Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Germanium (Z=32)
  70Ge   72Ge   73Ge   74Ge   76Ge
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
72Ge 73Ge




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.073 ± 7*--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
65
1971sAGM71
53.10
2006eendfb7
48.24
2004ejeff31
47.60
2002ejendl33
55
2000tRaT99
66
1981tHar81
39
1978tWFH78
118
2002tMOST 2002Gor02
104
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:
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
199
133
106
91
80
73 ± 7
63
57
52
47
43
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
1.18
1.12
1.09
1.08
1.07
1.06
1.06
1.07
1.07
1.12
1.15

MACS:
Reference:
Procedure: 't' (The MACS from kT=5 keV to 100 keV are obtained from theoretical calculations with corresponding uncertainties between 25 and 50% in most cases.)
Year: 2000

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
72Se
8.40 d
β+
73Se
7.15 h
β+
74Se
0.89%
267 mb
75Se
119.78 d
β+
76Se
9.37%
164 mb
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-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Germanium