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-
right
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Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Platinum