
⁵⁵Fe	26	29	54.9382934(7)	2.737(11) a	3/2-
⁵⁶Fe	26	30	55.9349375(7)	穩定	0+	0.91754(36)	0.91742-0.91760
⁵⁷Fe	26	31	56.9353940(7)	穩定	1/2-	0.02119(10)	0.02116-0.02121
⁵⁸Fe	26	32	57.9332756(8)	穩定	0+	0.00282(4)	0.00281-0.00282
⁵⁹Fe	26	33	58.9348755(8)	44.495(9) d	3/2-
⁶⁰Fe	26	34	59.934072(4)	1.5(3)E+6 a	0+
⁶¹Fe	26	35	60.936745(21)	5.98(6) min	3/2-,5/2-
^61mFe	861(3) keV			250(10) ns	9/2+#
⁶²Fe	26	36	61.936767(16)	68(2) s	0+
⁶³Fe	26	37	62.94037(18)	6.1(6) s	(5/2)-
⁶⁴Fe	26	38	63.9412(3)	2.0(2) s	0+
⁶⁵Fe	26	39	64.94538(26)	1.3(3) s	1/2-#
^65mFe	364(3) keV			430(130) ns	(5/2-)
⁶⁶Fe	26	40	65.94678(32)	440(40) ms	0+
⁶⁷Fe	26	41	66.95095(45)	394(9) ms	1/2-#
^67mFe	367(3) keV			64(17) µs	(5/2-)
⁶⁸Fe	26	42	67.95370(75)	187(6) ms	0+
⁶⁹Fe	26	43	68.95878(54)#	109(9) ms	1/2-#
⁷⁰Fe	26	44	69.96146(64)#	94(17) ms	0+
⁷¹Fe	26	45	70.96672(86)#	30# ms [>300 ns]	7/2+#
⁷²Fe	26	46	71.96962(86)#	10# ms [>300 ns]	0+

備註：有#嘅數據代表冇經過實驗嘅證明，只係理論推測，而用咗括號括係代表數據唔確定。

參攷

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). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
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, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (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.

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