Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Chromium (Z=24)
  50Cr   51Cr   52Cr   53Cr   54Cr
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
50Cr 51Cr




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.049 ± 13--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
48.5 ± 13.0
1977rLinac, TOF, 6Li, Au+Ti:Sat., k=1.0737 Recalcul. including data of MDH81KAM77b
52 ± 13
1977c,2Linac, TOF, 6Li, Au+Ti:Sat., k=1.0737KAM77b
50 ± 15
1975cVdG, TOF, Au:596mb Kom69BSE74,BeS75
31 ± 4
1971eAGM71
37.82
2006eendfb7
37.82
2004ejeff31
36.99
2002ejendl33
49
2000tRaT99
34
1978tWFH78
108
2002tMOST 2002Gor02
63.0
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:
rRecalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections
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
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
229
125
87
68
57
49 ± 13
39
33
29
23
19
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
1.37
1.06
0.90
0.81
0.76
0.72
0.66
0.62
0.60
0.55
0.51

MACS:
Reference: KAM77b
Procedure: 'e' (The Maxwellian-averaged cross sections (MACS) from kT=5 keV to 100 keV are obtained from experimental data; the relative uncertainties are similar to those quoted for the 30 keV data.)
Year: 1977

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

Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
50Fe
155.00 ms
β+
51Fe
305.00 ms
β+
52Fe
8.28 h
β+
53Fe
8.51 m
β+
54Fe
5.845%
27.6 mb
49Mn
382.00 ms
β+
50Mn
283.00 ms
β+
51Mn
46.20 m
β+
52Mn
5.59 d
β+
53Mn
3.74 Ma
β+
48Cr
21.56 h
β+
49Cr
42.30 m
β+
50Cr
4.345%
49 mb
51Cr
27.70 d
87 mb, β+
52Cr
83.789%
8.8 mb
47V
32.60 m
β+
48V
15.97 d
β+
49V
329.05 d
β+
50V
0.25%
50 mb
51V
99.75%
38 mb
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
right
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Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Chromium