| s-process | p-process |
Available isotopes for Silicon (Z=14)
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
32Si 
33Si
33Si
| Total MACS at 30keV: | 0.12 | ± | 0.03* | 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 | 0.12 ± 0.03* | - | - |
(Version 0.0 corresponds to Bao et al.)
Comment
New dataset. No experimental data available. New rec. value is theoretical prediction from TENDL-2015 assuming 25% uncertainty.
Last review: April 2016
Last review: April 2016
List of all available values
| original | renorm. | year | type | Comment | Ref |
0.124 | 2015 | t | TENDL-2015 using the TALYS code | tendl15 | |
0.124 | 2014 | e | JEFF-3.2 | jeff32 | |
0.586 | 2005 | e | JEFF-3.0A | jeff30A | |
1.708 | 2005 | t | MOST 2005 | Gor05 | |
1.782 | 2002 | t | MOST 2002 | Gor02 | |
0.367 | 2000 | t | NON-SMOKER | RaT99 |
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:
| t | Theoretical value |
| e | Evaluated value taken directly from the reference |
MACS, SEF and Reaction Rates for different energies
| Energy | 5keV | 8keV | 10keV | 15keV | 20keV | 25keV | 30keV | 40keV | 50keV | 60keV | 80keV | 100keV |
| MACS | 0.81 | - | 0.43 | 0.28 | 0.20 | 0.16 | 0.12 ± 0.03 | 0.086 | 0.065 | 0.052 | 0.040 | 0.035 |
| 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 | 4.86 | - | 3.65 | 2.91 | 2.40 | 2.15 | 1.77 | 1.46 | 1.23 | 1.08 | 0.96 | 0.94 |
MACS:
Reference: tendl15
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: 2016
X-factor:
Reference:
Year:
SEF (Stellar enhancement factor):
Reference:
Year:
Comment:
Rate:
Reaction rate NA<σv> given in 104 cm3/mole/s, including SEF
Chart of nuclei
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Isotope: Silicon