| s-process | p-process |
Available isotopes for Iron (Z=26)
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
58Fe 
59Fe
59Fe
| Total MACS at 30keV: | 14.3 | ± | 0.9 | mb |
Cross sections do not include stellar enhancement factors!
History
| Version | Total MACS [mb] | Partial to gs [mb] | Partial to isomer [mb] |
|---|---|---|---|
| 1.0 | 14.3 ± 0.9 | - | - |
| 0.3 | 13.5 ± 0.7 | - | - |
| 0.0 | 12.1 ± 1.3 | - | - |
(Version 0.0 corresponds to Bao et al.)
Comment
Rec. value is from HKU08, renormalized by f= 1.0785 (632 mb/586 mb) due to corrected Gold cross section from RaK88 for activations. Used energy dependence from jeff32. Uncertainties from covariances of JEFF-3.2, extrapolated to exp. unc. of HKU08
Last review: June 2016
Last review: June 2016
List of all available values
| original | renorm. | year | type | Comment | Ref |
14.5 ± 0.7kT= 25keV | 14.3 ± 0.9 | 2008,2016 | r | VdG, Act., Au:RaK88 corrected by 632/586= 1.0785; en. dep. from JEFF-3.2 | HKU08 |
14.5 ± 0.7kT= 25keV | 13.5 ± 0.7 | 2008 | c | VdG, Act., Au:RaK88 | HKU08 |
14.3 ± 1.3 | 12.1 | 1983 | r | VdG, TOF, Au:(B-IV)+(B-V) | KWH83,AlM80 |
15.4 ± 1.5 | 1980 | c,2 | Linac, TOF, 6Li, Au:Sat., k=0.9655 | AlM80 | |
14.1 | 2015 | e | TENDL-2015 using the TALYS code | tendl15 | |
15.1 ± 3.7 | 2014 | e | JEFF-3.2 incl. covariance data | jeff32 | |
19.76 | 2011 | e | ENDF/B-VII.1 | endfb71 | |
14.06 | 2011 | e | JENDL-4.0 | jendl40 | |
15.06 | 2004 | e | JEFF-3.1 | jeff31 | |
4.5 | 1971 | e | AGM71 | ||
25.1 | 2005 | t | MOST 2005 | Gor05 | |
25.0 | 2002 | t | MOST 2002 | Gor02 | |
12.9 | 2000 | t | NON-SMOKER | RaT99 | |
6.6 | 1981 | t | Har81 | ||
9.5 | 1978 | t | WFH78 |
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:
| r | Recalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections |
| c | Directly quoted from the reference itself |
| 2 | Including k from Ref. ABM82, where k is a correction factor which has been applied to the originally reported cross section |
| e | Evaluated value taken directly from the reference |
| t | Theoretical value |
MACS, SEF and Reaction Rates for different energies
| Energy | 5keV | 8keV | 10keV | 15keV | 20keV | 25keV | 30keV | 40keV | 50keV | 60keV | 80keV | 100keV |
| MACS | 33.1 ± 6.2 | - | 25.5 ± 4.8 | 20.5 ± 3.5 | 17.5 ± 2.1 | 15.6 ± 0.7 | 14.3 ± 0.9 | 12.5 ± 1.1 | 11.3 ± 1.4 | 10.4 ± 1.6 | 9.0 ± 1.9 | 8.1 ± 2.1 |
| Xfactor | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| SEF | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Rate | 1.97 | - | 2.15 | 2.12 | 2.09 | 2.08 | 2.09 | 2.11 | 2.13 | 2.15 | 2.15 | 2.16 |
MACS:
Reference: HKU08, jeff32
Procedure: 'e+t' (The MACS from kT=5 keV to 100 keV are derived from calculated cross sections, which are then normalized to experimental data, e.g. to the values at kT=25 keV obtained in activation measurements. In these cases the uncertainties should be linearly increased below 25 and above 30 keV to reach about 30% at the extreme kT values.)
Year: 2008,2016
X-factor:
Reference:
Year:
SEF (Stellar enhancement factor):
Reference:
Year:
Comment:
Rate:
Reaction rate NA<σv> given in 106 cm3/mole/s, including SEF
Chart of nuclei
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Isotope: Iron