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)
24Mg 25Mg




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.03.8 ± 0.2--
0.03.3 ± 0.4--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is from CM12.
Last review: February 2013
List of all available values
originalrenorm.yeartypeCommentRef
3.8 ± 0.2
2012cPb Spall., TOF CM12
3.3 ± 0.4
1976rLinac, TOF, 6Li, Au:Sat., k=0.9535 Recalcul. including data of MDH81WMH76
4.2 ± 0.3
1976c,1Linac, TOF, 6Li, Au:Sat., k=0.9535WMH76
4.0 ± 1.0
1971eAGM71
3.79 ± 0.72
2011eENDF/B-VII.1 plus covariancesendfb71
3.79
2011eJENDL-4.0jendl40
3.79
2004eJEFF-3.1jeff31
3.42
2000tNON-SMOKERRaT99
25.5
2002tMOST 2002Gor02
16.1
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
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
0.21 ± 0.01
0.43 ± 0.02
0.71 ± 0.04
1.71 ± 0.10
2.7 ± 0.1
3.4 ± 0.2
3.8 ± 0.2
3.9 ± 0.2
3.7 ± 0.2
3.4 ± 0.2
2.8 ± 0.2
2.3 ± 0.3
Xfactor1.001.001.001.001.001.001.001.001.001.001.001.00
SEF1.001.001.001.001.001.001.001.001.001.001.001.00
Rate
1.27
3.28
6.06
17.88
32.59
45.88
56.18
66.57
70.61
71.08
67.59
62.08

MACS:
Reference: CM12
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: 2012

X-factor:
Reference: Rau12
Year: 2012

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 104 cm3/mole/s, including SEF
Chart of nuclei
up
left
24Si
140.00 ms
β+
25Si
220.00 ms
β+
26Si
2.23 s
β+
27Si
4.16 s
β+
28Si
92.23
2.9 mb
23Al
470.00 ms
β+
24Al
2.05 s
β+
25Al
7.18 s
β+
26Al
717.12 ka
3.7 mb, β+
27Al
100
3.74 mb
22Mg
3.88 s
β+
23Mg
11.32 s
β+
24Mg
78.99
3.3 mb
25Mg
10
6.4 mb
26Mg
11.01
0.126 mb
21Na
22.49 s
β+
22Na
2.60 a
β+
23Na
100
2.1 mb
24Na
14.95 h
β-
25Na
59.01 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-
24Ne
3.38 m
β-
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Isotope: Magnesium