Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Tungsten (Z=74)
  180W   182W   183W   184W   185W   186W
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
183W 184W




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.0515 ± 15--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
515 ± 15
1983bLinac, TOF, 6Li, Au:Sat.MDA83
550
1969cLinac, TOF, 6Li, Au:Sat., quoted from BKW82BHM69
550 ± 50
1971eAGM71
528.6
2006eendfb7
453.1
2004ejeff31
453.1
2002ejendl33
701
2000tRaT99
618 ± 75
1991tKJB91
1038
1981tHar81
1010
1976tHWF76
1098
2002tMOST 2002Gor02
681
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:
bCalculated from smooth cross sections with model fit: ln(sigma) = a + a1 ln(E) + a2 ln^2(E)
cDirectly quoted from the reference itself
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
1594
1030
797
665
578
515 ± 15
430
374
333
277
242
SEF1.001.011.021.041.061.081.131.171.201.261.31
Rate
9.45
8.69
8.35
8.19
8.12
8.10
8.12
8.18
8.22
8.30
8.42

MACS:
Reference: MDA83
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: 1983

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: Tungsten
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