Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Lanthanum (Z=57)
  137La   138La   139La   140La
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
138La 139La




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.0X ± Y*--
0.3419 ± 59*--

(Version 0.0 corresponds to Bao et al.)
Comment
No exp. data available. Rec. value is semi-empirical estimate.
Last review: August 2014
List of all available values
originalrenorm.yeartypeCommentRef
419 ± 59
2006spriv. comm. T. Rauscher (2006)ID06
314.1
2011eENDF/B-VII.1endfb71
312.8
2011eJENDL-4.0jendl40
314.1
2004eJEFF-3.1jeff31
314.1
2002eJENDL-3.3jendl33
337
2005tMOST 2005Gor05
194
2002tMOST 2002Gor02
781
2000tNON-SMOKERRaT99
358
1981tHar81


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:
sSemiempirical estimates given in the reference
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
1294
-
735
593
514
460
419 ± 59
361
322
292
251
223
Xfactor1.001.001.001.000.990.970.950.910.870.830.770.72
SEF1.001.001.001.001.000.990.980.960.930.900.840.79
Rate
7.68
-
6.17
6.09
6.08
6.06
5.99
5.83
5.64
5.41
5.01
4.65

MACS:
Reference: RaT99, ID06
Procedure: 't' (The MACS from kT=5 keV to 100 keV are obtained from theoretical calculations with corresponding uncertainties between 25 and 50% in most cases.)
Year: 2000,2006

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
Style: (S, M, L, XL or Alberto)


Isotope: Lanthanum