Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Iron (Z=26)
  54Fe   55Fe   56Fe   57Fe   58Fe   60Fe
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
55Fe 56Fe




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.075 ± 12*--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
81
2000tRaT99
46
1978tWFH78
115
2002tMOST 2002Gor02
104
2005tMOST 2005Gor05


Original:MACS [<σ v>/vT] (mb) for kT=30 keV, based on the published cross sections except where indicated otherwise.
Renorm:MACS [<σ v>/vT] (mb) for kT=30 keV for which the reference or standard cross section was meanwhile improved.
Type: The letters and numbers in the column labelled 'type' give information on how the cross section has been obtained:
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
367
175
124
100
85
75 ± 12
62
54
48
40
35
SEF1.001.001.001.001.001.001.001.001.001.000.99
Rate
2.19
1.48
1.28
1.19
1.13
1.10
1.05
1.02
0.99
0.95
0.93

MACS:
Reference:
Procedure: 't' (The MACS from kT=5 keV to 100 keV are obtained from theoretical calculations with corresponding uncertainties between 25 and 50% in most cases.)
Year: 2000

SEF (Stellar enhancement factor):
Reference: Rau09
Year: 2009
Comment:

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
55Ni
202.00 ms
β+
56Ni
6.08 d
β+
57Ni
1.48 d
β+
58Ni
68.077%
38.7 mb
59Ni
75.99 ka
87 mb, β+
54Co
193.00 ms
β+
55Co
17.53 h
β+
56Co
77.23 d
β+
57Co
271.76 d
β+
58Co
70.86 d
β+
53Fe
8.51 m
β+
54Fe
5.845%
27.6 mb
55Fe
2.74 a
75 mb, β+
56Fe
91.754%
11.7 mb
57Fe
2.119%
40 mb
52Mn
5.59 d
β+
53Mn
3.74 Ma
β+
54Mn
312.15 d
β+
55Mn
100%
39.6 mb
56Mn
2.58 h
β-
51Cr
27.70 d
87 mb, β+
52Cr
83.789%
8.8 mb
53Cr
9.501%
58 mb
54Cr
2.365%
6.7 mb
55Cr
3.50 m
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Iron