Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Neon (Z=10)
  20Ne   21Ne   22Ne
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
21Ne 22Ne




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.01.5 ± 0.9--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
1.6 ± 0.9
1.51983cVdG, TOF, Au:B-VAlK83
71.0
2002tMOST 2002Gor02
66.0
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
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy20keV25keV30keV40keV50keV
MACS
1.7
1.6
1.5 ± 0.9
1.3
1.2
SEF1.001.001.001.001.00
Rate
2.06
2.17
2.22
2.23
2.29

MACS:
Reference: AlK83
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: 1983

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 105 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
21Mg
122.00 ms
β+
22Mg
3.88 s
β+
23Mg
11.32 s
β+
24Mg
78.99%
3.3 mb
25Mg
10%
6.4 mb
20Na
448.00 ms
β+
21Na
22.49 s
β+
22Na
2.60 a
β+
23Na
100%
2.1 mb
24Na
14.95 h
β-
19Ne
17.22 s
β+
20Ne
90.48%
0.119 mb
21Ne
0.27%
1.5 mb
22Ne
9.25%
0.059 mb
23Ne
37.24 s
β-
18F
1.83 h
β+
19F
100%
5.8 mb
20F
11.07 s
β-
21F
4.16 s
β-
22F
4.23 s
β-
17O
0.038%
18O
0.2%
0.00886 mb
19O
26.88 s
β-
20O
13.51 s
β-
21O
3.42 s
β-
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Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Neon