Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Sodium (Z=11)
  22Na   23Na
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
23Na 24Na




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.01.80 ± 0.05--
0.02.1 ± 0.2--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value and MACS vs. kT table is from UHK17. Note the smaller MACS for kT= 5 and 10 keV compared to previous evaluation (see UHK17).
Last review: April 2017
List of all available values
originalrenorm.yeartypeCommentRef
2.03 ± 0.06
kT=25 keV quasi-Maxw.
1.80 ± 0.052017cVdG, Act., 1/v(kT), Au:637 (13) mb for kT=25 keV; resonances from endfb71UHK17
9.10 ± 0.39
kT=5.1 keV quasi-Maxw.
2017cVdG, Act., 1/v(kT), Au:1922 (70) mb for kT=5.1 keV; resonances from endfb71UHK17
2.1 ± 0.2
1978rLinac, TOF, 6Li, Au:Sat. Recalcul. including data of MDH81MAM78b
1.6 ± 0.2
1976a,2VdG, TOF, 10B+6Li data at E=20-60 keV from MAM78b, k=1.0360RAT76
2.00
2015eTENDL-2015 using the TALYS codetendl15
2.05
2014eJEFF-3.2jeff32
1.83 ± 0.14
2011eENDF/B-VII.1 plus covariance dataendfb71
1.74
2011eJENDL-4.0jendl40
1.74
2004eJEFF-3.1jeff31
2.7 ± 0.4
1971eAGM71
3.01
2000tNON-SMOKERRaT99
27.3
2005tMOST 2005Gor05
28.6
2002tMOST 2002Gor02


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
aCalculated from resonance parameters with the formula from Ref. 45
2Including k from Ref. ABM82, 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
10.1 ± 0.4
-
4.12 ± 0.15
2.83 ± 0.09
2.30 ± 0.07
2.00 ± 0.05
1.80 ± 0.05
1.55 ± 0.04
1.40 ± 0.04
1.30 ± 0.03
1.16 ± 0.03
1.05 ± 0.03
Xfactor1.001.001.001.001.001.001.001.001.001.001.000.99
SEF1.001.001.001.001.001.001.001.001.001.001.000.99
Rate
6.10
-
3.52
2.96
2.78
2.70
2.66
2.65
2.67
2.72
2.79
2.81

MACS:
Reference: UHK17,endfb71
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: 2017

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 105 cm3/mole/s, including SEF
Chart of nuclei
up
left
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-
19F
100
5.8 mb
20F
11.07 s
β-
21F
4.16 s
β-
22F
4.23 s
β-
23F
2.23 s
β-
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Isotope: Sodium