Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Yttrium (Z=39)
  89Y   90Y   91Y
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
91Y 92Y




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.0103 ± 26*--

(Version 0.0 corresponds to Bao et al.)
Comment
No experimental value available, the rec. value is the average of the theoretical predictions from tendl15, endfb71,jendl40 with a 25% uncertainty.
Last review: December 2016
List of all available values
originalrenorm.yeartypeCommentRef
103.6
2015tTENDL-2015 using the TALYS codetendl15
104.5
2014tJEFF-3.2 using calculations from TENDL-2012jeff32
97.5
2011tENDF/B-VII.1endfb71
118.5
2011tJENDL-4.0jendl40
81.3
2000tNON-SMOKERRaT99


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
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
292
-
202
159
133
116
103 ± 26
87
76
69
60
55
SEF1.001.001.001.001.001.001.001.001.001.001.011.03
Rate
1.74
-
1.70
1.64
1.58
1.54
1.50
1.46
1.43
1.42
1.44
1.50

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:

SEF (Stellar enhancement factor):
Reference: RaT99
Year: 2000
Comment:

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Chart of nuclei
up
left
91Nb
680.04 a
β+
92Nb
34.70 Ma
β+
93Nb
100
266 mb
94Nb
20.30 ka
482 mb, β-
95Nb
34.99 d
310 mb, β-
90Zr
51.45
19.4 mb
91Zr
11.22
60 mb
92Zr
17.15
33 mb
93Zr
1.53 Ma
95 mb, β-
94Zr
17.38
26 mb
89Y
100
19 mb
90Y
2.67 d
β-
91Y
58.51 d
β-
92Y
3.54 h
β-
93Y
10.18 h
β-
88Sr
82.58
6.2 mb
89Sr
50.57 d
19 mb, β-
90Sr
28.90 a
β-
91Sr
9.63 h
β-
92Sr
2.66 h
β-
87Rb
49.69x109 y
15.7 mb, β-
88Rb
17.77 m
β-
89Rb
15.15 m
β-
90Rb
2.63 m
β-
91Rb
58.40 s
β-
right
down
Style: (S, M, L, XL or Alberto)


Isotope: Yttrium