Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Krypton (Z=36)
  78Kr   79Kr   80Kr   81Kr   82Kr   83Kr   84Kr   85Kr   86Kr
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
86Kr 87Kr




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.03.4 ± 0.3--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
3.34 ± 0.24
1991cVdG, Act., 1/v(kT), Au:RaK88Bee91
3.5 ± 0.3
3.61987cVdG, Act., 1/v(kT), Au:562mbKNA87
5.6 ± 0.7
5.31986cVdG, TOF, Au:B-VWLK86
3.8 ± 0.7
3.71986cVdG, Act., 1/v(kT), Au:657mb(25keV)WBK86a
4.8 ± 1.2
1983cLinac, TOF, 6Li, Au:Sat.RFH83
9
1971sAGM71
5.07
2006eendfb7
6.14
2004ejeff31
5.12
2002ejendl33
7.1
2000tRaT99
8.0 ± 2.8
1986tWBK86a
3.7
1981tHar81
4.2
1978tWFH78
3.78
2002tMOST 2002Gor02
3.71
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
sSemiempirical estimates given in the reference
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
2.1
3.2
3.6
3.7
3.5
3.4 ± 0.3
2.9
2.5
2.2
1.8
1.5
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
1.25
2.69
3.71
4.40
4.65
4.95
4.88
4.70
4.53
4.28
3.99

MACS:
Reference: Wal84,Bee91
Procedure: 'e' (The Maxwellian-averaged cross sections (MACS) from kT=5 keV to 100 keV are obtained from experimental data; the relative uncertainties are similar to those quoted for the 30 keV data.)
Year: 1991

SEF (Stellar enhancement factor):
Reference: Rau09
Year: 2009
Comment:

Rate:
Reaction rate NA<σv> given in 105 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
86Sr
9.86%
64 mb
87Sr
7%
92 mb
88Sr
82.58%
6.2 mb
89Sr
50.57 d
19 mb, β-
90Sr
28.90 a
β-
85Rb
72.17%
234 mb
86Rb
18.64 d
202 mb, β-
87Rb
49.69x109 y
15.7 mb, β-
88Rb
17.77 m
β-
89Rb
15.15 m
β-
84Kr
57%
38 mb
85Kr
10.72 a
55 mb, β-
86Kr
17.3%
3.4 mb
87Kr
1.27 h
β-
88Kr
2.84 h
β-
83Br
2.40 h
β-
84Br
31.80 m
β-
85Br
2.90 m
β-
86Br
55.01 s
β-
87Br
55.65 s
β-
82Se
8.73%
9 mb
83Se
22.30 m
β-
84Se
3.10 m
β-
85Se
31.70 s
β-
86Se
15.30 s
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Krypton