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)
191Os 192Os




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.01290 ± 280*--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
802
2000tRaT99
1090
1976tHWF76
1565
2002tMOST 2002Gor02
1399
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:
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
3264
2237
1812
1568
1407
1290 ± 280
1128
1017
934
814
729
SEF1.001.001.000.990.990.980.950.910.880.810.76
Rate
1.94
1.88
1.86
1.85
1.84
1.83
1.79
1.74
1.68
1.57
1.47

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: 2000

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
191Pt
2.86 d
β+
192Pt
0.782%
590 mb
193Pt
50.01 a
1123 mb, β+
194Pt
32.967%
365 mb
195Pt
33.832%
860 mb
190Ir
11.78 d
β+
191Ir
37.3%
1350 mb
192Ir
73.83 d
2080 mb, β-
193Ir
62.7%
994 mb
194Ir
19.28 h
β-
189Os
16.21%
1168 mb
190Os
26.36%
274 mb
191Os
15.40 d
1290 mb, β-
192Os
40.93%
155 mb
193Os
1.25 d
β-
188Re
17.00 h
β-
189Re
1.01 d
β-
190Re
3.10 m
β-
191Re
9.80 m
β-
192Re
16.00 s
β-
187W
23.72 h
β-
188W
69.78 d
β-
189W
10.70 m
β-
190W
30.00 m
β-
191W
0.00 ms
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Osmium