Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Disclaimer]   [Contact]
p-process
Available isotopes for Erbium (Z=68)
  162Er   164Er   166Er   167Er   168Er   169Er   170Er
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
164Er 165Er




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.01084 ± 51--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: January 30th, 2006
List of all available values
originalrenorm.yeartypeCommentRef
1084 ± 51
1996cVdG, Act., 1/v(kT), Au:RaK88Bes96, BSA01
714 ± 61
7091985cVdG, Act., 1/v(kT), Au:Mac82eBWM85
750
1971sAGM71
1928
2006eendfb7
1928
2004ejeff31
1928
2002ejendl33
814
2000tRaT99
1122
1981tHar81
1000
1976tHWF76
1506
2002tMOST 2002Gor02
949
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
3067
1940
1537
1319
1182
1084 ± 51
951
861
797
694
633
SEF1.001.001.001.021.051.081.161.221.261.331.39
Rate
1.82
1.63
1.58
1.59
1.64
1.71
1.85
1.97
2.06
2.19
2.33

MACS:
Reference: RaT99,BWM85
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: 1985

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
164Yb
1.26 h
β+
165Yb
9.90 m
β+
166Yb
2.36 d
β+
167Yb
17.50 m
β+
168Yb
0.13
1214 mb
163Tm
1.81 h
β+
164Tm
2.00 m
β+
165Tm
1.25 d
β+
166Tm
7.70 h
β+
167Tm
9.25 d
β+
162Er
0.139
1624 mb
163Er
1.25 h
β+
164Er
1.601
1084 mb
165Er
10.36 h
β+
166Er
33.503
563 mb
161Ho
2.48 h
β+
162Ho
15.00 m
β+
163Ho
4.57 ka
2125 mb, β+
164Ho
29.00 m
β+
165Ho
100
1280 mb
160Dy
2.34
890 mb
161Dy
18.91
1964 mb
162Dy
25.51
446 mb
163Dy
24.9
1112 mb
164Dy
28.18
212 mb
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Erbium
This page is not optimized for Microsoft Internet Explorer.