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)
41Ca 42Ca




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.030 ± 7*--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
35
2000tRaT99
15
1978tWFH78
118
2002tMOST 2002Gor02
101
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
111
65
49
40
34
30 ± 7
24
21
18
15
13
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
6.64
5.50
5.08
4.79
4.55
4.40
4.06
3.97
3.73
3.59
3.48

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
41Ti
80.40 ms
β+
42Ti
199.00 ms
β+
43Ti
509.00 ms
β+
44Ti
59.99 a
β+
45Ti
3.08 h
β+
40Sc
182.00 ms
β+
41Sc
596.00 ms
β+
42Sc
681.00 ms
β+
43Sc
3.89 h
β+
44Sc
3.97 h
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
43Ca
0.135%
51 mb
38K
7.64 m
β+
39K
93.2581%
11.8 mb
40K
1.25x109 y
31 mb, β-
41K
6.7302%
22 mb
42K
12.32 h
β-
37Ar
34.95 d
β+
38Ar
0.0632%
3 mb
39Ar
269.01 a
8 mb, β-
40Ar
99.6003%
2.6 mb
41Ar
1.83 h
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Calcium