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
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
140La 141La




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*--

(Version 0.0 corresponds to Bao et al.)
Comment
New dataset. No experimental data available. Recommended value is semi-empirical value.
Last review: August 2014
List of all available values
originalrenorm.yeartypeCommentRef
117.8
2011eENDF/B-VII.1endfb71
98.58
2011eJENDL-4.0jendl40
211.9
2004eJEFF-3.1jeff31
2005tMOST 2005Gor05
2002tMOST 2002Gor02
2000tNON-SMOKERRaT99


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:
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
SEF1.001.001.001.001.001.001.001.001.001.001.001.00
Rate------------

MACS:
Reference:
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: 2014

X-factor:

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

Rate:
Reaction rate NA<σv> given in 100 cm3/mole/s, including SEF
Chart of nuclei
up
left
140Pr
3.39 m
β+
141Pr
100
111.4 mb
142Pr
19.12 h
415 mb, β-
143Pr
13.57 d
350 mb, β-
144Pr
17.28 m
β-
139Ce
137.62 d
214 mb, β+
140Ce
88.45
11 mb
141Ce
32.51 d
76 mb, β-
142Ce
11.114
28 mb
143Ce
1.38 d
β-
138La
102.01x109 y
419 mb, β+
139La
99.91
31.6 mb
140La
1.68 d
β-
141La
3.92 h
β-
142La
1.52 h
β-
137Ba
11.232
76.3 mb
138Ba
71.698
4 mb
139Ba
1.38 h
β-
140Ba
12.75 d
β-
141Ba
18.27 m
β-
136Cs
13.04 d
β-
137Cs
30.03 a
β-
138Cs
33.41 m
β-
139Cs
9.27 m
β-
140Cs
1.06 m
β-
right
down
Style: (S, M, L, XL or Alberto)


Isotope: Lanthanum