Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Osmium (Z=76)
  184Os   186Os   187Os   188Os   189Os   190Os   191Os   192Os
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
192Os 193Os




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.3155 ± 7--
0.0311 ± 45--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: July 9th, 2009
List of all available values
originalrenorm.yeartypeCommentRef
155 ± 7
2008 cVdG, Act., Au:RaK88; energy dep. from RaT99JM08
311 ± 45
1981cLinac, TOF, 6Li:B-IV, 165Ho:Sat.BrB81
144 ± 15
1531979cF.N.B., Act., 1/v(E), Au:621mb(24keV)BPS79
200
1971eAGM71
125
2000tRaT99
127
1981tHar81
109
1976tHWF76
280
2002tMOST 2002Gor02
240
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
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
416
269
215
186
168
155 ± 7
138
126
116
101
89
SEF1.001.001.001.001.001.001.011.021.041.081.13
Rate
2.47
2.26
2.21
2.21
2.23
2.26
2.34
2.42
2.48
2.60
2.67

MACS:
Reference: JM08,RaT99
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: 2008

SEF (Stellar enhancement factor):
Reference: Rau09
Year: 2009
Comment:

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
192Pt
0.782
590 mb
193Pt
50.01 a
1123 mb, β+
194Pt
32.967
365 mb
195Pt
33.832
860 mb
196Pt
25.242
183 mb
191Ir
37.3
1350 mb
192Ir
73.83 d
2080 mb, β-
193Ir
62.7
994 mb
194Ir
19.28 h
β-
195Ir
2.50 h
β-
190Os
26.36
274 mb
191Os
15.40 d
1290 mb, β-
192Os
40.93
155 mb
193Os
1.25 d
β-
194Os
6.00 a
β-
189Re
1.01 d
β-
190Re
3.10 m
β-
191Re
9.80 m
β-
192Re
16.00 s
β-
193Re
30.00 s
β-
188W
69.78 d
β-
189W
10.70 m
β-
190W
30.00 m
β-
191W
0.00 ms
β-
192W
0.00 ms
β-
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Isotope: Osmium
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