Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Platinum (Z=78)
  190Pt   192Pt   193Pt   194Pt   195Pt   196Pt   197Pt   198Pt
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
194Pt 195Pt




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.0283 ± 8-21 ± 2
0.0365 ± 85-27 ± 2

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is from KoG13. MACS for kT=40-100 keV extrapolated with normalized energy dependence (f(norm= 0.86)) from NON-SMOKER RaT99. Uncertainty is 4.1 % KoG13. Isomeric ratio at kT= 30 keV is IR= 0.074.
Last review: April 2014
List of all available values
originalrenorm.yeartypeCommentRef
283 ± 8
2013cLinac, TOF, Au: Sat.KoG13
365 ± 85
1999cVdG, Act., 1/v(kT), Au:RaK88BMO97,Bee99
310
1971sAGM71
221
2005tMOST 2005Gor05
257
2002tMOST 2002Gor02
278
2000tNON-SMOKERRaT99
243
1981tHar81
386
1976tHWF76
Partial cross section to 195mPt:
27 ± 2
1999cVdG, Act., 1/v(kT), Au:RaK88BMO97,Bee99


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
sSemiempirical estimates given in the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
686 ± 21
508 ± 15
446 ± 13
361 ± 11
320 ± 9
297 ± 9
283 ± 8
250 ± 7
233 ± 7
221 ± 7
205 ± 6
192 ± 6
Xfactor1.001.001.001.001.001.001.001.000.990.970.890.78
SEF1.001.001.001.001.001.001.001.001.001.011.031.07
Rate
4.07
3.81
3.74
3.71
3.79
3.94
4.11
4.20
4.39
4.58
5.03
5.44

MACS:
Reference: KoG13,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: 2013

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
194Hg
443.96 a
β+
195Hg
10.53 h
β+
196Hg
0.15
204 mb
197Hg
2.67 d
β+
198Hg
9.97
173 mb
193Au
17.65 h
β+
194Au
1.58 d
β+
195Au
186.11 d
β+
196Au
6.17 d
β+
197Au
100
582 mb
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-
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Style: (S, M, L, XL or Alberto)


Isotope: Platinum