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   198Pt
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
196Pt 197Pt




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.3183 ± 16-12.2 ± 0.5
0.0197 ± 23-13.0 ± 1.4

(Version 0.0 corresponds to Bao et al.)
Comment
New recommended value is weighted average from BMO97 and JM08. New recommended partial cross section deduced from isomeric ratio IR=0.0667 from JM08.
Last review: July 9th, 2009
List of all available values
originalrenorm.yeartypeCommentRef
171 ± 22
2008 cVdG, Act., Au:RaK88; energy dep. from RaT99JM08
197 ± 23
1999cVdG, Act., 1/v(kT), Au:RaK88BMO97,Bee99
160 ± 40
1971eAGM71
147
2000tRaT99
143
1981tHar81
185
1976tHWF76
107
2002tMOST 2002Gor02
88.4
2005tMOST 2005Gor05
Partial cross section to 197mPt:
13.0 ± 1.4
1999cVdG, Act., 1/v(kT), Au:RaK88BMO97,Bee99
11.4 ± 0.5
2008 cVdG, Act., Au:RaK88; energy dep. from RaT99JM08


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
485
316
253
219
198
183 ± 16
164
152
144
132
122
SEF1.001.001.001.001.001.001.001.001.011.021.04
Rate
2.88
2.65
2.60
2.60
2.62
2.66
2.75
2.86
2.97
3.20
3.38

MACS:
Reference: JM08,BMO97,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
196Hg
0.15
204 mb
197Hg
2.67 d
β+
198Hg
9.97
173 mb
199Hg
16.87
374 mb
200Hg
23.1
115 mb
195Au
186.11 d
β+
196Au
6.17 d
β+
197Au
100
582 mb
198Au
2.70 d
840 mb, β-
199Au
3.14 d
β-
194Pt
32.967
365 mb
195Pt
33.832
860 mb
196Pt
25.242
183 mb
197Pt
19.89 h
β-
198Pt
7.163
92.2 mb
193Ir
62.7
994 mb
194Ir
19.28 h
β-
195Ir
2.50 h
β-
196Ir
52.00 s
β-
197Ir
5.80 m
β-
192Os
40.93
155 mb
193Os
1.25 d
β-
194Os
6.00 a
β-
195Os
9.00 m
β-
196Os
34.90 m
β-
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Isotope: Platinum
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