Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Dysprosium (Z=66)
  154Dy   156Dy   158Dy   159Dy   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]
1.01626 ± 126--
0.31607 ± 92--
0.01567 ± 145--

(Version 0.0 corresponds to Bao et al.)
Comment
New recommended cross section is recalculated from DDH09 using recent evaluated libraries (endfb71 and jendl40). Uncertainty is 7.2 % as in DDH09 plus deviation of both libraries.
Last review: October 2013
List of all available values
originalrenorm.yeartypeCommentRef
1626 ± 126
2009,2013cVdG, Act., Au:RaK88; recalc. using endfb71 and jendl40DDH09
1633 ± 118
2009cVdG, Act., Au:RaK88DDH09
1589 ± 145
15671985cVdG, Act., 1/v(kT), Au:657 mb (25 keV)Bee85
1533
2011eENDF/B-VII.1endfb71
1481
2011eJENDL-4.0jendl40
870
1971sAGM71
2126
2005tMOST 2005Gor05
2010
2002tMOST 2002Gor02
1190
2000tNON-SMOKERRaT99
850 ± 280
1988tZZC88
1637
1981tHar81
1840
1976tHWF76


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
eEvaluated value taken directly from the reference
sSemiempirical estimates given in the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
4665 ± 411
-
2962 ± 258
2331 ± 189
1991 ± 149
1777 ± 130
1626 ± 126
1424 ± 118
1293 ± 110
1198 ± 102
1068 ± 88
983 ± 80
Xfactor1.001.001.001.000.990.970.920.790.660.550.400.31
SEF1.001.001.001.001.001.011.031.091.141.201.281.34
Rate
2.77
-
2.48
2.40
2.37
2.39
2.44
2.59
2.77
2.94
3.24
3.50

MACS:
Reference: DDH09,jendl40,endfb71
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: 2013

X-factor:
Reference: Rau12
Year: 2012

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

Rate:
Reaction rate NA<σv> given in 108 cm3/mole/s, including SEF
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