Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Germanium (Z=32)
  70Ge   72Ge   73Ge   74Ge   76Ge
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
70Ge 71Ge




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.088 ± 5--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
92 ± 5
881985cVdG, TOF, Au:B-VWaB85
84
1971sAGM71
89.38
2006eendfb7
85.28
2004ejeff31
86.91
2002ejendl33
100
2000tRaT99
82
1981tHar81
67
1978tWFH78
138
2002tMOST 2002Gor02
114
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
sSemiempirical estimates given in the reference
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
201
145
121
106
97
88 ± 5
75
69
63
55
49
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
1.20
1.22
1.25
1.26
1.29
1.28
1.26
1.30
1.30
1.31
1.31

MACS:
Reference: WaB85
Procedure: 'e' (The Maxwellian-averaged cross sections (MACS) from kT=5 keV to 100 keV are obtained from experimental data; the relative uncertainties are similar to those quoted for the 30 keV data.)
Year: 1985

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
70Se
41.10 m
β+
71Se
4.74 m
β+
72Se
8.40 d
β+
73Se
7.15 h
β+
74Se
0.89%
267 mb
69As
15.20 m
β+
70As
52.60 m
β+
71As
2.72 d
β+
72As
1.08 d
β+
73As
80.30 d
β+
68Ge
270.95 d
β+
69Ge
1.63 d
β+
70Ge
20.37%
88 mb
71Ge
11.43 d
β+
72Ge
27.31%
73 mb
67Ga
3.26 d
β+
68Ga
1.13 h
β+
69Ga
60.108%
139 mb
70Ga
21.14 m
β-
71Ga
39.892%
123 mb
66Zn
27.9%
35 mb
67Zn
4.1%
153 mb
68Zn
18.75%
19.2 mb
69Zn
56.40 m
β-
70Zn
0.62%
21.5 mb
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Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Germanium