Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
[Standards]   [Logbook]   [FAQ]   [Links]   [Contact]
p-process
Available isotopes for Vanadium (Z=23)
  49V   50V   51V
Go to isotope
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
50V 51V




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.032 ± 11--
0.050 ± 9*--

(Version 0.0 corresponds to Bao et al.)
Comment
Rec. value average from recent evaluations (endfb71,jendl40,jeff30A,tendl15). Uncertainty is deviation between evaluations. Data from v50 fits evaluations reasonably well, however, a remeasurement is desired.
Last review: February 2013
List of all available values
originalrenorm.yeartypeCommentRef
48 - 7
E(n)= 10.5 - 55 keV
1965eRetrieved via EXFORv50
43.1
2015eTENDL-2015 using the TALYS codetendl15
21.34
2011eENDF/B-VII.1endfb71
21.34
2011eJENDL-4.0jendl40
32.0
2005tJEFF-3.0/Ajeff30A
88.0
2005tMOST 2005Gor05
85.4
2002tMOST 2002Gor02
52
2000tNON-SMOKERRaT99
49
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:
eEvaluated value taken directly from the reference
tTheoretical value
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
221 ± 163
-
101 ± 74
65 ± 42
48 ± 26
38 ± 17
32 ± 11
25 ± 8
21 ± 6
18 ± 5
14 ± 6
12 ± 6
Xfactor1.001.001.001.001.001.001.001.000.990.980.940.89
SEF1.001.001.001.001.001.001.001.001.001.000.990.99
Rate
1.32
-
0.85
0.67
0.57
0.51
0.47
0.42
0.40
0.37
0.33
0.32

MACS:
Reference: v50,endfb71,jendl40,jeff30A,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 107 cm3/mole/s, including SEF
Chart of nuclei
up
left
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-
46Sc
83.79 d
β-
47Sc
3.35 d
β-
48Sc
1.82 d
β-
49Sc
57.20 m
β-
50Sc
1.71 m
β-
right
down
Style: (S, M, L, XL or Alberto)


Isotope: Vanadium