Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
s-process
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p-process
Available isotopes for Phosphorus (Z=15)
  31P   32P   33P
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Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
31P 32P




Cross sections do not include stellar enhancement factors!
History
VersionTotal MACS [mb]Partial to gs [mb]Partial to isomer [mb]
1.01.87 ± 0.23--
0.01.74 ± 0.09--

(Version 0.0 corresponds to Bao et al.)
Comment
Rec. value is average from evaluations (jendl40,jeff32), based on the only experiment available (MaM85). The given uncertainty corresponds to the difference between both evaluations. A remeasurement is desired.
Last review: April 2016
List of all available values
originalrenorm.yeartypeCommentRef
1.74 ± 0.09
1985cLinac, TOF, 6Li+235U:B-V; Au:Sat.MaM85
2.10
2015tTENDL-2015 using the TALYS codetendl15
2.10
2014eJEFF-3.2 based on TENDL-2012jeff32
7.22
2011eENDF/B-VII.1; strange shape (calculations?)endfb71
1.63
2011eJENDL-4.0jendl40
1.63
2004eJEFF-3.1jeff31
7 ± 1
1971eAGM71
39.2
2005tMOST 2005Gor05
42.3
2002tMOST 2002Gor02
11.15
2000tNON-SMOKERRaT99
7.9
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
tTheoretical value
eEvaluated value taken directly from the reference
MACS, SEF and Reaction Rates for different energies
Energy5keV8keV10keV15keV20keV25keV30keV40keV50keV60keV80keV100keV
MACS
0.56 ± 0.15
-
1.53 ± 0.50
1.71 ± 0.51
1.74 ± 0.41
1.79 ± 0.31
1.87 ± 0.23
1.99 ± 0.14
2.04 ± 0.13
2.04 ± 0.13
1.94 ± 0.17
1.81 ± 0.19
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
3.36
-
13.00
17.79
20.91
24.05
27.52
33.82
38.76
42.46
46.62
48.63

MACS:
Reference: jendl40,jeff32
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 104 cm3/mole/s, including SEF
Chart of nuclei
up
left
31Cl
150.00 ms
β+
32Cl
298.00 ms
β+
33Cl
2.51 s
β+
34Cl
1.53 s
β+
35Cl
75.77
10 mb
30S
1.18 s
β+
31S
2.57 s
β+
32S
95.02
4.1 mb
33S
0.75
7.4 mb
34S
4.21
0.226 mb
29P
4.14 s
β+
30P
2.50 m
β+
31P
100
1.74 mb
32P
14.26 d
β-
33P
25.34 d
β-
28Si
92.23
2.9 mb
29Si
4.683
7.9 mb
30Si
3.087
6.5 mb
31Si
2.62 h
β-
32Si
132.02 a
β-
27Al
100
3.74 mb
28Al
2.24 m
β-
29Al
6.56 m
β-
30Al
3.60 s
β-
31Al
644.00 ms
β-
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Isotope: Phosphorus