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)
198Pt 199Pt




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.392.2 ± 4.6-3.03 ± 0.18
0.082 ± 12-2.69 ± 0.16

(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=0.0328 from BMO97.
Last review: July 9th, 2009
List of all available values
originalrenorm.yeartypeCommentRef
94 ± 5
2008cVdG, Act., Au:RaK88; energy dep. from RaT99JM08
82 ± 12
1999cVdG, Act., 1/v(kT), Au:RaK88BMO97,Bee99
185 ± 20
1971eAGM71
68
2000tRaT99
76
1981tHar81
74
1976tHWF76
97.8
2002tMOST 2002Gor02
88.8
2005tMOST 2005Gor05
Partial cross section to 199mPt:
2.69 ± 0.16
1999cVdG, Act., 1/v(kT), Au:RaK88Partial cross section to 199mPtBMO97,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
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
282
174
134
114
101
92.2 ± 4.6
81.4
74.6
69.7
62.8
58.9
SEF1.001.001.001.001.001.001.001.001.001.011.01
Rate
1.67
1.46
1.38
1.35
1.34
1.34
1.36
1.40
1.43
1.50
1.58

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
198Hg
9.97
173 mb
199Hg
16.87
374 mb
200Hg
23.1
115 mb
201Hg
13.18
264 mb
202Hg
29.86
63.2 mb
197Au
100
582 mb
198Au
2.70 d
840 mb, β-
199Au
3.14 d
β-
200Au
48.40 m
β-
201Au
26.00 m
β-
196Pt
25.242
183 mb
197Pt
19.89 h
β-
198Pt
7.163
92.2 mb
199Pt
30.80 m
β-
200Pt
12.50 h
β-
195Ir
2.50 h
β-
196Ir
52.00 s
β-
197Ir
5.80 m
β-
198Ir
8.00 s
β-
199Ir
20.00 s
β-
194Os
6.00 a
β-
195Os
9.00 m
β-
196Os
34.90 m
β-
197Os
2.80 m
β-
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Isotope: Platinum
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