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)
54Fe 55Fe




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.229.6 ± 1.3--
0.027.6 ± 1.8--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is weighted mean from CKD06, BCR83, AMB77a, AMB77b, BSE74, and BeS75.
Previous MACS vs. kT table multiplied by 1.072.
Last review: January 24th, 2007
List of all available values
originalrenorm.yeartypeCommentRef
30.3 ± 3.0
2006cVdG, Act. + AMS, Au:RaK88CKD06
27.6 ± 1.8
1983rLinac, TOF, 10B, 56Fe:Sat.BCR83
33.6 ± 2.7
1977cLinac, TOF, 6Li, Au:Sat.AMB77a,AMB77b
28 ± 9
1975cVdG, TOF, Au:596mb Kom69BSE74,BeS75
34 ± 10
1971eAGM71
21.61
2006eendfb7
21.61
2004ejeff31
21.61
2002ejendl33
28
1978tWFH78
56.2
2002tMOST 2002Gor02
54.0
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:
cDirectly quoted from the reference itself
rRecalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
119
81
56
43
35
29.6 ± 1.3
23.9
20.9
19.2
17.4
16.4
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
7.10
6.84
5.79
5.13
4.67
4.33
4.03
3.94
3.97
4.15
4.38

MACS:
Reference: BCR83
Procedure: 'e' (The Maxwellian-averaged cross sections (MACS) from kT=5 keV to 100 keV are obtained from experimental data; the relative uncertainties are similar to those quoted for the 30 keV data.)
Year: 1983, 2006

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

Rate:
Reaction rate NA<σv> given in 106 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
54Ni
104.00 ms
β+
55Ni
202.00 ms
β+
56Ni
6.08 d
β+
57Ni
1.48 d
β+
58Ni
68.077
38.7 mb
53Co
240.00 ms
β+
54Co
193.00 ms
β+
55Co
17.53 h
β+
56Co
77.23 d
β+
57Co
271.76 d
β+
52Fe
8.28 h
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
51Mn
46.20 m
β+
52Mn
5.59 d
β+
53Mn
3.74 Ma
β+
54Mn
312.15 d
β+
55Mn
100
39.6 mb
50Cr
4.345
49 mb
51Cr
27.70 d
87 mb, β+
52Cr
83.789
8.8 mb
53Cr
9.501
58 mb
54Cr
2.365
6.7 mb
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Isotope: Iron
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