Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Fluorine (Z=9)
  19F
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
19F 20F




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.33.2 ± 0.1--
0.05.8 ± 1.2--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: Nov. 4th, 2008
List of all available values
originalrenorm.yeartypeCommentRef
3.2 ± 0.1
2007cVdG, Act., Au:RaK88UHK07
5.8 ± 1.2
1980rLinac, TOF, 6Li, Au:Sat., Recalcul. including data of MDH81ACC80,NLB71
6.2 ± 1.2
1973cLinac, TOF, 6Li, Au:Sat.MaW73
5.6 ± 0.4
eAGM71
4.37
2006eendfb7
4.37
2004ejeff31
5.73
2002ejendl33
27.5
2002tMOST 2002Gor02
26.6
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
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
1.2
4.1
4.5
4.2
3.7 ± 0.1
3.2
2.5
2.0
1.7
1.2
1.0
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
7.28
35.18
47.29
50.96
50.19
47.55
42.90
38.37
35.73
29.12
27.13

MACS:
Reference: UHK07, and energy dependence from jendl33,endfb7,jeff31.
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: 2007

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
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
19Na
0.00 ms
P
20Na
448.00 ms
β+
21Na
22.49 s
β+
22Na
2.60 a
β+
23Na
100
2.1 mb
18Ne
1.67 s
β+
19Ne
17.22 s
β+
20Ne
90.48
0.119 mb
21Ne
0.27
1.5 mb
22Ne
9.25
0.059 mb
17F
1.07 m
β+
18F
1.83 h
β+
19F
100
5.8 mb
20F
11.07 s
β-
21F
4.16 s
β-
16O
99.762
0.038 mb
17O
0.038
18O
0.2
0.00886 mb
19O
26.88 s
β-
20O
13.51 s
β-
15N
0.366
0.0058 mb
16N
7.13 s
β-
17N
4.17 s
β-
18N
624.00 ms
β-
19N
271.00 ms
β-
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Isotope: Fluorine
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