Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Samarium (Z=62)
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
149Sm 150Sm




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.01820 ± 17--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
1819.9 ± 17.2
1993cVdG, TOF, Au:RaK88,Mac82eWGV93
1511 ± 70
14421986cVdG, TOF, Au:B-VWKW86
2706 ± 240
1981bLinac, TOF, 6Li+10B, Sat.Miz81
2729 ± 273
25291977bVdG,TOF,10B:Mag75, Au:628mb(kT=30keV)KYM77
2660 ± 266
1975bLinac, TOF, 10B, Au+Ag+etc:Sat.SKH75
1620 ± 280
1967cVdG, TOF, 181Ta:762mbMaG67a
1645
1981eKNM81
1620 ± 280
1971eAGM71
1783
2006eendfb7
1863
2004ejeff31
1829
2002ejendl33
1254
2000tRaT99
1270
1995tTDK95
1472
1986tWKW86
2083
1981tHar81
1630
1976tHWF76
2169
2002tMOST 2002Gor02
1274
2005tMOST 2005Gor05


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:
cDirectly quoted from the reference itself
bCalculated from smooth cross sections with model fit: ln(sigma) = a + a1 ln(E) + a2 ln^2(E)
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
7326
4017
2948
2409
2059
1820 ± 17
1515
1329
1203
1040
935
SEF0.990.970.940.930.920.920.910.910.910.900.88
Rate
4.32
3.26
2.86
2.66
2.52
2.43
2.32
2.27
2.24
2.21
2.19

MACS:
Reference: WGV93
Procedure: 'e' (The Maxwellian-averaged cross sections (MACS) from kT=5 keV to 100 keV are obtained from experimental data; the relative uncertainties are similar to those quoted for the 30 keV data.)
Year: 1993

SEF (Stellar enhancement factor):
Reference: Rau09
Year: 2009
Comment:

Rate:
Reaction rate NA<σv> given in 108 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei


Isotope: Samarium