Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Strontium (Z=38)
  84Sr   86Sr   87Sr   88Sr   89Sr   90Sr
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
88Sr 89Sr




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.06.31 ± 0.20--
0.26.13 ± 0.11--
0.06.2 ± 0.3--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is weighted average of Koe00 and KZB90 (normalized by 632/586= 1.0785) and Mac89. Used normalized energy dependence and uncertainties of Koe00. Note that the values from the evaluated libraries are 20% lower than the recommended value. There is also a discrepancy between the latest TOF value of Koe00 and the activation value from KZB90. More investigation needed.
Last review: December 2016
List of all available values
originalrenorm.yeartypeCommentRef
9.40 ± 0.63
E(n,av.)= 30 (4) keV
2011cPelletron, TOF, Au:ENDF/B-VI and MaG67bKHI11
6.01 ± 0.17
2000cLinAc, TOF, Au: Sat.; DC component is 0.61 mbKoe00, Koe00E
6.13 ± 0.18
6.61 ± 0.191990cVdG, Act., 1/v(kT), Au:RaK88 corrected by 632/586= 1.0785KZB90
6.5 ± 0.3
1989cLinac, TOF, 6Li, Au:Sat.Mac89
6.2 ± 0.5
1978c,2Linac, TOF, 6Li, Au:Sat., k=1.0737MAM78a
5.6 ± 0.5
1976cLinac, TOF, 6Li, Au:Sat.BAM76
6.9 ± 1.7
1967cVdG, TOF, 181Ta:762mbMaG67b
5.37
2015eTENDL-2015 using the TALYS codetendl15
5.38
2014eJEFF-3.2 using calculations from TENDL-2012jeff32
5.22
2011eENDF/B-VII.1endfb71
5.33
2011eJENDL-4.0jendl40
0.85
2004eJEFF-3.1jeff31
6.35
2002eJENDL-3.3jendl33
6.9 ± 2.5
1971eAGM71
5.02
2005tMOST 2005Gor05
5.59
2002tMOST 2002Gor02
15.3
2000tNON-SMOKERRaT99
12.5
1981tHar81
9.5
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:
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
9.65 ± 0.31
11.23 ± 0.36
10.85 ± 0.35
9.32 ± 0.28
7.98 ± 0.24
7.01 ± 0.21
6.31 ± 0.20
5.41 ± 0.17
4.88 ± 0.17
4.56 ± 0.17
4.32 ± 0.17
4.07 ± 0.17
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
5.74
8.45
9.12
9.60
9.49
9.32
9.19
9.10
9.18
9.39
10.28
10.82

MACS:
Reference: Koe00,KZB90,Mac89
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: 2015

X-factor:
Reference: Rau12
Year: 2012

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

Rate:
Reaction rate NA<σv> given in 105 cm3/mole/s, including SEF
Chart of nuclei
up
left
88Zr
83.40 d
β+
89Zr
3.27 d
β+
90Zr
51.45
19.4 mb
91Zr
11.22
60 mb
92Zr
17.15
33 mb
87Y
3.33 d
β+
88Y
106.62 d
β+
89Y
100
19 mb
90Y
2.67 d
β-
91Y
58.51 d
β-
86Sr
9.86
64 mb
87Sr
7
92 mb
88Sr
82.58
6.2 mb
89Sr
50.57 d
19 mb, β-
90Sr
28.90 a
β-
85Rb
72.17
234 mb
86Rb
18.64 d
202 mb, β-
87Rb
49.69x109 y
15.7 mb, β-
88Rb
17.77 m
β-
89Rb
15.15 m
β-
84Kr
57
38 mb
85Kr
10.72 a
55 mb, β-
86Kr
17.3
3.4 mb
87Kr
1.27 h
β-
88Kr
2.84 h
β-
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Style: (S, M, L, XL or Alberto)


Isotope: Strontium