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
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
84Kr 85Kr




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.038 ± 4-17.8 ± 0.8

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
36.5 ± 4.5
37.71986rVdG, TOF, Au:B-VWLK86
57 ± 10
25keV
451972cSb-Be, Act., 1/v(E), 127I:832mb(25keV)TRK72
28
1971sAGM71
26.40
2006eendfb7
34.84
2004ejeff31
40.51
2002ejendl33
60
2000tRaT99
40
1986tWLK86
13
1981tHar81
29
1978tWFH78
68.5
2002tMOST 2002Gor02
58.9
2005tMOST 2005Gor05
Partial cross section to 85mKr:
18.3 ± 0.8
1991cVdG, Act., 1/v(kT), Au:RaK88Bee91
16.7 ± 1.2
17.31987cVdG, Act.,1/v(kT), Au:562mbKNA87


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
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
260
94
74
55
45
38 ± 4
30
26
23
19
17
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
1.55
0.79
0.76
0.65
0.60
0.55
0.50
0.49
0.47
0.45
0.45

MACS:
Reference: WLK86
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: 1986

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
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Krypton