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)
94Zr 95Zr




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.029.0 ± 1.1--
0.026 ± 1--

(Version 0.0 corresponds to Bao et al.)
Comment
The new recommended value is a weighted average of the TOF measurement from GTa11 and the renormalized activation measurement of ToK90. The MACS vs. kT table from kT=5-15 keV is from GTa11, and from 20-100 keV the average from recent evaluations (jendl40,endfb71,tendl15).
Last review: December 2016
List of all available values
originalrenorm.yeartypeCommentRef
25.9 ± 2.6
27.9 ± 2.82013,2015uVdG, Act., 1/v(kT), Au:RaK88 corrected by 632/586= 1.0785; energy-dep. from endfb71 and jendl40; unpublishedID13b
30.5 ± 2.0
2011cTOF, Pb Spall., Au: Sat.; E-dep. for E>60 keV from jendl33GTa11
26.4 ± 1.0
28.5 ± 1.11990cVdG, Act., 1/v(kT), Au:RaK88 corrected by 632/586= 1.0785 ToK90
25 ± 4
26.6 ± 4.31983cVdG, Act., Au:576mb, norm. by 613mb/576 mb= 1.064WyP83
33 ± 5
1978c,2Linac, TOF, 6Li, Au:Sat., k=0.9833MAM78a
26.6 ± 3.0
1976c,2Linac, TOF, 6Li, Au:Sat., k=0.9833BMA76
21 ± 4
1967cVdG, TOF, 181Ta:762mbMaG67b
29.0
2015eTENDL-2015 using the TALYS codetendl15
29.1
2014eJEFF-3.2 using calculations from TENDL-2012jeff32
29.0 ± 2.9
2011eENDF/B-VII.1 incl. covariancesendfb71
26.1
2011eJENDL-4.0jendl40
29.1
2006eENDF/B-VII.0endfb7
30.0
2004eJEFF-3.1jeff31
30.0
2002eJENDL-3.3jendl33
20 ± 2
1971eAGM71
13.3
2005tMOST 2005Gor05
21.9
2002tMOST 2002Gor02
66.1
2000tNON-SMOKERRaT99
57
1981tHar81
34
1976tHWF76


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:
uUnpublished value
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
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
70.3 ± 3.5
58.5 ± 2.9
52.4 ± 2.6
42.3 ± 2.2
37.7 ± 2.1
32.6 ± 2.0
29.0 ± 1.1
24.6 ± 1.8
22.0 ± 1.7
20.4 ± 1.7
18.6 ± 1.6
17.6 ± 1.6
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
4.18
4.40
4.41
4.36
4.48
4.33
4.22
4.14
4.14
4.20
4.42
4.68

MACS:
Reference: GTa11, ToK90, tendl15,endfb71,jendl40
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: 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
94Mo
9.25
102 mb
95Mo
15.92
292 mb
96Mo
16.68
112 mb
97Mo
9.55
339 mb
98Mo
24.13
99 mb
93Nb
100
266 mb
94Nb
20.30 ka
482 mb, β-
95Nb
34.99 d
310 mb, β-
96Nb
23.35 h
β-
97Nb
1.20 h
β-
92Zr
17.15
33 mb
93Zr
1.53 Ma
95 mb, β-
94Zr
17.38
26 mb
95Zr
64.03 d
79 mb, β-
96Zr
2.8
10.7 mb
91Y
58.51 d
β-
92Y
3.54 h
β-
93Y
10.18 h
β-
94Y
18.70 m
β-
95Y
10.30 m
β-
90Sr
28.90 a
β-
91Sr
9.63 h
β-
92Sr
2.66 h
β-
93Sr
7.42 m
β-
94Sr
1.25 m
β-
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Style: (S, M, L, XL or Alberto)


Isotope: Zirconium