| s-process | p-process |
Available isotopes for Calcium (Z=20)
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
40Ca 
41Ca
41Ca
| Total MACS at 30keV: | 6.18 | ± | 0.37 | mb |
Cross sections do not include stellar enhancement factors!
History
| Version | Total MACS [mb] | Partial to gs [mb] | Partial to isomer [mb] |
|---|---|---|---|
| 1.0 | 6.18 ± 0.37 | - | - |
| 0.3 | 5.73 ± 0.34 | - | - |
| 0.0 | 6.7 ± 0.7 | - | - |
(Version 0.0 corresponds to Bao et al.)
Comment
New rec. values uses energy dependence from jendl33,endfb7,jeff31. Previous value renormalized by f= 1.0785 (632 mb/586 mb) due to corrected Gold cross section from RaK88 for activations.
Last review: May 2016
Last review: May 2016
List of all available values
| original | renorm. | year | type | Comment | Ref |
5.73 ± 0.34 | 6.18 ± 0.37 | 2008,2014 | c | VdG, Act. + AMS, Au:RaK88 corrected by 632/586= 1.0785; en.dep. from jendl33,endfb7,jeff31 | DHK09 |
6.7 ± 0.7 | 1976 | c | Linac, TOF, 6Li, Au:Sat. | MAB76c,MAB77b | |
10 ± 3 | 1976 | c | VdG, TOF, E(n)= 40 keV | BAK76 | |
5.46 | 2015 | e | TENDL-2015 using the TALYS code | tendl15 | |
5.14 | 2011 | e | ENDF/B-VII.1 | endfb71 | |
5.14 | 2011 | e | JENDL-4.0 | jendl40 | |
5.14 | 2004 | e | JEFF-3.1 | jeff31 | |
13.9 | 2005 | t | MOST 2005 | Gor05 | |
24.1 | 2002 | t | MOST 2002 | Gor02 | |
12.3 | 2000 | t | NON-SMOKER | RaT99 | |
5.8 | 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:
| c | Directly quoted from the reference itself |
| 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 | 12.90 | - | 12.39 | 9.95 | 8.15 | 6.97 | 6.18 ± 0.37 | 5.32 | 4.89 | 4.62 | 4.22 | 3.87 |
| 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 | 7.72 | - | 10.49 | 10.32 | 9.76 | 9.33 | 9.06 | 9.01 | 9.26 | 9.58 | 10.11 | 10.36 |
MACS:
Reference: DHK09,jendl33,endfb7,jeff31.
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: 2008,2014
X-factor:
Reference:
Year:
SEF (Stellar enhancement factor):
Reference:
Year:
Comment:
Rate:
Reaction rate NA<σv> given in 105 cm3/mole/s, including SEF
Chart of nuclei
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Isotope: Calcium