Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Barium (Z=56)
  130Ba   132Ba   134Ba   135Ba   136Ba   137Ba   138Ba
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
130Ba 131Ba




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.3746 ± 34--
0.2767 ± 30--
0.0760 ± 110--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: July 9th, 2009
List of all available values
originalrenorm.yeartypeCommentRef
746 ± 34
2009cVdG, Act., Au:RaK88DDH09
767 ± 30
2006cVdG, Act., Au:RaK88ID06
715 ± 58
7611979cF.N.B., Act., 1/v(E), Au:621mb(24keV)BPS79
2000
1971sAGM71
737.5
2006eendfb7
739.2
2004ejeff31
739.2
2002ejendl33
605
2000tRaT99
1012
1981tHar81
397
1976tHWF76
557
2002tMOST 2002Gor02
490
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
sSemiempirical estimates given in the reference
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
1698
1208
1000
881
802
746 ± 34
669
619
583
534
502
SEF1.001.001.001.001.001.001.001.001.011.031.08
Rate
1.01
1.01
1.03
1.05
1.06
1.08
1.12
1.17
1.21
1.31
1.44

MACS:
Reference: DDH09,energy dependencies from jeff31,jendl33,endfb7
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: 2009

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
130Ce
22.90 m
β+
131Ce
10.20 m
β+
132Ce
3.51 h
1570 mb, β+
133Ce
1.62 h
2600 mb, β+
134Ce
3.16 d
967 mb, β+
129La
11.60 m
β+
130La
8.70 m
β+
131La
59.00 m
β+
132La
4.80 h
β+
133La
3.91 h
β+
128Ba
2.43 d
β+
129Ba
2.23 h
β+
130Ba
0.106
746 mb
131Ba
11.50 d
β+
132Ba
0.101
397 mb
127Cs
6.25 h
β+
128Cs
3.66 m
β+
129Cs
1.34 d
β+
130Cs
29.21 m
β+
131Cs
9.69 d
β+
126Xe
0.089
359 mb
127Xe
36.40 d
β+
128Xe
1.91
248 mb
129Xe
26.4
472 mb
130Xe
4.071
141 mb
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Isotope: Barium
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