Iron: Properties: Isotopes

Iron: Properties

Isotopes

Natural
Abun. (%) Atomic
Mass Half-
life Decay Mode
/Energy (/MeV) Part. En.
/Intensity
(MeV/%) Cross-sect.
Ther. Neut.
(b) Spin
(h/2 pi) Magnetic
Dipl.Mom.
(nm) Electric
Quad. Mom.
(b) Gamma En.
/Intensity
(MeV/%)
⁴⁸Fe 47.98054 ß⁺/ 11.1
⁴⁹Fe 48.87361 0.08s ß⁺/ 13.1 7/2^- rad. an.
⁵⁰Fe 49.963
⁵¹Fe 50.956825 0.31s ß⁺/ 8.02 5/2^- rad. an.
^52mFe 46s ß⁺/ 4.4 12⁺ rad. an.
0.622 - 2.286
⁵²Fe 51.948114 8.28h ß⁺/ 2.37
E.C.,I.T. 0.804 0⁺ rad. an.
0.16868/ 99
0.377
^53mFe 2.6m I.T./ 3.0407 19/2^- 0.7011/ 99
1.0115/ 87
1.3281/ 87
2.3396/ 13
⁵³Fe 52.94531 8.51m ß⁺/ 3.774 2.4/ 42
2.8/ 57 7/2^- rad. an.
0.3779/ 42
1.2 - 3.2
⁵⁴Fe 5.9 % 53.939612 2.7 b 0⁺
⁵⁵Fe 54.938296 2.73y E.C./ 0.2314 12 b 3/2^-
⁵⁶Fe 91.72 % 55.934939 2.6 b 0⁺
⁵⁷Fe 2.1 % 56.935396 2 b 1/2^- 0.0906 nm
⁵⁸Fe 0.28 % 57.933277 1.3 b 0⁺
⁵⁹Fe 58.924877 44.51d ß^-/ 1.565 0.273/ 48
0.475/ 51 <10 b 3/2^- 0.29 nm 1.099/ 57
1.292/ 43
0.14 - 1.48
⁶⁰Fe 59.93408 1.5x10⁶y ß^-/ 0.243 0.184/ 100 0⁺ 0.0586/ 100
⁶¹Fe 60.936748 6m ß^-/ 3.97 2.5/ 13
2.63/ 54
2.8/ 31 1.205/ 44
1.028/ 43
0.12 - 3.37
⁶²Fe 61.936773 68s ß^-/ 2.8 2.5/ 100 0⁺ 0.5061/ 100
⁶³Fe 62.94075 6s ß^- 5/2^- 0.995
1.365 - 1.427
⁶⁴Fe 2s ß^-
⁶⁵Fe
⁶⁷Fe
⁶⁸Fe 10s

	Natural Abun. (%)	Atomic Mass	Half- life	Decay Mode /Energy (/MeV)	Part. En. /Intensity (MeV/%)	Cross-sect. Ther. Neut. (b)	Spin (h/2 pi)	Magnetic Dipl.Mom. (nm)	Electric Quad. Mom. (b)	Gamma En. /Intensity (MeV/%)
⁴⁸Fe		47.98054		ß⁺/ 11.1
⁴⁹Fe		48.87361	0.08s	ß⁺/ 13.1			7/2^-			rad. an.
⁵⁰Fe		49.963
⁵¹Fe		50.956825	0.31s	ß⁺/ 8.02			5/2^-			rad. an.
^52mFe			46s	ß⁺/ 4.4			12⁺			rad. an. 0.622 - 2.286
⁵²Fe		51.948114	8.28h	ß⁺/ 2.37 E.C.,I.T.	0.804		0⁺			rad. an. 0.16868/ 99 0.377
^53mFe			2.6m	I.T./ 3.0407			19/2^-			0.7011/ 99 1.0115/ 87 1.3281/ 87 2.3396/ 13
⁵³Fe		52.94531	8.51m	ß⁺/ 3.774	2.4/ 42 2.8/ 57		7/2^-			rad. an. 0.3779/ 42 1.2 - 3.2
⁵⁴Fe	5.9 %	53.939612				2.7 b	0⁺
⁵⁵Fe		54.938296	2.73y	E.C./ 0.2314		12 b	3/2^-
⁵⁶Fe	91.72 %	55.934939				2.6 b	0⁺
⁵⁷Fe	2.1 %	56.935396				2 b	1/2^-	0.0906 nm
⁵⁸Fe	0.28 %	57.933277				1.3 b	0⁺
⁵⁹Fe		58.924877	44.51d	ß^-/ 1.565	0.273/ 48 0.475/ 51	<10 b	3/2^-	0.29 nm		1.099/ 57 1.292/ 43 0.14 - 1.48
⁶⁰Fe		59.93408	1.5x10⁶y	ß^-/ 0.243	0.184/ 100		0⁺			0.0586/ 100
⁶¹Fe		60.936748	6m	ß^-/ 3.97	2.5/ 13 2.63/ 54 2.8/ 31					1.205/ 44 1.028/ 43 0.12 - 3.37
⁶²Fe		61.936773	68s	ß^-/ 2.8	2.5/ 100		0⁺			0.5061/ 100
⁶³Fe		62.94075	6s	ß^-			5/2^-			0.995 1.365 - 1.427
⁶⁴Fe			2s	ß^-
⁶⁵Fe
⁶⁷Fe
⁶⁸Fe			10s