Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Nitrogen (Z=7)
  14N   15N
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
15N 16N




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.00.0083 ± 0.0017--
0.00.0058 ± 0.0006--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. MACS is average from recent evaluations (endfb71,jendl40) which fit data from MSH96 reasonably well (with some underestimation towards higher energies). Ref. jendl40 considered p-wave from MSH96, calculation done with MLBW (Multi-Lebel Breit-Wigner) formalism up to 5.5 MeV. Uncertainties are difference between endfb71 and jendl40 plus experimental uncertainty from MSH96.
Last review: December 2014
List of all available values
originalrenorm.yeartypeCommentRef
0.00532 ± 0.00046
E(n,av.)= 25 keV
0.00763 ± 0.000651996,2014cVdG, Act., relative to 86Kr(n,gamma): Bee91, corrected for new Au xs MSH96
0.0113 ± 0.0015
E(n,av.)= 152 (11) keV
1996cVdG, Act., Au:Mac82eMSH96
0.0184 ± 0.0026
E(n,av.)= 370 (15) keV
1996cVdG, Act., Au:Mac82eMSH96
0.00914
2011eENDF/B-VII.1endfb71
0.00723
2011eJENDL-4.0jendl40
0.00914
2004eJEFF-3.1jeff31
0.00919
1996tDRC calculationMSH96


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
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
0.0034 ± 0.0004
-
0.0049 ± 0.0008
0.0060 ± 0.0011
0.0069 ± 0.0014
0.0076 ± 0.0016
0.0083 ± 0.0017
0.0093 ± 0.0019
0.0102 ± 0.0021
0.0109 ± 0.0023
0.0121 ± 0.0025
0.0131 ± 0.0028
SEF1.001.001.001.001.001.001.001.001.001.001.001.00
Rate
2.08
-
4.23
6.35
8.43
10.38
12.42
16.06
19.70
23.06
29.56
35.78

MACS:
Reference: MSH96,endfb71,jendl40
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: 2012

X-factor:
Please note: X-factors for this element have not been calculated but are expected to be close to 1.

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 102 cm3/mole/s, including SEF
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+
19F
100
5.8 mb
14O
1.18 m
β+
15O
2.04 m
β+
16O
99.762
0.038 mb
17O
0.038
18O
0.2
0.00886 mb
13N
9.96 m
β+
14N
99.634
0.041 mb
15N
0.366
0.0058 mb
16N
7.13 s
β-
17N
4.17 s
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-
16C
747.00 ms
β-
11B
80.2
12B
20.20 ms
β-
13B
17.30 ms
β-
14B
12.50 ms
β-
15B
9.93 ms
β-
right
down
Style: (S, M, L, XL or Alberto)


Isotope: Nitrogen