Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Bromine (Z=35)
  79Br   81Br
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
81Br 82Br




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.3239 ± 7--
0.0313 ± 16--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. cross section is weighted average of HKU08b and Mac88a.
Last review: April 23rd, 2009
List of all available values
originalrenorm.yeartypeCommentRef
235 ± 9
2008cVdG, Act., Au:RaK88HKU08b
244 ± 10
1988cLinac, TOF, 6Li, Au:Sat.Mac88a
317 ± 16
3131986cVdG, Act., 1/v(kT), Au:657mb(25keV)WBK86b
460 ± 80
1971eAGM71
229.1
2006eendfb7
453.1
2004ejeff31
247.1
2002ejendl33
278
2000tRaT99
596
1981tHar81
460
1978tWFH78
243
2002tMOST 2002Gor02
218
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
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
733 
469 
355 
307 
267 
239 ± 7
202 
177 
166 
143 
120 
SEF1.001.001.001.001.001.001.001.001.000.990.98
Rate
4.36
3.95
3.66
3.65
3.55
3.48
3.40
3.32
3.41
3.37
3.12

MACS:
Reference: WBK86b,Mac88a,HKU08b
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: 1988,2008

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
81Rb
4.57 h
β+
82Rb
1.27 m
β+
83Rb
86.20 d
β+
84Rb
33.10 d
β+
85Rb
72.17
234 mb
80Kr
2.28
267 mb
81Kr
229.02 ka
607 mb, β+
82Kr
11.58
90 mb
83Kr
11.49
243 mb
84Kr
57
38 mb
79Br
50.69
622 mb
80Br
17.68 m
β-
81Br
49.31
239 mb
82Br
1.47 d
β-
83Br
2.40 h
β-
78Se
23.77
109 mb
79Se
294.99 ka
263 mb, β-
80Se
49.61
42 mb
81Se
18.45 m
β-
82Se
8.73
9 mb
77As
1.62 d
β-
78As
1.51 h
β-
79As
9.01 m
β-
80As
15.20 s
β-
81As
33.30 s
β-
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Isotope: Bromine
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