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   193Os   194Os
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
190Os 191Os




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.0278 ± 11--
0.3274 ± 12--
0.0295 ± 45--

(Version 0.0 corresponds to Bao et al.)
Comment
Rec. value is from MDD14 and JM08 using normalized energy dependencies from jendl40.
Last review: June 2014
List of all available values
originalrenorm.yeartypeCommentRef
278 ± 11
2014cVdG, Act., Au:RaK88; energy dep. from jendl40MDD14,JM08
358 ± 31
E(n)= 32 (4) keV
1981cLinac, TOF, 6Li:B-IV, 165Ho:Sat.BrB81
358 ± 38
E(n)= 24.3 keV
1979cF.N.B., Act., 1/v(E), Au: 621 (3) mb (24 keV)BPS79
477 ± 71
E(n)= 23 (5) keV
1973cSb-Be, Act., 1/v(E), 127I:836 mb (23 keV)SSR73
356.8
2011eJENDL-4.0jendl40
230
1971sAGM71
365
2002tMOST 2002Gor02
403
2005tMOST 2005Gor05
215
2000tNON-SMOKERRaT99
213
1981tHar81
577
1976tHWF76


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
sSemiempirical estimates given in the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
662
-
442
362
321
296
278 ± 11
254
235
220
195
175
Xfactor1.001.001.001.001.001.000.980.930.850.760.580.45
SEF1.001.001.001.001.001.001.011.021.051.081.151.22
Rate
3.92
-
3.71
3.72
3.81
3.93
4.06
4.35
4.62
4.88
5.32
5.66

MACS:
Reference: MDD14,jendl40
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: 2014

X-factor:
Reference: Rau12
Year: 2012

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

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Chart of nuclei
up
left
190Pt
650.00x109 y
508 mb, α
191Pt
2.86 d
β+
192Pt
0.782
590 mb
193Pt
50.01 a
1123 mb, β+
194Pt
32.967
365 mb
189Ir
13.20 d
β+
190Ir
11.78 d
β+
191Ir
37.3
1350 mb
192Ir
73.83 d
2080 mb, β-
193Ir
62.7
994 mb
188Os
13.29
399 mb
189Os
16.21
1168 mb
190Os
26.36
274 mb
191Os
15.40 d
1290 mb, β-
192Os
40.93
155 mb
187Re
41.20x109 y
1160 mb, β-
188Re
17.00 h
β-
189Re
1.01 d
β-
190Re
3.10 m
β-
191Re
9.80 m
β-
186W
28.43
235 mb
187W
23.72 h
β-
188W
69.78 d
β-
189W
10.70 m
β-
190W
30.00 m
β-
right
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Style: (S, M, L, XL or Alberto)


Isotope: Osmium