Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Technetium (Z=43)
  99Tc
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
99Tc 100Tc




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.2933 ± 47--
0.0781 ± 50--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: January 27th, 2006
List of all available values
originalrenorm.yeartypeCommentRef
933 ± 47
2000cLinac, TOFGLM00, GLM01
782 ± 50
1987cLinac, TOF, 6Li, Au:Sat.WiM87
779 ± 40
1982bLinac, TOF, 6Li, Au:Sat.Mac82b
761
1981eKNM81
800
1971sAGM71
910.2
2006eendfb7
892.4
2004ejeff31
794.8
2002ejendl33
589
2000tRaT99
799
1981tHar81
649
1976tHWF76
490
2002tMOST 2002Gor02
423
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
sSemiempirical estimates given in the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
1849
1370
1131
976
865
781 ± 50
662
580
530
445
377
SEF1.001.001.001.001.001.000.990.970.960.920.90
Rate
1.10
1.15
1.16
1.16
1.15
1.13
1.10
1.06
1.04
0.98
0.90

MACS:
Reference: WiM87
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: 1987

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
99Rh
16.10 d
β+
100Rh
20.80 h
β+
101Rh
3.30 a
β+
102Rh
206.94 d
β+
103Rh
100
811 mb
98Ru
1.87
173 mb
99Ru
12.76
631 mb
100Ru
12.6
206 mb
101Ru
17.06
996 mb
102Ru
31.55
186 mb
97Tc
4.21 Ma
β+
98Tc
4.20 Ma
β-
99Tc
211.11 ka
781 mb, β-
100Tc
15.80 s
β-
101Tc
14.22 m
β-
96Mo
16.68
112 mb
97Mo
9.55
339 mb
98Mo
24.13
99 mb
99Mo
2.75 d
240 mb, β-
100Mo
9.63
108 mb
95Nb
34.99 d
310 mb, β-
96Nb
23.35 h
β-
97Nb
1.20 h
β-
98Nb
2.86 s
β-
99Nb
15.00 s
β-
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Isotope: Technetium
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