Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Carbon (Z=6)
  12C   13C   14C
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
13C 14C




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.00.021 ± 0.004--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
0.0198 ± 0.0037
25.7keV
0.0211997bPelletron, TOF, Au:B-VI; Recalcul. including contrib. of p-wave Men99 and of resonance at 153 keV RID90SOK97
0.020 ± 0.009
40keV
0.0151990rPelletron, TOF, Au:B-VI; Recalcul. including contrib. of reson.(153keV)RID90
0.23 ± 0.10
1981cCalcul. from data of MDH81BVW92
0.12 ± 0.04
1971aLinac, TOF, 127I:BNL-325,2nd(1966)AlM71


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:
bCalculated from smooth cross sections with model fit: ln(sigma) = a + a1 ln(E) + a2 ln^2(E)
rRecalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections
cDirectly quoted from the reference itself
aCalculated from resonance parameters with the formula from Ref. 45
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
0.0073
0.0081
0.0093
0.012
0.016
0.021 ± 0.004
0.032
0.041
0.046
0.050
0.050
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
4.48
7.03
9.88
14.73
21.95
31.57
55.54
79.56
97.78
122.73
137.22

MACS:
Reference: SOK97,Men99
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:
. Please note: SEF for this element have not been calculated but are expected to be close to 1.
Rate:
Reaction rate NA<σv> given in 102 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
13O
8.58 ms
β+
14O
1.18 m
β+
15O
2.04 m
β+
16O
99.762%
0.038 mb
17O
0.038%
12N
11.00 ms
β+
13N
9.96 m
β+
14N
99.634%
0.041 mb
15N
0.366%
0.0058 mb
16N
7.13 s
β-
11C
20.33 m
β+
12C
98.89%
0.0154 mb
13C
1.11%
0.021 mb
14C
5.70 ka
0.00848 mb, β-
15C
2.45 s
β-
10B
19.8%
11B
80.2%
12B
20.20 ms
β-
13B
17.30 ms
β-
14B
12.50 ms
β-
9Be
100%
0.0104 mb
10Be
1.51 Ma
β-
11Be
13.81 s
β-
12Be
21.50 ms
β-
13Be
0.00 ms
N
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Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Carbon