Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Holmium (Z=67)
  163Ho   165Ho
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
165Ho 166Ho




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.01280 ± 100798 ± 120-

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
1134 ± 60
1992cVdG, TOF, Au+Ag+Nd+etc.:Sat.BKP92
1419 ± 71
1981bLinac, TOF, 6Li, Au:Sat.MaW81
1209 ± 61
1980bLinac, TOF, 10B:B-IVYSE80
1333 ± 300
11141979cF.N.B., Act., 1/v(E), 127I:832mb(25keV)AJB79
1145 ± 120
1978cF.N.B., Act., 1/v(E), 10B, Ag:Sat.YDM78
1380 ± 100
1973bLinac, TOF, 10B:SPU71, Ag:Sat.CzS73
1480 ± 225
14121972cVdG, TOF, In:740 (70)mbLDM72
1250 ± 150
1971eAGM71
1335
2006eendfb7
1336
2004ejeff31
1147
2000tRaT99
1853
1981tHar81
1430
1976tHWF76
1298
2002tMOST 2002Gor02
884
2005tMOST 2005Gor05
Partial cross section to 166gHo:
1064 ± 120
23keV
7981973cSb-Be, Act., 1/v(E), 127I:836mb(23keV)SSR73


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
3301
2316
1867
1598
1416
1280 ± 100
1092
967
877
761
692
SEF1.001.001.001.001.001.000.990.990.980.970.95
Rate
1.96
1.94
1.92
1.90
1.88
1.86
1.82
1.79
1.77
1.75
1.75

MACS:
Reference: MaW81,BKP92
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: 1992

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
165Tm
1.25 d
β+
166Tm
7.70 h
β+
167Tm
9.25 d
β+
168Tm
93.10 d
β+
169Tm
100%
1129 mb
164Er
1.601%
1084 mb
165Er
10.36 h
β+
166Er
33.503%
563 mb
167Er
22.869%
1425 mb
168Er
26.978%
338 mb
163Ho
4.57 ka
2125 mb, β+
164Ho
29.00 m
β+
165Ho
100%
1280 mb
166Ho
1.12 d
β-
167Ho
3.00 h
β-
162Dy
25.51%
446 mb
163Dy
24.9%
1112 mb
164Dy
28.18%
212 mb
165Dy
2.33 h
β-
166Dy
3.40 d
β-
161Tb
6.91 d
β-
162Tb
7.60 m
β-
163Tb
19.50 m
β-
164Tb
3.00 m
β-
165Tb
2.11 m
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Holmium