Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Dysprosium (Z=66)
  156Dy   158Dy   160Dy   161Dy   162Dy   163Dy   164Dy
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
156Dy 157Dy




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.31607 ± 92--
0.01567 ± 145--

(Version 0.0 corresponds to Bao et al.)
Comment
New recommended cross section is weighted average of DDH09 and Bee85.
Last review: July 9th, 2009
List of all available values
originalrenorm.yeartypeCommentRef
1633 ± 118
2009cVdG, Act., Au:RaK88DDH09
1589 ± 145
15671985cVdG, Act., 1/v(kT), Au:657mb(25keV)Bee85
870
1971sAGM71
1533
2006eendfb7
1190
2000tRaT99
850 ± 280
1988tZZC88
1637
1981tHar81
1840
1976tHWF76
2010
2002tMOST 2002Gor02
2126
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
4344
2824
2256
1949
1752
1612 ± 81
1425
1300
1209
1083
999
SEF1.001.001.001.001.011.031.091.141.201.281.34
Rate
2.58
2.37
2.32
2.32
2.36
2.42
2.60
2.79
2.97
3.28
3.56

MACS:
Reference: Bee85,DDH09, energy dependencies from jeff31,jendl33,endfb7
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: 2009

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

Rate:
Reaction rate NA<σv> given in 108 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
156Er
19.50 m
β+
157Er
18.65 m
β+
158Er
2.29 h
β+
159Er
36.00 m
β+
160Er
1.19 d
β+
155Ho
48.00 m
β+
156Ho
56.00 m
β+
157Ho
12.60 m
β+
158Ho
11.30 m
β+
159Ho
33.05 m
β+
154Dy
3.00 Ma
α
155Dy
9.90 h
β+
156Dy
0.06
1607 mb
157Dy
8.14 h
β+
158Dy
0.1
1060 mb
153Tb
2.34 d
β+
154Tb
21.50 h
β+
155Tb
5.32 d
β+
156Tb
5.35 d
β+
157Tb
71.01 a
β+
152Gd
0.2
1049 mb
153Gd
240.41 d
4550 mb, β+
154Gd
2.18
1028 mb
155Gd
14.8
2648 mb
156Gd
20.47
615 mb
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Isotope: Dysprosium
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