Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Nitrogen (Z=7)
  14N   15N
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
14N 15N




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.00.041 ± 0.060--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
0.041 ± 0.060
1981rCalcul. from data of MDH81BVW92
0.0672
2006eendfb7
0.0672
2004ejeff31
0.0678
2002ejendl33


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:
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
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
0.183
0.101
0.071
0.057
0.046
0.041 ± 0.060
0.033
0.027
0.022
0.019
0.016
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
1.12
0.87
0.75
0.70
0.63
0.61
0.57
0.52
0.47
0.47
0.44

MACS:
Reference: RaT99,MDH81
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: 1981

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
15F
0.00 ms
P
16F
0.00 ms
P
17F
1.07 m
β+
18F
1.83 h
β+
13O
8.58 ms
β+
14O
1.18 m
β+
15O
2.04 m
β+
16O
99.762%
0.038 mb
17O
0.038%
12N
11.00 ms
β+
13N
9.96 m
β+
14N
99.634%
0.041 mb
15N
0.366%
0.0058 mb
16N
7.13 s
β-
11C
20.33 m
β+
12C
98.89%
0.0154 mb
13C
1.11%
0.021 mb
14C
5.70 ka
0.00848 mb, β-
15C
2.45 s
β-
10B
19.8%
11B
80.2%
12B
20.20 ms
β-
13B
17.30 ms
β-
14B
12.50 ms
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Nitrogen