Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Gadolinium (Z=64)
  152Gd   153Gd   154Gd   155Gd   156Gd   157Gd   158Gd   160Gd
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
157Gd 158Gd




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.01369 ± 15--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
1369 ± 15
1995cVdG, TOF, Au:RaK88,Mac82eWVK95
1365.5 ± 70.0
1989bLinac, TOF, 6Li+10B, Sat.NTM89
1355 ± 39
1988cLinac, TOF, 6Li, Au:Sat.BeM88
1538 ± 154
14251974bVdG, TOF, 10B:SPU71, Au:628mb(kT=30keV)SKP74a
2070
1971sAGM71
1398
2006eendfb7
1643
2004ejeff31
1270
2002ejendl33
1271
2000tRaT99
1381
1981tHar81
1360
1976tHWF76
1733
2002tMOST 2002Gor02
1307
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
bCalculated from smooth cross sections with model fit: ln(sigma) = a + a1 ln(E) + a2 ln^2(E)
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
4251
2803
2163
1791
1547
1369 ± 15
1123
959
841
683
580
SEF1.001.000.990.980.980.970.970.970.980.991.00
Rate
2.52
2.35
2.20
2.09
2.01
1.94
1.83
1.75
1.69
1.61
1.54

MACS:
Reference: WVK95
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: 1995

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
157Dy
8.14 h
β+
158Dy
0.1%
1060 mb
159Dy
144.44 d
β+
160Dy
2.34%
890 mb
161Dy
18.91%
1964 mb
156Tb
5.35 d
β+
157Tb
71.01 a
β+
158Tb
179.99 a
β+
159Tb
100%
1580 mb
160Tb
72.30 d
3240 mb, β-
155Gd
14.8%
2648 mb
156Gd
20.47%
615 mb
157Gd
15.65%
1369 mb
158Gd
24.84%
324 mb
159Gd
18.48 h
β-
154Eu
8.59 a
4420 mb, β-
155Eu
4.75 a
1320 mb, β-
156Eu
15.19 d
β-
157Eu
15.18 h
β-
158Eu
45.90 m
β-
153Sm
1.93 d
1095 mb, β-
154Sm
22.75%
206 mb
155Sm
22.30 m
β-
156Sm
9.40 h
β-
157Sm
8.03 m
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Gadolinium