Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Barium (Z=56)
  130Ba   132Ba   133Ba   134Ba   135Ba   136Ba   137Ba   138Ba   139Ba   140Ba
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
137Ba 138Ba




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.090.2 ± 3..4--
0.076.2 ± 2.5--

(Version 0.0 corresponds to Bao et al.)
Comment
Rec. value is weighted average from KSG98 and VWG94.
Last review: In process
List of all available values
originalrenorm.yeartypeCommentRef
75.7 ± 2.4
1998cLinac, TOF, 6Li, Au:Sat.KSG98
76.9 ± 2.9
1994cVdG, TOF, Au:RaK88,Mac82eVWG94
57 ± 10
1978c,2Linac, TOF, 6Li, Au:Sat., k=0.9833MAM78a
53 ± 10
1976cLinac, TOF, 6Li+235U, Au:Sat.MAB76b
58.8
2011eENDF/B-VII.1endfb71
63.7
2011eJENDL-4.0jendl40
64.0
2004eJEFF-3.1jeff31
64.0
2002eJENDL-3.3jendl33
76
1971sAGM71
95.4
2005tMOST 2005Gor05
72.3
2002tMOST 2002Gor02
140
2000tNON-SMOKERRaT99
107
1981tHar81
73
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
2Including k from Ref. ABM82, where k is a correction factor which has been applied to the originally reported cross section
eEvaluated value taken directly from the reference
sSemiempirical estimates given in the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
370 ± 34
245 ± 18
203 ± 13
147 ± 7
119 ± 5
102 ± 4
90 ± 3
76 ± 3
67 ± 2
61 ± 2
54 ± 2
49 ± 2
Xfactor1.001.001.001.001.001.001.001.001.001.000.990.98
SEF1.001.001.001.001.001.001.001.001.001.000.990.99
Rate
2.20
1.84
1.70
1.51
1.41
1.35
1.31
1.28
1.26
1.25
1.27
1.28

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: Barium