Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Calcium (Z=20)
  40Ca   41Ca   42Ca   43Ca   44Ca   45Ca   46Ca   47Ca   48Ca
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
46Ca 47Ca




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.05.68 ± 0.50--
0.05.3 ± 0.5--

(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is weighted average from MSB99 (normalized by 632/586= 1.0785) and KWM85 (normalized by 683/657= 1.04). Used uncertainty of 8.8% from KWM85. Corrected typos in previous versions for kT= 8-20 keV.
Last review: May 2016
List of all available values
originalrenorm.yeartypeCommentRef
4.90 ± 0.61
5.28 ± 0.661999cVdG, Act., Au:RaK88,Mac82e corrected by 632/586= 1.0785 MSB99
2.3 ± 0.3
1993cF.N.B., Act., 10BMur93
5.7 ± 0.5
5.93 ± 0.521985,2015cVdG, Act., 1/v(kT), Au: corrected by 683/657= 1.04KWM85
6.3
2015eTENDL-2015 using the TALYS codetendl15
5.5
2005eJEFF-3.0/Ajeff30A
1.86
2011eENDF/B-VII.1endfb71
1.86
2014eJEFF-3.2jeff32
2.59
2011eJENDL-4.0jendl40
0.945
2002eJENDL-3.3jendl33
3.72
2005tMOST 2005Gor05
3.90
2002tMOST 2002Gor02
3.1
2000tNON-SMOKERRaT99
3.7
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
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
7.68
8.99
9.22
8.58
7.49
6.49
5.68 ± 0.50
4.52
3.76
3.23
2.57
2.17
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
4.59
6.80
7.79
8.88
8.95
8.67
8.32
7.64
7.11
6.69
6.14
5.80

MACS:
Reference: MSB99,KWM85
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: 1999,2016

X-factor:
Reference: Rau12
Year: 2012

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

Rate:
Reaction rate NA<σv> given in 105 cm3/mole/s, including SEF
Chart of nuclei
up
left
46Ti
8.25
26.8 mb
47Ti
7.44
64.4 mb
48Ti
73.72
31.8 mb
49Ti
5.41
22.1 mb
50Ti
5.18
3.6 mb
45Sc
100
69 mb
46Sc
83.79 d
β-
47Sc
3.35 d
β-
48Sc
1.82 d
β-
49Sc
57.20 m
β-
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-
48Ca
0.187
0.87 mb
43K
22.30 h
β-
44K
22.13 m
β-
45K
17.30 m
β-
46K
1.75 m
β-
47K
17.50 s
β-
42Ar
32.90 a
β-
43Ar
5.37 m
β-
44Ar
11.87 m
β-
45Ar
21.48 s
β-
46Ar
8.40 s
β-
right
down
Style: (S, M, L, XL or Alberto)


Isotope: Calcium