Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Disclaimer]   [Contact]
p-process
Available isotopes for Carbon (Z=6)
  12C   13C   14C
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
14C 15C




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.30.00848 ± 0.00057--
0.00.0015 ± 0.0004--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: July 28th, 2009
List of all available values
originalrenorm.yeartypeCommentRef
0.0071 ± 0.0005
kT=23.3 keV
0.00848 ± 0.000572008rVdG, Act., Au:RaK88RHF08
0.0107 ± 0.0012
E(n,av.)= 150 keV
2008rVdG, Act., Au:Mac82e, norm. to RaK88RHF08
0.0170 ± 0.0015
E(n,av.)= 500 keV
2008rVdG, Act., Au:Mac82e, norm. to RaK88RHF08
0.0158 ± 0.0016
E(n,av.)= 750 keV
2008rVdG, Act., Au:Mac82e, norm. to RaK88RHF08
0.00172 ± 0.00043
23.3keV
0.001521992rVdG, Act., Au:RaK88BWK92a
0.100
25keV
0.0921990tKMF90


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:
rRecalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
0.00362
0.00456
0.00508
0.00617
0.00705
0.00781
0.00848 ± 0.00057
0.00961
0.01054
0.01135
0.01266
0.01369
SEF1.001.01.001.001.001.001.001.001.001.001.001.00
Rate
2.22
3.53
4.40
6.54
8.63
10.69
12.71
16.64
20.40
24.07
31.00
37.47

MACS:
Reference: RHF08
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: 2008

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
14O
1.18 m
β+
15O
2.04 m
β+
16O
99.762
0.038 mb
17O
0.038
18O
0.2
0.00886 mb
13N
9.96 m
β+
14N
99.634
0.041 mb
15N
0.366
0.0058 mb
16N
7.13 s
β-
17N
4.17 s
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-
16C
747.00 ms
β-
11B
80.2
12B
20.20 ms
β-
13B
17.30 ms
β-
14B
12.50 ms
β-
15B
9.93 ms
β-
10Be
1.51 Ma
β-
11Be
13.81 s
β-
12Be
21.50 ms
β-
13Be
0.00 ms
N
14Be
4.84 ms
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Carbon
This page is not optimized for Microsoft Internet Explorer.