Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Sodium (Z=11)
  22Na   23Na
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
22Na 23Na




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.07.96 ± 1.99*--

(Version 0.0 corresponds to Bao et al.)
Comment
New dataset. No experimental data available. Recommended value is calculated from evaluated libraries. Assumed 25% uncertainty. The TENDL-2015 predictions seems to overestimate the cross section by 2-3 orders of magnitude.
Last review: April 2016
List of all available values
originalrenorm.yeartypeCommentRef
2730
2015tTENDL-2015 using the TALYS codetendl15
7.96
2014tJEFF-3.2jeff32
7.96
2011tENDF/B-VII.1endfb71
7.96
2005tJEFF-3.1jeff31
4.86
2000tNON-SMOKERRaT99


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:
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
21.56
-
10.98
9.67
9.03
8.47
7.96 ± 1.99
7.06
6.33
5.73
4.84
4.20
SEF1.001.001.001.001.001.001.001.001.001.001.001.00
Rate
1.30
-
0.94
1.01
1.09
1.15
1.18
1.21
1.21
1.20
1.17
1.14

MACS:
Reference: jeff32,endfb71
Procedure: 't' (The MACS from kT=5 keV to 100 keV are obtained from theoretical calculations with corresponding uncertainties between 25 and 50% in most cases.)
Year: 2014

X-factor:

SEF (Stellar enhancement factor):
Reference:
Year:
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 106 cm3/mole/s, including SEF
Chart of nuclei
up
left
22Al
59.00 ms
β+
23Al
470.00 ms
β+
24Al
2.05 s
β+
25Al
7.18 s
β+
26Al
717.12 ka
3.7 mb, β+
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-
right
down
Style: (S, M, L, XL or Alberto)


Isotope: Sodium