Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Magnesium (Z=12)
  24Mg   25Mg   26Mg
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
26Mg 27Mg




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.00.126 ± 0.009--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
0.1137 ± 0.0080
52keV
0.1161999cVdG, Act., Au:431mb(52keV) Mac82eMBO98b
0.124 ± 0.008
25keV
0.1311998cVdG, Act., Au:RaK88,MHW75MBO98a
0.084 ± 0.005
1976rLinac, TOF, 6Li, Au:Sat., k=0.9535 Recalcul. including data of MDH81WMH76
0.086 ± 0.005
1976c,1Linac, TOF, 6Li, Au:Sat., k=0.9535WMH76
12
1971eAGM71
0.0866
2006eendfb7
0.0866
2004ejeff31
0.0866
2002ejendl33
8.32
2002tMOST 2002Gor02
7.93
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
rRecalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections
1Including k from Ref. MaW81, where k is a correction factor which has been applied to the originally reported cross section
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
0.103
0.091
0.098
0.110
0.119
0.126 ± 0.009
0.143
0.161
0.165
0.226
0.265
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
6.21
7.75
10.23
13.26
16.03
18.60
24.37
30.68
34.44
54.47
71.41

MACS:
Reference: MBO98a
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: 1998

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 103 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
26Si
2.23 s
β+
27Si
4.16 s
β+
28Si
92.23%
2.9 mb
29Si
4.683%
7.9 mb
30Si
3.087%
6.5 mb
25Al
7.18 s
β+
26Al
717.12 ka
3.7 mb, β+
27Al
100%
3.74 mb
28Al
2.24 m
β-
29Al
6.56 m
β-
24Mg
78.99%
3.3 mb
25Mg
10%
6.4 mb
26Mg
11.01%
0.126 mb
27Mg
9.46 m
β-
28Mg
20.91 h
β-
23Na
100%
2.1 mb
24Na
14.95 h
β-
25Na
59.01 s
β-
26Na
1.08 s
β-
27Na
301.00 ms
β-
22Ne
9.25%
0.059 mb
23Ne
37.24 s
β-
24Ne
3.38 m
β-
25Ne
602.00 ms
β-
26Ne
192.00 ms
β-
right
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Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Magnesium