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)
138Ba 139Ba




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.04.00 ± 0.20--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 2000
List of all available values
originalrenorm.yeartypeCommentRef
4.07 ± 0.20
1997cLinac, TOF, 6Li, Au+Ag:Sat.BCM97
4.22 ± 0.25
3.931980cVdG, Act., 1/v(kT), Au:B-IVBeK80
3.8 ± 0.8
1979c,2Linac, TOF, 6Li, Au:Sat., k=0.9833MAM79
5 ± 2
1977cLinac, TOF, 6Li+235U, Au:Sat.MAB75,MAB77a
12.6 ± 1.6
23keV
9.51973cSb-Be, Act., 1/v(E), 127I:836mb(23keV)SSR73
8 ± 2
1971eAGM71
3.75
2006eendfb7
4.30
2004ejeff31
4.30
2002ejendl33
6.3
2000tRaT99
4.8
1981tHar81
6.7
1976tHWF76
2.38
2002tMOST 2002Gor02
2.79
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
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
13.4
7.85
5.93
4.95
4.38
4.00 ± 0.20
3.49
3.14
2.89
2.52
2.23
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
7.95
6.59
6.10
5.88
5.81
5.81
5.86
5.89
5.94
5.98
5.92

MACS:
Reference: BCM97,BeK80
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: 1997

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

Rate:
Reaction rate NA<σv> given in 105 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
138Ce
0.251%
179 mb
139Ce
137.62 d
214 mb, β+
140Ce
88.45%
11 mb
141Ce
32.51 d
76 mb, β-
142Ce
11.114%
28 mb
137La
59.99 ka
β+
138La
102.01x109 y
419 mb, β+
139La
99.91%
31.6 mb
140La
1.68 d
β-
141La
3.92 h
β-
136Ba
7.854%
61.2 mb
137Ba
11.232%
76.3 mb
138Ba
71.698%
4 mb
139Ba
1.38 h
β-
140Ba
12.75 d
β-
135Cs
2.30 Ma
198 mb, β-
136Cs
13.04 d
β-
137Cs
30.03 a
β-
138Cs
33.41 m
β-
139Cs
9.27 m
β-
134Xe
10.436%
20.2 mb
135Xe
9.14 h
β-
136Xe
8.857%
0.91 mb
137Xe
3.82 m
β-
138Xe
14.08 m
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Barium