Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Erbium (Z=68)
  162Er   164Er   166Er   167Er   168Er   169Er   170Er   171Er   172Er
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
172Er 173Er




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.0X ± Y*--

(Version 0.0 corresponds to Bao et al.)
Comment
New dataset. No experimental data available. Recommended value is semi-empirical value.
Last review: August 2014
List of all available values
originalrenorm.yeartypeCommentRef
2005tMOST 2005Gor05
2002tMOST 2002Gor02
2000tNON-SMOKERRaT99


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:
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
SEF1.001.001.001.001.001.001.001.001.001.001.001.00
Rate------------

MACS:
Reference:
Procedure: 't' (The MACS from kT=5 keV to 100 keV are obtained from theoretical calculations with corresponding uncertainties between 25 and 50% in most cases.)
Year: 2014

X-factor:

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

Rate:
Reaction rate NA<σv> given in 100 cm3/mole/s, including SEF
Chart of nuclei
up
left
172Yb
21.83
341 mb
173Yb
16.13
754 mb
174Yb
31.83
151 mb
175Yb
4.18 d
558 mb, β-
176Yb
12.76
115.8 mb
171Tm
1.92 a
486 mb, β-
172Tm
2.65 d
β-
173Tm
8.24 h
β-
174Tm
5.40 m
β-
175Tm
15.20 m
β-
170Er
14.91
170 mb
171Er
7.52 h
β-
172Er
2.05 d
β-
173Er
1.40 m
β-
174Er
3.20 m
β-
169Ho
4.72 m
β-
170Ho
2.76 m
β-
171Ho
53.00 s
β-
172Ho
25.00 s
β-
173Ho
10.00 s
β-
168Dy
8.70 m
β-
169Dy
39.00 s
β-
170Dy
30.00 s
β-
171Dy
6.00 s
β-
172Dy
3.00 s
β-
right
down
Style: (S, M, L, XL or Alberto)


Isotope: Erbium