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)
135Ba 136Ba




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.0455 ± 15--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
455.0 ± 15.0
1994cVdG, TOF, Au:RaK88,Mac82eVWG94
457 ± 80
1978c,2Linac, TOF, 6Li, Au:Sat., k=0.9833MAM78a
300 ± 60
1976cLinac, TOF, 6Li+235U, Au:Sat.MAB76b
315
1971sAGM71
485.1
2006eendfb7
500.8
2004ejeff31
500.8
2002ejendl33
518
2000tRaT99
687
1981tHar81
472
1976tHWF76
282
2002tMOST 2002Gor02
259
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
2Including k from Ref. ABM82, where k is a correction factor which has been applied to the originally reported cross section
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
1274
846
672
573
505
455 ± 15
387
342
310
266
237
SEF1.001.001.001.001.001.001.001.011.031.071.12
Rate
7.56
7.10
6.91
6.80
6.70
6.61
6.52
6.50
6.55
6.76
7.05

MACS:
Reference: VWG94
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: 1994

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


Isotope: Barium