Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Iodine (Z=53)
  127I   129I
Go to isotope
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]
0.0635 ± 30--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
625 ± 30
1983cLinac, TOF, 6Li, Au:Sat.Mac83a
645 ± 50
1980bLinac, 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
655
1997eMug97
760 ± 50
1971eAGM71
726.6
2006eendfb7
706.4
2004ejeff31
668.0
2002ejendl33
654
2000tRaT99
715
1981tHar81
899
1976tHWF76
522
2002tMOST 2002Gor02
470
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
bCalculated from smooth cross sections with model fit: ln(sigma) = a + a1 ln(E) + a2 ln^2(E)
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
1659
1145
929
797
705
635 ± 30
535
467
417
345
302
SEF1.001.001.000.990.990.990.990.990.991.001.00
Rate
9.85
9.60
9.51
9.39
9.26
9.11
8.87
8.67
8.52
8.19
8.06

MACS:
Reference: Mac83a
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: 1983

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

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
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
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Iodine