Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Cerium (Z=58)
  132Ce   133Ce   134Ce   135Ce   136Ce   137Ce   138Ce   139Ce   140Ce   141Ce   142Ce
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
138Ce 139Ce




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.0179 ± 5--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
179 ± 5
1996cVdG, Act., 1/v(kT), Au:RaK88KTS96
30
1971sAGM71
208.3
2006eendfb7
290
2000tRaT99
166
1996tKTS96
256
1981tHar81
137
1976tHWF76
158
2002tMOST 2002Gor02
60.5
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
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
462
303
245
214
193
179 ± 5
160
148
140
129
121
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
2.74
2.54
2.52
2.54
2.56
2.60
2.69
2.78
2.88
3.06
3.21

MACS:
Reference: RaT99,KTS96
Procedure: 'e+t' (The MACS from kT=5 keV to 100 keV are derived from calculated cross sections, which are then normalized to experimental data, e.g. to the values at kT=25 keV obtained in activation measurements. In these cases the uncertainties should be linearly increased below 25 and above 30 keV to reach about 30% at the extreme kT values.)
Year: 1996

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
up
left
138Nd
5.04 h
β+
139Nd
29.70 m
β+
140Nd
3.37 d
β+
141Nd
2.49 h
β+
142Nd
27.2%
35 mb
137Pr
1.28 h
β+
138Pr
1.45 m
β+
139Pr
4.41 h
β+
140Pr
3.39 m
β+
141Pr
100%
111.4 mb
136Ce
0.185%
328 mb
137Ce
9.00 h
973 mb, β+
138Ce
0.251%
179 mb
139Ce
137.62 d
214 mb, β+
140Ce
88.45%
11 mb
135La
19.50 h
β+
136La
9.87 m
β+
137La
59.99 ka
β+
138La
102.01x109 y
419 mb, β+
139La
99.91%
31.6 mb
134Ba
2.417%
176 mb
135Ba
6.592%
455 mb
136Ba
7.854%
61.2 mb
137Ba
11.232%
76.3 mb
138Ba
71.698%
4 mb
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Cerium