Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Samarium (Z=62)
  144Sm   146Sm   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]
1.0965.2 ± 10.5--
0.0973 ± 10--

(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 uncertainty as in WGV93.
Last review: August 2013
List of all available values
originalrenorm.yeartypeCommentRef
884 ± 36
E(n)= 30 (5) keV
1999cPelletron, TOF, Au:ENDF/B-VI and MaG67bDIM99
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
967.7
2011eENDF/B-VII.1endfb71
965.9
2011eJENDL-4.0jendl40
1164
2004eJEFF-3.1jeff31
1032
2002eJENDL-3.3jendl33
1005
1981eKNM81
1150 ± 190
1971eAGM71
584
2005tMOST 2005Gor05
488
2002tMOST 2002Gor02
1276
2000tNON-SMOKERRaT99
860
1995tTDK95
968
1986tWKW86
1469
1981tHar81
1070
1976tHWF76


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
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
3302 ± 187
-
1988 ± 94
1504 ± 53
1245 ± 29
1080 ± 17
965.2 ± 10.5
812.4 ± 13.5
713.7 ± 14.7
644.0 ± 15.3
551.3 ± 16.7
492.2 ± 18.4
Xfactor1.001.001.001.001.001.000.990.980.960.930.890.85
SEF1.001.001.001.001.001.000.990.980.970.960.930.91
Rate
1.96
-
1.67
1.55
1.48
1.43
1.40
1.34
1.30
1.27
1.22
1.18

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: Rau12
Year: 2012

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

Rate:
Reaction rate NA<σv> given in 108 cm3/mole/s, including SEF
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: (S, M, L, XL or Alberto)


Isotope: Samarium