Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Yttrium (Z=39)
  89Y
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
89Y 90Y




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.019.0 ± 0.6--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
19.0 ± 0.6
1990cVdG, Act., 1/v(kT), Au:RaK88KZB90
21 ± 3
1978c,2Linac, TOF, 6Li, Au:Sat., k=1.0360MAM78a
13.5 ± 1.3
1977c,2Linac, TOF, 6Li, Au:Sat., k=1.0360BAM77
21 ± 4
1971eAGM71
17.01
2006eendfb7
27.26
2004ejeff31
20.64
2002ejendl33
65
2000tRaT99
32
1981tHar81
41
1976tHWF76
18.8
2002tMOST 2002Gor02
16.6
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
68
40
30
25
21
19.0 ± 0.6
16
14
13
11
10
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
4.04
3.36
3.09
2.97
2.79
2.77
2.69
2.63
2.68
2.62
2.66

MACS:
Reference: KZB90,MAM78a
Procedure: 'e' (The Maxwellian-averaged cross sections (MACS) from kT=5 keV to 100 keV are obtained from experimental data; the relative uncertainties are similar to those quoted for the 30 keV data.)
Year: 1990

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

Rate:
Reaction rate NA<σv> given in 106 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
89Nb
2.03 h
β+
90Nb
14.60 h
β+
91Nb
680.04 a
β+
92Nb
34.70 Ma
β+
93Nb
100%
266 mb
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-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Yttrium