| s-process | p-process |
Available isotopes for Samarium (Z=62)
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
144Sm 
145Sm
145Sm
| Total MACS at 30keV: | 88.0 | ± | 6.1 | mb |
Cross sections do not include stellar enhancement factors!
History
| Version | Total MACS [mb] | Partial to gs [mb] | Partial to isomer [mb] |
|---|---|---|---|
| 1.0 | 88.0 ± 6.1 | - | - |
| 0.0 | 92 ± 6 | - | - |
(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is average from recent evaluations (endfb71,jendl40). Uncertainty is deviation between both evaluations plus 6.5% as in MHH93.
Last review: August 2013
Last review: August 2013
List of all available values
| original | renorm. | year | type | Comment | Ref |
92 ± 6 | 1993 | c | Linac, TOF, 6Li, Au:Sat. | MHH93 | |
92 ± 9 | 85 | 1978 | b | VdG, TOF, 10B:Mag75, Au:628mb(kT=30keV) | KYP78 |
150 ± 70 | 1967 | c | VdG, TOF, 181Ta:762mb | MaG67a | |
87.7 | 2011 | e | ENDF/B-VII.1 | endfb71 | |
88.3 | 2011 | e | JENDL-4.0 | jendl40 | |
275.9 | 2004 | e | JEFF-3.1 | jeff31 | |
120 ± 55 | 1971 | e | AGM71 | ||
38.6 | 2005 | t | MOST 2005 | Gor05 | |
37.1 | 2002 | t | MOST 2002 | Gor02 | |
209 | 2000 | t | NON-SMOKER | RaT99 | |
165 | 1981 | t | Har81 | ||
176 | 1976 | t | HWF76 |
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 |
| b | Calculated from smooth cross sections with model fit: ln(sigma) = a + a1 ln(E) + a2 ln^2(E) |
| 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 | 193.5 ± 16.1 | - | 139.2 ± 12.1 | 116.3 ± 9.6 | 103.1 ± 8.0 | 94.3 ± 6.9 | 88.0 ± 6.1 | 79.2 ± 5.3 | 73.3 ± 5.0 | 69.1 ± 4.7 | 63.3 ± 4.4 | 59.8 ± 4.7 |
| 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 | 1.15 | - | 1.17 | 1.20 | 1.22 | 1.25 | 1.28 | 1.33 | 1.38 | 1.42 | 1.50 | 1.59 |
MACS:
Reference: endfb71,jendl40
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: 2013
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: Samarium