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   48Ca
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
40Ca 41Ca




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.35.73 ± 0.34--
0.06.7 ± 0.7--

(Version 0.0 corresponds to Bao et al.)
Comment
Previous recommended total cross section was 6.7 (7) mb.
Last review: May 27th, 2008
List of all available values
originalrenorm.yeartypeCommentRef
5.73 ± 0.34
2008cVdG, Act. + AMS, Au:RaK88DHK09
6.7 ± 0.7
1976rLinac, TOF, 6Li, Au:Sat.MAB76c
10 ± 3
1976cVdG, TOF, E_{n}=40keVBAK76
5.14
2006eendfb7
5.14
2004ejeff31
5.14
2002ejendl33
13
2000tRaT99
5.8
1978tWFH78
24.1
2002tMOST 2002Gor02
13.9
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
rRecalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
11.96
11.49
9.23
7.56
6.46
5.73 ± 0.44
4.93
4.53
4.28
3.91
3.59
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
7.16
9.73
9.57
9.05
8.65
8.40
8.35
8.58
8.88
9.36
9.61

MACS:
Reference: DHK09, and energy dependence from jendl33,endfb7,jeff31.
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: 2008

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

Rate:
Reaction rate NA<σv> given in 105 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
40Ti
53.30 ms
β+
41Ti
80.40 ms
β+
42Ti
199.00 ms
β+
43Ti
509.00 ms
β+
44Ti
59.99 a
β+
39Sc
0.00 ms
P
40Sc
182.00 ms
β+
41Sc
596.00 ms
β+
42Sc
681.00 ms
β+
43Sc
3.89 h
β+
38Ca
440.00 ms
β+
39Ca
860.00 ms
β+
40Ca
96.94
6.7 mb
41Ca
102.01 ka
30 mb, β+
42Ca
0.647
15.6 mb
37K
1.23 s
β+
38K
7.64 m
β+
39K
93.2581
11.8 mb
40K
1.25x109 y
31 mb, β-
41K
6.7302
22 mb
36Ar
0.3365
9 mb
37Ar
34.95 d
β+
38Ar
0.0632
3 mb
39Ar
269.01 a
8 mb, β-
40Ar
99.6003
2.6 mb
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Isotope: Calcium
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