Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Europium (Z=63)
  151Eu   152Eu   153Eu   154Eu   155Eu
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
151Eu 152Eu




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.23478 ± 77-1557 ± 124
0.03775 ± 150-1616 ± 170

(Version 0.0 corresponds to Bao et al.)
Comment
Recommended value is weighted average of BSA01, BKP92, and MaY87a. Previous MACS vs. kT table multiplied by 0.92.
Last review: January 30th, 2006
List of all available values
originalrenorm.yeartypeCommentRef
3736 ± 210
2001cVdG, Act., 1/v(kT), Au:RaK88; without SEF: BSA01BSA01
3821 ± 152
1993cVdG, Act., 1/v(kT), Au:RaK88Sto93
3458 ± 102
1992cVdG, TOF, Au+Ag+Nd+etc.:Sat.BKP92
3400 ± 140
1987cLinac, TOF, 6Li, Au:Sat.MaY87a
4745 ± 330
1979bLinac, TOF, 6Li+10B, Sat.MAN79
4822 ± 740
1976cquoted from BKY84MEJ76
4292 ± 172
1975cquoted from BKY84SKH75
3600 ± 500
1971eAGM71
3575
2006eendfb7
4334
2004ejeff31
3576
2002ejendl33
2790
2000tRaT99
3161
1981tHar81
2860
1976tHWF76
2438
2002tMOST 2002Gor02
2701
2005tMOST 2005Gor05
Partial cross section to 152mEu:
1438 ± 182
2001cVdG, Act., 1/v(kT), Au:RaK88; SEF: BSA01BSA01
1639 ± 184
16161984cVdG, Act., 1/v(kT), Au:657mb(25keV)BKY84


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)
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
 11644 
 7235 
 5475 
 4509 
 3900 
3478 ± 77
 2933 
 2593 
 2354 
 2035 
 1806 
SEF1.081.181.291.391.471.531.591.601.571.491.39
Rate
7.44
7.17
7.27
7.45
7.62
7.73
7.82
7.77
7.62
7.19
6.65

MACS:
Reference: Sto93,MaY87a
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
151Tb
17.61 h
β+
152Tb
17.50 h
β+
153Tb
2.34 d
β+
154Tb
21.50 h
β+
155Tb
5.32 d
β+
150Gd
1.79 Ma
α
151Gd
124.00 d
β+
152Gd
0.2
1049 mb
153Gd
240.41 d
4550 mb, β+
154Gd
2.18
1028 mb
149Eu
93.10 d
β+
150Eu
36.89 a
β+
151Eu
47.81
3775 mb
152Eu
13.51 a
7600 mb, β+
153Eu
52.19
2780 mb
148Sm
11.24
241 mb
149Sm
13.82
1820 mb
150Sm
7.38
422 mb
151Sm
90.00 a
2710 mb, β-
152Sm
26.75
473 mb
147Pm
2.62 a
1290 mb, β-
148Pm
5.37 d
2453 mb, β-
149Pm
2.21 d
2510 mb, β-
150Pm
2.68 h
β-
151Pm
1.18 d
β-
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Isotope: Europium
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