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)
152Sm 153Sm




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.0497 ± 6--
0.0473 ± 4--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is calculated from combined energy dependence of jendl40 and WGV93. Values from DIM99 are in perfect agreement, same holds for recalculated value of BSA01.
Last review: In process
List of all available values
originalrenorm.yeartypeCommentRef
431 ± 16
470 ± 172001,2013rVdG, Act., 1/v(kT), Au:RaK88; renorm. using en.dep. of jendl40 and WGV93BSA01
439 ± 18
E(n)= 25-45 keV
1999cPelletron, TOF, Au:ENDF/B-VI and MaG67bDIM99
431 ± 16
2001cVdG, Act., 1/v(kT), Au:RaK88BSA01
431 ± 18
1995cVdG, Act., 1/v(kT), Au:RaK88Sto93
473.2 ± 4.4
497 ± 61993dVdG, TOF, Au:RaK88,Mac82eWGV93
423 ± 23
E(n)= 30 (2) keV
1992cVdG, TOF, Au+Ag+Nd+etc.:Sat.BKP92
401 ± 24
3951984cVdG, Act., 1/v(kT), Au:657 mb (25 keV)BKY84
606 ± 61
5621978bVdG, TOF, 10B:Mag75, Au:628mb (kT= 30 keV)KYP78
410 ± 70
1967cVdG, TOF, 181Ta:762 mbMaG67a
458.8
2011eENDF/B-VII.1endfb71
467.2
2011eJENDL-4.0jendl40
495.4
2004eJEFF-3.1jeff31
479.3
2002eJENDL-3.3jendl33
400
1997eMug97
420
1979eIWY79
450 ± 50
1971eAGM71
506
2005tMOST 2005Gor05
499
2002tMOST 2002Gor02
338
2000tNON-SMOKERRaT99
687
1981tHar81
346
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:
rRecalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections
cDirectly quoted from the reference itself
dRenormalized 2017 based on updated Au measurement
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
1266 ± 76
964 ± 35
854 ± 24
693 ± 13
603 ± 9
542 ± 8
497 ± 7
432 ± 5
386 ± 5
351 ± 5
301 ± 6
268 ± 7
Xfactor1.001.001.001.000.980.950.890.750.620.510.360.27
SEF1.001.001.001.001.011.021.031.071.121.171.261.35
Rate
7.51
7.23
7.17
7.13
7.20
7.32
7.48
7.79
8.11
8.40
9.00
9.62

MACS:
Reference: Rei18
Procedure: 'd' (Renormalized 2017 based on updated Au measurement)
Year: 2018

X-factor:
Reference: Rau12
Year: 2012

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

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Chart of nuclei


Isotope: Samarium