| s-process | p-process |
Available isotopes for Titanium (Z=22)
Recommended MACS30 (Maxwellian Averaged Cross Section @ 30keV)
50Ti 
51Ti
51Ti
| Total MACS at 30keV: | 3.8 | ± | 0.4 | mb |
Cross sections do not include stellar enhancement factors!
History
| Version | Total MACS [mb] | Partial to gs [mb] | Partial to isomer [mb] |
|---|---|---|---|
| 1.0 | 3.8 ± 0.4 | - | - |
| 0.0 | 3.6 ± 0.4 | - | - |
(Version 0.0 corresponds to Bao et al.)
Comment
Rec. value is from SMB99, normalized by f= 1.054 at kT= 25 keV and by f=1.056 at kT= 52 keV. Note the good agreement between this activation measurement and the TOF measurement of ABM77, and the recent TENDL evaluation. The JEFF evaluation uses again a higher thermal cross section than all other evaluations (as in 49Ti).
Last review: March 2015
Last review: March 2015
List of all available values
| original | renorm. | year | type | Comment | Ref |
3.61 ± 0.10kT= 25 keV | 3.77 ± 0.42 | 1999,2015 | c | VdG, Act., Au:RaK88, Mac82e corrected at kT= 25 keV by 683/648= 1.054 | SMB99 |
2.74 ± 0.11kT= 52 keV | 2.89 ± 0.12 | 1999,2015 | c | VdG, Act., Au:RaK88,Mac82e corrected at kT= 25 keV by 455/431= 1.056 | SMB99 |
3.9 ± 0.5 | 1977 | r | Linac, TOF, 6Li, Au:Sat., k=1.000 Recalcul. including data of MDH81 | ABM77 | |
4.0 ± 0.5 | 1977 | c,2 | Linac, TOF, 6Li, Au:Sat., k=1.000 | ABM77 | |
3.4 | 2015 | e | TENDL-2015 using the TALYS code | tendl15 | |
23.8 | 2014 | e | JEFF-3.2; different thermal xs | jeff32 | |
3.1 | 2011 | e | ENDF/B-VII.1 | endfb71 | |
3.1 | 2011 | e | JENDL-4.0 | jendl40 | |
3.1 | 2006 | e | ENDF/B-VII.0 | endfb7 | |
3.1 | 2002 | e | JENDL-3.3 | jendl33 | |
2.0 | 1971 | e | AGM71 | ||
5.56 | 2005 | t | MOST 2005 | Gor05 | |
5.86 | 2002 | t | MOST 2002 | Gor02 | |
3.3 | 2000 | t | NON-SMOKER | RaT99 | |
2.7 | 1978 | t | WFH78 |
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 |
| r | Recalculated for kT = 30keV with the code described in Ref. 2 after renormalizing the original data to updated standard cross sections |
| 2 | Including k from Ref. ABM82, where k is a correction factor which has been applied to the originally reported cross section |
| e | Evaluated value taken directly from 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 | 2.1 ± 0.1 | 2.4 ± 0.2 | 2.4 ± 0.2 | 2.8 ± 0.3 | 3.3 ± 0.4 | 3.6 ± 0.4 | 3.8 ± 0.4 | 3.7 ± 0.4 | 3.4 ± 0.4 | 3.1 ± 0.4 | 2.5 ± 0.3 | 2.1 ± 0.2 |
| Xfactor | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| SEF | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Rate | 1.25 | 1.81 | 2.03 | 2.90 | 3.94 | 4.81 | 5.56 | 6.25 | 6.42 | 6.41 | 5.97 | 5.61 |
MACS:
Reference: SMB99
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: 1999
X-factor:
Reference:
Year:
SEF (Stellar enhancement factor):
Reference:
Year:
Comment:
Rate:
Reaction rate NA<σv> given in 105 cm3/mole/s, including SEF
Chart of nuclei
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Isotope: Titanium