Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Iodine (Z=53)
  127I   128I   129I   135I
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
127I 128I




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.0662 ± 89--
0.0635 ± 30--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is from jendl40 which fits data of Mac83a, YSE80, and NBL04. Uncertainties from covariance data of endfb71.
Last review: July 2013
List of all available values
originalrenorm.yeartypeCommentRef
790 ± 43
E(n)= 30 keV
2004cLinac, TOF, BF3, 10BNBL04
625 ± 30
1983cLinac, TOF, 6Li, Au:Sat.Mac83a
675 ± 47
E(n)= 30-35 keV
1980cLinac, TOF, 10B:B-IV+YDM78YSE80
698 ± 80
1978cF.N.B., Act., 1/v(E), 10B:B-IV, Ag:Sat.YDM78
571
1970cSb-Be, Act., 1/v(E), Au:640mb(24keV)ChP70
722.2 ± 97.5
2011eENDF/B-VII.1 incl. covariancesendfb71
662.7
2011eJENDL-4.0jendl40
706.4
2004eJEFF-3.1jeff31
668.0
2002eJENDL-3.3jendl33
655
1997eMug97
760 ± 50
1971eAGM71
470
2005tMOST 2005Gor05
522
2002tMOST 2002Gor02
654
2000tNON-SMOKERRaT99
715
1981tHar81
899
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
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
1726 ± 185
-
1205 ± 141
976 ± 121
835 ± 108
737 ± 98
662 ± 89
556 ± 77
483 ± 67
430 ± 60
358 ± 50
310 ± 43
Xfactor1.001.001.000.980.940.890.850.770.710.660.580.53
SEF1.001.001.001.000.990.990.990.990.990.991.001.00
Rate
1.02
-
1.01
1.00
0.98
0.97
0.95
0.92
0.90
0.88
0.85
0.83

MACS:
Reference: 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 108 cm3/mole/s, including SEF
Chart of nuclei
up
left
127Cs
6.25 h
β+
128Cs
3.66 m
β+
129Cs
1.34 d
β+
130Cs
29.21 m
β+
131Cs
9.69 d
β+
126Xe
0.089
359 mb
127Xe
36.40 d
β+
128Xe
1.91
248 mb
129Xe
26.4
472 mb
130Xe
4.071
141 mb
125I
59.40 d
β+
126I
12.93 d
β+
127I
100
635 mb
128I
24.99 m
β-
129I
15.70 Ma
441 mb, β-
124Te
4.74
155 mb
125Te
7.07
431 mb
126Te
18.84
81.3 mb
127Te
9.35 h
β-
128Te
31.74
44.4 mb
123Sb
42.79
303 mb
124Sb
60.11 d
β-
125Sb
2.76 a
260 mb, β-
126Sb
12.35 d
β-
127Sb
3.85 d
β-
right
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Style: (S, M, L, XL or Alberto)


Isotope: Iodine