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)
85Kr 86Kr




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.055 ± 45*--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
108
2000tRaT99
67 ± 17
1986tWLK86
25
1981tHar81
150
1978tWFH78
52.3
2002tMOST 2002Gor02
51.3
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:
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
174
113
87
72
62
55 ± 45
45
39
35
29
25
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
1.03
0.95
0.90
0.86
0.82
0.80
0.76
0.73
0.72
0.69
0.66

MACS:
Reference:
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: 2000

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

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
85Sr
64.84 d
β+
86Sr
9.86%
64 mb
87Sr
7%
92 mb
88Sr
82.58%
6.2 mb
89Sr
50.57 d
19 mb, β-
84Rb
33.10 d
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-
83Kr
11.49%
243 mb
84Kr
57%
38 mb
85Kr
10.72 a
55 mb, β-
86Kr
17.3%
3.4 mb
87Kr
1.27 h
β-
82Br
1.47 d
β-
83Br
2.40 h
β-
84Br
31.80 m
β-
85Br
2.90 m
β-
86Br
55.01 s
β-
81Se
18.45 m
β-
82Se
8.73%
9 mb
83Se
22.30 m
β-
84Se
3.10 m
β-
85Se
31.70 s
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Krypton