Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Zirconium (Z=40)
  90Zr   91Zr   92Zr   93Zr   94Zr   95Zr   96Zr
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
91Zr 92Zr




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.362.0 ± 3.4--
0.258.2 ± 2.5--
0.060 ± 8--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is weighted mean from GTa08b, MAM78a, and MaG67b.
Last review: July 28th, 2009
List of all available values
originalrenorm.yeartypeCommentRef
63 ± 4
2008cTOF, Pb Spall., Au; E(n)>26 keV: jendl33GTa08b
57 ± 3
2006cTOF, Pb Spall., AuGTa06
60 ± 8
1978c,2Linac, TOF, 6Li, Au:Sat.MAM78a
53 ± 10
1977cLinac, TOF, 6Li+235U, Au:Sat.MBA77
59 ± 10
1967cVdG, TOF, 181Ta:762mbMaG67b
68 ± 8
1971eAGM71
65.00
2006eendfb7
66.83
2004ejeff31
66.83
2002ejendl33
135
2000tRaT99
66
1981tHar81
128
1976tHWF76
48.4
2002tMOST 2002Gor02
53.7
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
2Including k from Ref. ABM82, where k is a correction factor which has been applied to the originally reported cross section
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
233 ± 12
142 ± 8
104 ± 6
84.7 ± 4.9
70.9 ± 4.9
62.0 ± 3.4
50.2 ± 3.9
43.3 ± 3.9
37.4 ± 3.0
32.5 ± 3.0
27.6 ± 3.0
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
1.39
1.19
1.07
1.01
0.94
0.90
0.84
0.81
0.77
0.77
0.73

MACS:
Reference: GTa08b, MAM78a, MaG67b, jendl33
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
91Mo
15.49 m
β+
92Mo
14.84
70 mb
93Mo
4.00 ka
β+
94Mo
9.25
102 mb
95Mo
15.92
292 mb
90Nb
14.60 h
β+
91Nb
680.04 a
β+
92Nb
34.70 Ma
β+
93Nb
100
266 mb
94Nb
20.30 ka
482 mb, β-
89Zr
3.27 d
β+
90Zr
51.45
19.4 mb
91Zr
11.22
60 mb
92Zr
17.15
33 mb
93Zr
1.53 Ma
95 mb, β-
88Y
106.62 d
β+
89Y
100
19 mb
90Y
2.67 d
β-
91Y
58.51 d
β-
92Y
3.54 h
β-
87Sr
7
92 mb
88Sr
82.58
6.2 mb
89Sr
50.57 d
19 mb, β-
90Sr
28.90 a
β-
91Sr
9.63 h
β-
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Isotope: Zirconium
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