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)
42Ca 43Ca




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.012.8 ± 1.6--
0.015.6 ± 2.0--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is average from evaluated libraries using 13% uncertainty quoted in MAB77b.
Last review: May 2016
List of all available values
originalrenorm.yeartypeCommentRef
15.6 ± 2.0
1977c,2Linac, TOF, 6Li, Au:Sat.MAB77b
13.1
2015tTENDL-2015 using the TALYS codetendl15
12.4
2011eENDF/B-VII.1endfb71
12.4
2012eJEFF-3.1jeff32
12.4
2011eJENDL-4.0jendl40
12.4
2005tJEFF-3.0/Ajeff30A
34.1
2005tMOST 2005Gor05
38.7
2002tMOST 2002Gor02
16.7
2000tNON-SMOKERRaT99
12
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
tTheoretical value
eEvaluated value taken directly from the reference
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
29.2
-
24.0
19.5
16.5
14.4
12.8 ± 1.6
10.7
9.4
8.7
7.8
7.4
Xfactor1.001.001.001.001.001.001.001.001.001.001.001.00
SEF1.001.001.001.001.001.001.001.001.001.001.001.00
Rate
1.75
-
2.03
2.02
1.97
1.93
1.88
1.81
1.78
1.80
1.87
1.98

MACS:
Reference: endfb71,tendl15
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 106 cm3/mole/s, including SEF
Chart of nuclei
up
left
42Ti
199.00 ms
β+
43Ti
509.00 ms
β+
44Ti
59.99 a
β+
45Ti
3.08 h
β+
46Ti
8.25
26.8 mb
41Sc
596.00 ms
β+
42Sc
681.00 ms
β+
43Sc
3.89 h
β+
44Sc
3.97 h
β+
45Sc
100
69 mb
40Ca
96.94
6.7 mb
41Ca
102.01 ka
30 mb, β+
42Ca
0.647
15.6 mb
43Ca
0.135
51 mb
44Ca
2.09
9.4 mb
39K
93.2581
11.8 mb
40K
1.25x109 y
31 mb, β-
41K
6.7302
22 mb
42K
12.32 h
β-
43K
22.30 h
β-
38Ar
0.0632
3 mb
39Ar
269.01 a
8 mb, β-
40Ar
99.6003
2.6 mb
41Ar
1.83 h
β-
42Ar
32.90 a
β-
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Style: (S, M, L, XL or Alberto)


Isotope: Calcium