Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Rubidium (Z=37)
  85Rb   86Rb   87Rb
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
85Rb 86Rb




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.0240 ± 9--
0.3234 ± 7--
0.0240 ± 9--

(Version 0.0 corresponds to Bao et al.)
Comment
New recommended value is weighted average of BeM89 and HKU08b (corrected by 632 mb/586 mb= 1.0785) which are on perfect agreement. Used normalized energy dependence from recent libraries (tendl15, jeff32, endfb71,jendl40) which are in perfect agreement (within 2%) with the E-dependence of BeM89. Uncertainties are derived from the standard deviation between the libraries, and interpolated between 5 and 30 keV and 30 and 100 keV.
Last review: December 2016
List of all available values
originalrenorm.yeartypeCommentRef
221 ± 9
238 ± 102008cVdG, Act., Au:RaK88 corrected by 632/586= 1.0785HKU08b
241 ± 9
1989cLinac, TOF, 6Li+235U, Au:Sat.BeM89
360 ± 20
374 ± 211986cVdG, Act., 1/v(kT), Au: 657mb (25keV) norm. by 683/657= 1.04Wal84,WBK86a
252.9
2015eTENDL-2015 using the TALYS codetendl15
263.2
2014eJEFF-3.2 using calculations from TENDL-2012jeff32
282.4
2011eENDF/B-VII.1endfb71
290.4
2011eJENDL-4.0jendl40
262.7
2004eJEFF-3.1jeff31
282.6
2002eJENDL-3.3jendl33
215 ± 20
1971eAGM71
197
2005tMOST 2005Gor05
212
2002tMOST 2002Gor02
453
2000tNON-SMOKERRaT99
278
1981tHar81
387
1976tHWF76
Partial cross section to 85mRb:
35.0 ± 3.6
E(n)= 25 (5) keV
1972cSb-Be, Act., 1/v(E), 127I:832mb(24keV); partial xs to isomerLRR72


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
710 ± 34
-
488 ± 22
380 ± 17
315 ± 13
271 ± 11
240 ± 9
198 ± 10
170 ± 11
150 ± 11
124 ± 13
107 ± 14
Xfactor1.001.001.001.001.001.001.000.990.990.980.960.93
SEF1.001.001.001.001.001.001.000.990.980.970.940.91
Rate
4.22
-
4.10
3.91
3.75
3.60
3.49
3.30
3.13
2.99
2.77
2.60

MACS:
Reference: BeM89,HKU08b, tendl15, jeff32, 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: 2015

X-factor:
Reference: Rau12
Year: 2012

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

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Chart of nuclei
up
left
85Y
2.68 h
β+
86Y
14.74 h
β+
87Y
3.33 d
β+
88Y
106.62 d
β+
89Y
100
19 mb
84Sr
0.56
368 mb
85Sr
64.84 d
β+
86Sr
9.86
64 mb
87Sr
7
92 mb
88Sr
82.58
6.2 mb
83Rb
86.20 d
β+
84Rb
33.10 d
β+
85Rb
72.17
234 mb
86Rb
18.64 d
202 mb, β-
87Rb
49.69x109 y
15.7 mb, β-
82Kr
11.58
90 mb
83Kr
11.49
243 mb
84Kr
57
38 mb
85Kr
10.72 a
55 mb, β-
86Kr
17.3
3.4 mb
81Br
49.31
239 mb
82Br
1.47 d
β-
83Br
2.40 h
β-
84Br
31.80 m
β-
85Br
2.90 m
β-
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Style: (S, M, L, XL or Alberto)


Isotope: Rubidium