| s-process | p-process |
Available isotopes for Nickel (Z=28)
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
59Ni 
60Ni
60Ni
| Total MACS at 30keV: | 58 | ± | 12* | mb |
Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
| Version | Total MACS [mb] | Partial to gs [mb] | Partial to isomer [mb] |
|---|---|---|---|
| 1.0 | 58 ± 12* | - | - |
| 0.0 | 87 ± 14* | - | - |
(Version 0.0 corresponds to Bao et al.)
Comment
Rec. value average from evaluated libraries. Difference between tendl15,jendl40 and endfb71/jeff31 solely due to different statistical models used in the unresolved resonance region. Uncertainty is difference between evaluations.
Last review: February 2013
Last review: February 2013
List of all available values
| original | renorm. | year | type | Comment | Ref |
59.5 | 2015 | e+t | TENDL-2015 using the TALYS code; data up to 10 keV from Har76 | tendl15 | |
69.6 | 2011 | e+t | ENDF/B-VII.1; data up to 10 keV from Har76 | endfb71 | |
45.1 | 2011 | e+t | JENDL-4.0; data up to 10 keV from Har76 | jendl40 | |
69.6 | 2004 | e+t | JEFF-3.1; data up to 10 keV from Har76 | jeff31 | |
133 | 2005 | t | MOST 2005 | Gor05 | |
93.4 | 2002 | t | MOST 2002 | Gor02 | |
92.4 | 2000 | t | NON-SMOKER | RaT99 | |
135 | 1981 | t | Har81 | ||
72 | 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:
| 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 | 347 ± 14 | - | 158 ± 23 | 104 ± 19 | 79.8 ± 15.6 | 66.3 ± 13.2 | 57.7 ± 12.0 | 47.1 ± 11.3 | 40.7 ± 11.2 | 36.3 ± 11.0 | 30.2 ± 10.5 | 26.2 ± 9.8 |
| Xfactor | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.99 | 0.97 |
| SEF | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.99 | 0.98 |
| Rate | 2.07 | - | 1.33 | 1.07 | 0.95 | 0.88 | 0.84 | 0.79 | 0.77 | 0.75 | 0.71 | 0.68 |
MACS:
Reference: Har76, jendl40, endfb71, jeff31, tendl15
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: 2016,1976
X-factor:
Reference:
Year:
SEF (Stellar enhancement factor):
Reference:
Year:
Comment:
Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Chart of nuclei
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Isotope: Nickel