Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Disclaimer]   [Contact]
p-process
Available isotopes for Bromine (Z=35)
  79Br   81Br
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
79Br 80Br




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.3622 ± 34-171 ± 17
0.0627 ± 42-78 ± 8

(Version 0.0 corresponds to Bao et al.)
Comment
New recomm. value is weighted average of WBK86b and HKU08b.
New recomm. partial cross section to isomer is deduced from isomeric ratio IR=0.274 HKU08b.
Last review: April 23rd, 2009
List of all available values
originalrenorm.yeartypeCommentRef
613 ± 59
2008cVdG, Act., Au:RaK88HKU08b
741 ± 30
1988cLinac, TOF, 6Li, Au:Sat.Mac88a
636 ± 42
6271986cVdG, Act., 1/v(kT), Au:657mb(25keV)WBK86b
600 ± 150
1971eAGM71
687.8
2006eendfb7
731.6
2004ejeff31
687.8
2002ejendl33
443
2000tRaT99
749
1981tHar81
520
1978tWFH78
434
2002tMOST 2002Gor02
421
2005tMOST 2005Gor05
Partial cross section to 80mBr:
174 ± 17
168 ± 162008cVdG, Act., Au:RaK88HKU08b
79 ± 8
781984cVdG, Act., 1/v(kT), Au:657mb(25keV)Wal84


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
1768
1180
934
793
698
628 ± 34
534
469
436
371
305
SEF1.001.001.001.001.001.001.000.990.990.970.95
Rate
1.05
0.99
0.96
0.94
0.93
0.92
0.90
0.88
0.89
0.85
0.77

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 108 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
79Rb
22.90 m
β+
80Rb
33.40 s
β+
81Rb
4.57 h
β+
82Rb
1.27 m
β+
83Rb
86.20 d
β+
78Kr
0.35
321 mb
79Kr
1.46 d
959 mb, β+
80Kr
2.28
267 mb
81Kr
229.02 ka
607 mb, β+
82Kr
11.58
90 mb
77Br
2.38 d
β+
78Br
6.46 m
β+
79Br
50.69
622 mb
80Br
17.68 m
β-
81Br
49.31
239 mb
76Se
9.37
164 mb
77Se
7.63
418 mb
78Se
23.77
109 mb
79Se
294.99 ka
263 mb, β-
80Se
49.61
42 mb
75As
100
362 mb
76As
1.09 d
β-
77As
1.62 d
β-
78As
1.51 h
β-
79As
9.01 m
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Bromine
This page is not optimized for Microsoft Internet Explorer.