Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Calcium (Z=20)
  40Ca   41Ca   42Ca   43Ca   44Ca   45Ca   46Ca   47Ca   48Ca
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
43Ca 44Ca




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.050.2 ± 5.9--
0.051 ± 6--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is from TENDL-2015 (perfect agreement with MAB77b) using the uncertainty quoted in MAB77b. Note that there is a discrepancy between the evaluations (TENDL-2015 and ENDF/B, JEFF, JENDL), mainly due to the use of different thermal values and widths of the first s-wave resonance at 1.5 keV.
Last review: May 2016
List of all available values
originalrenorm.yeartypeCommentRef
51 ± 6
1977c,2Linac, TOF, 6Li, Au:Sat.MAB77b
50.2
2015eTENDL-2015 using the TALYS codetendl15
35.3
2011eENDF/B-VII.1endfb71
36.8
2011eJENDL-4.0jendl40
34.2
2005tJEFF-3.0/Ajeff30A
35.3
2004eJEFF-3.1jeff31
34.3
2002eJENDL-3.3jendl33
176
2005tMOST 2005Gor05
201
2002tMOST 2002Gor02
33.2
2000tNON-SMOKERRaT99
32
1978tWFH78


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
2Including k from Ref. ABM82, where k is a correction factor which has been applied to the originally reported cross section
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
209.5
-
111.6
81.2
66.1
56.8
50.2 ± 5.9
41.5
35.9
31.9
26.6
23.2
Xfactor1.001.001.001.001.001.001.001.001.001.000.990.99
SEF1.001.001.001.001.001.001.001.001.001.001.000.99
Rate
1.25
-
0.94
0.84
0.79
0.76
0.74
0.70
0.68
0.66
0.64
0.62

MACS:
Reference: MAB77b,tendl2015
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: 2016

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
43Ti
509.00 ms
β+
44Ti
59.99 a
β+
45Ti
3.08 h
β+
46Ti
8.25
26.8 mb
47Ti
7.44
64.4 mb
42Sc
681.00 ms
β+
43Sc
3.89 h
β+
44Sc
3.97 h
β+
45Sc
100
69 mb
46Sc
83.79 d
β-
41Ca
102.01 ka
30 mb, β+
42Ca
0.647
15.6 mb
43Ca
0.135
51 mb
44Ca
2.09
9.4 mb
45Ca
162.62 d
17.5 mb, β-
40K
1.25x109 y
31 mb, β-
41K
6.7302
22 mb
42K
12.32 h
β-
43K
22.30 h
β-
44K
22.13 m
β-
39Ar
269.01 a
8 mb, β-
40Ar
99.6003
2.6 mb
41Ar
1.83 h
β-
42Ar
32.90 a
β-
43Ar
5.37 m
β-
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Isotope: Calcium