Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Samarium (Z=62)
  144Sm   147Sm   148Sm   149Sm   150Sm   151Sm   152Sm   153Sm   154Sm
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
147Sm 148Sm




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.0973 ± 10--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
973.1 ± 10.0
1993cVdG, TOF, Au:RaK88,Mac82eWGV93
953 ± 47
1992cVdG, TOF, Au+Ag+Nd+etc.: Sat.BKP92
1241 ± 150
1981bLinac, TOF, 6Li+10B, Sat.Miz81
1080 ± 86
1979cLinac, TOF, 6Li+10B, Sat.IWY79
2156 ± 216
19981977bVdG, TOF, 10B:Mag75, Au:628mb(kT=30keV)KYM77
1170 ± 190
1967cVdG, TOF, 181Ta:762mbMaG67a
1005
1981eKNM81
1150 ± 190
1971eAGM71
967.7
2006eendfb7
1164
2004ejeff31
1032
2002ejendl33
1276
2000tRaT99
860
1995tTDK95
968
1986tWKW86
1469
1981tHar81
1070
1976tHWF76
488
2002tMOST 2002Gor02
584
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
3250
1963
1496
1246
1085
973 ± 10
824
729
662
573
514
SEF1.001.001.001.001.000.990.980.970.960.930.91
Rate
1.93
1.65
1.54
1.48
1.44
1.41
1.36
1.33
1.30
1.27
1.24

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
up
left
147Gd
1.59 d
β+
148Gd
70.89 a
α
149Gd
9.28 d
β+
150Gd
1.79 Ma
α
151Gd
124.00 d
β+
146Eu
4.61 d
β+
147Eu
24.10 d
β+
148Eu
54.50 d
β+
149Eu
93.10 d
β+
150Eu
36.89 a
β+
145Sm
340.05 d
β+
146Sm
102.99 Ma
α
147Sm
106.00x109 y
973 mb, α
148Sm
11.24%
241 mb
149Sm
13.82%
1820 mb
144Pm
362.96 d
β+
145Pm
17.70 a
β+
146Pm
5.53 a
β+
147Pm
2.62 a
1290 mb, β-
148Pm
5.37 d
2453 mb, β-
143Nd
12.2%
245 mb
144Nd
23.8%
81.3 mb
145Nd
8.3%
425 mb
146Nd
17.2%
91.2 mb
147Nd
10.98 d
544 mb, β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Samarium