Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Tin (Z=50)
  112Sn   114Sn   115Sn   116Sn   117Sn   118Sn   119Sn   120Sn   121Sn   121mSn   122Sn   123Sn   124Sn   125Sn   126Sn
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
122Sn 123Sn




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.022.6 ± 7.8-21.7 ± 0.2
0.021.9 ± 1.5-18 ± 1

(Version 0.0 corresponds to Bao et al.)
Comment
Recommended value and MACS vs. kT table are average of recent evaluations (endfb71,jendl40). Uncertainty is deviation between both evaluations. Isomeric ratio at kT= 25 keV is IR= 0.956, at kT= 52 keV it is IR= 0.897.
Last review: June 2013
List of all available values
originalrenorm.yeartypeCommentRef
40 ± 4
361989cVdG, TOF, 6Li, Au:B-V+KKP85TBI89
14.9
2011eENDF/B-VII.1endfb71
30.4
2011eJENDL-4.0jendl40
23.9
2004eJEFF-3.1jeff31
23.9
2002eJENDL-3.3jendl33
23 ± 5
1971eAGM71
32.9
2005tMOST 2005Gor05
45.1
2002tMOST 2002Gor02
39
2000tNON-SMOKERRaT99
44
1981tHar81
34
1976tHWF76
Partial cross section to 123mSn:
24.78 ± 0.23
kT= 25 keV
1998cVdG, Act., 1/v(kT), Au:648mb(25keV)Sta98
14.12 ± 0.38
kT= 52 keV
1998cVdG, Act., 1/v(kT), Au:431mb(52keV)Sta98
23 ± 5
E(n)= 25 (5) keV
1979cF.N.B., Act., 1/v(E), 127I:832mb(25keV)AJB79
26 ± 3
E(n)= 24 (5) keV
1973cSb-Be, Act., 1/v(E), 127I:832mb(24keV)MSR73


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
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
83.7 ± 27.8
-
51.8 ± 15.8
38.2 ± 11.7
30.7 ± 9.7
25.9 ± 8.5
22.6 ± 7.8
18.5 ± 6.9
16.0 ± 6.4
14.5 ± 6.0
12.9 ± 5.4
12.3 ± 4.8
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
4.97
-
4.35
3.93
3.65
3.44
3.29
3.11
3.00
2.98
3.06
3.27

MACS:
Reference: 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: 2013

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
122Te
2.55
295 mb
123Te
0.89
832 mb
124Te
4.74
155 mb
125Te
7.07
431 mb
126Te
18.84
81.3 mb
121Sb
57.21
532 mb
122Sb
2.72 d
894 mb, β-
123Sb
42.79
303 mb
124Sb
60.11 d
β-
125Sb
2.76 a
260 mb, β-
120Sn
32.58
36 mb
121Sn
1.13 d
167 mb, β-
122Sn
4.63
21.9 mb
123Sn
129.17 d
β-
124Sn
5.79
12 mb
119In
2.40 m
β-
120In
3.08 s
β-
121In
23.10 s
β-
122In
1.50 s
β-
123In
6.17 s
β-
118Cd
50.30 m
β-
119Cd
2.69 m
β-
120Cd
50.80 s
β-
121Cd
13.50 s
β-
122Cd
5.24 s
β-
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Isotope: Tin