Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Oxygen (Z=8)
  16O   18O
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
18O 19O




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.00.00886 ± 0.00080--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
0.00793 ± 0.00070
25keV
0.008861996rVdG, Act., Au:RaK88MSG96
2.74
2002tMOST 2002Gor02
2.35
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:
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
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
0.0037
0.0051
0.0061
0.0070
0.00793
0.0089 ± 0.0008
0.0108
0.0130
0.0157
0.0223
0.0293
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
2.25
4.38
6.42
8.51
10.77
13.24
18.56
24.98
33.04
54.19
79.61

MACS:
Reference: MSG96
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: 1996

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
18Ne
1.67 s
β+
19Ne
17.22 s
β+
20Ne
90.48%
0.119 mb
21Ne
0.27%
1.5 mb
22Ne
9.25%
0.059 mb
17F
1.07 m
β+
18F
1.83 h
β+
19F
100%
5.8 mb
20F
11.07 s
β-
21F
4.16 s
β-
16O
99.762%
0.038 mb
17O
0.038%
18O
0.2%
0.00886 mb
19O
26.88 s
β-
20O
13.51 s
β-
15N
0.366%
0.0058 mb
16N
7.13 s
β-
17N
4.17 s
β-
18N
624.00 ms
β-
19N
271.00 ms
β-
14C
5.70 ka
0.00848 mb, β-
15C
2.45 s
β-
16C
747.00 ms
β-
17C
193.00 ms
β-
18C
92.00 ms
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Oxygen