Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Gallium (Z=31)
  69Ga   71Ga
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
71Ga 72Ga




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.0123 ± 8--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
125 ± 8
1231986cVdG, Act., 1/v(kT), Au:657mb(25keV)WBK86b
95 ± 28
791979cF.N.B., Act., 1/v(E), 127I:832mb(25keV)AJB79
120 ± 30
1971eAGM71
122.3
2006eendfb7
103.2
2002ejendl33
86
2000tRaT99
93
1981tHar81
50
1978tWFH78
131
2002tMOST 2002Gor02
117
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:
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
398
249
191
159
138
123 ± 8
103
90
81
69
60
SEF1.001.001.001.001.001.001.001.001.000.990.98
Rate
2.37
2.10
1.97
1.89
1.84
1.79
1.73
1.69
1.67
1.64
1.57

MACS:
Reference: RaT99,WBK86b
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: 1986

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
71As
2.72 d
β+
72As
1.08 d
β+
73As
80.30 d
β+
74As
17.77 d
β+
75As
100%
362 mb
70Ge
20.37%
88 mb
71Ge
11.43 d
β+
72Ge
27.31%
73 mb
73Ge
7.76%
243 mb
74Ge
36.73%
37.6 mb
69Ga
60.108%
139 mb
70Ga
21.14 m
β-
71Ga
39.892%
123 mb
72Ga
14.10 h
β-
73Ga
4.86 h
β-
68Zn
18.75%
19.2 mb
69Zn
56.40 m
β-
70Zn
0.62%
21.5 mb
71Zn
2.45 m
β-
72Zn
1.94 d
β-
67Cu
2.58 d
β-
68Cu
31.10 s
β-
69Cu
2.85 m
β-
70Cu
44.50 s
β-
71Cu
19.50 s
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Gallium