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)
52Cr 53Cr




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.08.8 ± 2.3--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
8.79 ± 2.30
1989rLinac, TOF, 10B,6Li; Ag:Sat.RSB89
9.8 ± 2.3
1977c,2Linac,TOF,6Li, Au+Ti:Sat., k=1.0737KAM77b
8.3 ± 3.0
1975cVdG, TOF, Au:596mb Kom69BSE74,BeS75
3.8 ± 1.0
1971eAGM71
8.66
2006eendfb7
8.98
2004ejeff31
8.60
2002ejendl33
17
2000tRaT99
12
1978tWFH78
22.6
2002tMOST 2002Gor02
21.1
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
10.3
8.9
9.1
9.1
8.9
8.8 ± 2.3
8.5
8.1
7.8
7.1
6.6
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
6.15
7.51
9.41
10.87
11.88
12.87
14.35
15.29
16.13
16.95
17.62

MACS:
Reference: RSB89
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: 1989

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

Rate:
Reaction rate NA<σv> given in 105 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
52Fe
8.28 h
β+
53Fe
8.51 m
β+
54Fe
5.845%
27.6 mb
55Fe
2.74 a
75 mb, β+
56Fe
91.754%
11.7 mb
51Mn
46.20 m
β+
52Mn
5.59 d
β+
53Mn
3.74 Ma
β+
54Mn
312.15 d
β+
55Mn
100%
39.6 mb
50Cr
4.345%
49 mb
51Cr
27.70 d
87 mb, β+
52Cr
83.789%
8.8 mb
53Cr
9.501%
58 mb
54Cr
2.365%
6.7 mb
49V
329.05 d
β+
50V
0.25%
50 mb
51V
99.75%
38 mb
52V
3.74 m
β-
53V
1.60 m
β-
48Ti
73.72%
31.8 mb
49Ti
5.41%
22.1 mb
50Ti
5.18%
3.6 mb
51Ti
5.76 m
β-
52Ti
1.70 m
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Chromium