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)
45Ca 46Ca




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.017.5 ± 3.5*--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
18
2000tRaT99
14
1978tWFH78
69.8
2002tMOST 2002Gor02
61.5
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:
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
71
41
30
24
20
17.5 ± 3.5
14.0
11.8
10.1
8.1
6.7
SEF1.001.001.001.001.001.001.000.990.980.970.95
Rate
4.24
3.47
3.11
2.87
2.67
2.56
2.36
2.21
2.06
1.87
1.71

MACS:
Reference:
Procedure: 't' (The MACS from kT=5 keV to 100 keV are obtained from theoretical calculations with corresponding uncertainties between 25 and 50% in most cases.)
Year: 2000

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

Rate:
Reaction rate NA<σv> given in 106 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
45Ti
3.08 h
β+
46Ti
8.25%
26.8 mb
47Ti
7.44%
64.4 mb
48Ti
73.72%
31.8 mb
49Ti
5.41%
22.1 mb
44Sc
3.97 h
β+
45Sc
100%
69 mb
46Sc
83.79 d
β-
47Sc
3.35 d
β-
48Sc
1.82 d
β-
43Ca
0.135%
51 mb
44Ca
2.09%
9.4 mb
45Ca
162.62 d
17.5 mb, β-
46Ca
0.004%
5.3 mb
47Ca
4.54 d
β-
42K
12.32 h
β-
43K
22.30 h
β-
44K
22.13 m
β-
45K
17.30 m
β-
46K
1.75 m
β-
41Ar
1.83 h
β-
42Ar
32.90 a
β-
43Ar
5.37 m
β-
44Ar
11.87 m
β-
45Ar
21.48 s
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Calcium