| s-process | p-process |
Available isotopes for Xenon (Z=54)
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
126Xe 
127Xe
127Xe
| Total MACS at 30keV: | 365 | ± | 52 | mb |
| Partial c.s. to isomer: | 40.2 | ± | 5.9 | mb |
Cross sections do not include stellar enhancement factors!
History
| Version | Total MACS [mb] | Partial to gs [mb] | Partial to isomer [mb] |
|---|---|---|---|
| 1.0 | 365 ± 52 | - | 40.2 ± 5.9 |
| 0.0 | 359 ± 51 | - | 40 ± 6 |
(Version 0.0 corresponds to Bao et al.)
Comment
New rec. value is normalized value (f=0.60) from average of evaluated libraries (endfb71,jendl40). Uncertainty at kT= 25 keV is from Bee91, otherwise from deviation of both recent evaluations. The isomeric ratio at kT= 25 keV is IR=0.11 (Bee91), assumed same ratio for kT= 30 keV.
Last review: July 2013
Last review: July 2013
List of all available values
| original | renorm. | year | type | Comment | Ref |
393 ± 56kT= 25 keV | 365 ± 52 | 1991 | c | VdG, Act., 1/v(kT), Au:RaK88; en. dep. from endfb71,jendl40 | Bee91 |
673.0 | 2011 | e | ENDF/B-VII.1 | endfb71 | |
548.6 | 2011 | e | JENDL-4.0 | jendl40 | |
272.7 | 2004 | e | JEFF-3.1 | jeff31 | |
685.2 | 2002 | e | JENDL-3.3 | jendl33 | |
800 | 1971 | s | AGM71 | ||
333 | 2005 | t | MOST 2005 | Gor05 | |
469 | 2002 | t | MOST 2002 | Gor02 | |
439 | 2000 | t | NON-SMOKER | RaT99 | |
1050 | 1981 | t | Har81 | ||
324 | 1976 | t | HWF76 | ||
| Partial cross section to 127mXe: | |||||
44.0 ± 6.5kT= 25 keV | 1991 | c | VdG, Act., 1/v(kT), Au:RaK88 | Bee91 | |
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:
| c | Directly quoted from the reference itself |
| e | Evaluated value taken directly from the reference |
| s | Semiempirical estimates given in the reference |
| t | Theoretical value |
MACS, SEF and Reaction Rates for different energies
| Energy | 5keV | 8keV | 10keV | 15keV | 20keV | 25keV | 30keV | 40keV | 50keV | 60keV | 80keV | 100keV |
| MACS | 705 ± 257 | - | 566 ± 175 | 484 ± 123 | 431 ± 85 | 393 ± 56 | 365 ± 59 | 325 ± 65 | 299 ± 71 | 280 ± 77 | 255 ± 90 | 238 ± 102 |
| Xfactor | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.99 | 0.94 | 0.86 |
| SEF | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.01 | 1.02 | 1.05 |
| Rate | 4.19 | - | 4.75 | 4.98 | 5.12 | 5.22 | 5.31 | 5.46 | 5.62 | 5.79 | 6.20 | 6.65 |
MACS:
Reference: endfb71,jendl40,Bee91
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: 2013
X-factor:
Reference:
Year:
SEF (Stellar enhancement factor):
Reference:
Year:
Comment:
Rate:
Reaction rate NA<σv> given in 107 cm3/mole/s, including SEF
Chart of nuclei
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Isotope: Xenon