Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Iridium (Z=77)
  191Ir   192Ir   193Ir
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
192Ir 193Ir




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.02080 ± 450*--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
1290
2000tRaT99
3260
1981tHar81
3460
1976tHWF76
2245
2002tMOST 2002Gor02
1890
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
4276
2811
2519
2333
2192
2080 ± 450
1909
1784
1685
1534
1418
SEF1.011.011.001.000.990.980.960.940.910.870.84
Rate
2.56
2.38
2.60
2.76
2.88
2.97
3.08
3.14
3.16
3.17
3.15

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
192Au
4.94 h
β+
193Au
17.65 h
β+
194Au
1.58 d
β+
195Au
186.11 d
β+
196Au
6.17 d
β+
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-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Iridium