Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Germanium (Z=32)
  70Ge   71Ge   72Ge   73Ge   74Ge   75Ge   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]
1.059 ± 15*--
0.073 ± 7*--

(Version 0.0 corresponds to Bao et al.)
Comment
No exp. data available. New rec. value is average from recent evaluations (tendl15, endfb71/jendl40). Assuming 25% uncertainty.
Last review: June 2016
List of all available values
originalrenorm.yeartypeCommentRef
65.1
2015tTENDL-2015 using the TALYS codetendl15
66.0
2014tJEFF-3.2 using TENDL-2012jeff32
53.1
2011tENDF/B-VII.1endfb71
53.1
2011tJENDL-4.0jendl40
74.7
2004tJEFF-3.0/Ajeff30A
48.2
2004tJEFF-3.1jeff31
47.6
2002tJENDL-3.3jendl33
65
1971sAGM71
104
2005tMOST 2005Gor05
118
2002tMOST 2002Gor02
57.5
2000tNON-SMOKERRaT99
66
1981tHar81
39
1978tWFH78


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:
tTheoretical value
sSemiempirical estimates given in the reference
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
104
-
80
72
67
63
59 ± 15
54
50
47
43
40
Xfactor1.001.001.001.001.001.001.001.001.001.001.001.00
SEF1.001.001.001.001.001.001.001.001.001.001.001.00
Rate
6.19
-
6.74
7.43
7.98
8.39
8.60
9.09
9.41
9.69
10.24
10.65

MACS:
Reference: tendl15,endfb71,jendl40
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: 2016

X-factor:
Reference: Rau12
Year: 2012

SEF (Stellar enhancement factor):
Reference: Rau09
Year: 2009
Comment:

Rate:
Reaction rate NA<σv> given in 106 cm3/mole/s, including SEF
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: (S, M, L, XL or Alberto)


Isotope: Germanium