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   156Eu
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
153Eu 154Eu




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.02567 ± 177--
0.22556 ± 46--
0.02780 ± 100--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is average from recent evaluations (endfb71,jendl40). Uncertainty is deviation between evaluations plus 2.9 % as in BKP92. There is a discrepancy between the activation measurement of BSA01 and the TOF measurements of BKP92 and MaY87a (f(TOF/Act)= 0.87-0.88). More investigations needed!
Last review: September 2013
List of all available values
originalrenorm.yeartypeCommentRef
2710 ± 77
2807 ± 802001,2013rVdG, Act., 1/v(kT), Au:RaK88; renorm. using en.dep. of jendl40 and endfb71BSA01
2710 ± 77
2001cVdG, Act., 1/v(kT), Au:RaK88; without SEF: BSA01BSA01
2733 ± 110
1995cVdG, Act., 1/v(kT), Au:RaK88Sto93
2447 ± 73
1992cVdG, TOF, Au+Ag+Nd+etc.:Sat.BKP92
2630 ± 200
1990cCritical piles, 10BBBM90
2480 ± 100
1987cLinac, TOF, 6Li, Au:Sat.MaY87a
3000 ± 300
1979bLinac, TOF, 6Li+10BMAN79
3459 ± 346
32061977bVdG, TOF, 10B:Mag75, Au:628 mb(kT= 30 keV)KYM77
3119 ± 312
1976bLinac, TOF, 10B:Mag75, Au+Ag+Sm:Sat.MEJ76
2671 ± 612
2011eENDF/B-VII.1 incl. covariance dataendfb71
2466
2011eJENDL-4.0jendl40
2471
2006eENDF/B-VII.0endfb7
2535
2004eJEFF-3.1jeff31
2535
2002eJENDL-3.3jendl33
2566
1981eKNM81
2700 ± 300
1971eAGM71
2587
2005tMOST 2005Gor05
1582
2002tMOST 2002Gor02
2905
2000tNON-SMOKERRaT99
2814
1981tHar81
2840
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:
rRecalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections
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
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
7605 ± 542
-
4900 ± 358
3841 ± 287
3248 ± 236
2855 ± 202
2567 ± 177
2162 ± 143
1884 ± 121
1679 ± 106
1392 ± 84
1200 ± 69
Xfactor1.001.001.000.990.970.930.880.780.670.580.440.34
SEF1.001.001.001.001.000.990.980.940.910.880.860.85
Rate
4.51
-
4.11
3.95
3.85
3.75
3.64
3.42
3.22
3.05
2.83
2.71

MACS:
Reference: endfb71,jendl40
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


Isotope: Europium