Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Chromium (Z=24)
  50Cr   51Cr   52Cr   53Cr   54Cr
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
51Cr 52Cr




Cross sections do not include stellar enhancement factors!
* only theoretical data available
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
0.087 ± 16*--

(Version 0.0 corresponds to Bao et al.)
Comment
Last review: 1999
List of all available values
originalrenorm.yeartypeCommentRef
90
2000tRaT99
63
1978tWFH78
161
2002tMOST 2002Gor02
146
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
438
206
146
117
99
87 ± 16
72
62
55
46
40
SEF1.001.001.001.001.001.001.001.001.001.001.00
Rate
2.62
1.74
1.51
1.40
1.32
1.27
1.22
1.17
1.14
1.10
1.07

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 107 cm3/mole/s, including SEF
Isotopic mass chain
Isotopic Mass Chain
Chart of nuclei
up
left
51Fe
305.00 ms
β+
52Fe
8.28 h
β+
53Fe
8.51 m
β+
54Fe
5.845%
27.6 mb
55Fe
2.74 a
75 mb, β+
50Mn
283.00 ms
β+
51Mn
46.20 m
β+
52Mn
5.59 d
β+
53Mn
3.74 Ma
β+
54Mn
312.15 d
β+
49Cr
42.30 m
β+
50Cr
4.345%
49 mb
51Cr
27.70 d
87 mb, β+
52Cr
83.789%
8.8 mb
53Cr
9.501%
58 mb
48V
15.97 d
β+
49V
329.05 d
β+
50V
0.25%
50 mb
51V
99.75%
38 mb
52V
3.74 m
β-
47Ti
7.44%
64.4 mb
48Ti
73.72%
31.8 mb
49Ti
5.41%
22.1 mb
50Ti
5.18%
3.6 mb
51Ti
5.76 m
β-
right
down
Style: (Size: S, M, L, XL, Alberto; No-Macs: nox)


Isotope: Chromium