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)
132Ba 133Ba




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.3397 ± 16-35.7 ± 3.6
0.2399 ± 16-
0.0379 ± 137*-

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: July 9th, 2009
List of all available values
originalrenorm.yeartypeCommentRef
397 ± 16
2009cVdG, Act., Au:RaK88DDH09
399 ± 16
2006cVdG, Act., Au:RaK88ID06
650
1971sAGM71
456.8
2006eendfb7
456.5
2004ejeff31
456.5
2002ejendl33
374
2000tRaT99
280 ± 92
1988tZZC88
442
1981tHar81
250
1976tHWF76
297
2002tMOST 2002Gor02
227
2005tMOST 2005Gor05
Partial cross section to 121mSn:
35.7 ± 3.6
2009cVdG, Act., Au:RaK88DDH09


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
922
639
529
467
426
397 ± 16
357
331
313
290
277
SEF1.001.001.001.001.001.001.001.001.001.001.02
Rate
5.47
5.36
5.44
5.54
5.65
5.77
5.99
6.21
6.44
6.92
7.47

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 107 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
132Ce
3.51 h
1570 mb, β+
133Ce
1.62 h
2600 mb, β+
134Ce
3.16 d
967 mb, β+
135Ce
17.70 h
1320 mb, β+
136Ce
0.185
328 mb
131La
59.00 m
β+
132La
4.80 h
β+
133La
3.91 h
β+
134La
6.45 m
β+
135La
19.50 h
β+
130Ba
0.106
746 mb
131Ba
11.50 d
β+
132Ba
0.101
397 mb
133Ba
10.52 a
β+
134Ba
2.417
176 mb
129Cs
1.34 d
β+
130Cs
29.21 m
β+
131Cs
9.69 d
β+
132Cs
6.48 d
β+
133Cs
100
509 mb
128Xe
1.91
248 mb
129Xe
26.4
472 mb
130Xe
4.071
141 mb
131Xe
21.232
340 mb
132Xe
26.909
64.6 mb
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Isotope: Barium
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