Publications
with experimental cross-section data were identified in the literature for
incident particle energies up to 25 MeV and are
represented with uncertainties in Fig. All data. No new datasets were
added after the previous update. The large number of data
presented by Bair et al. (1964) are relative measurements and were normalised to the absolute values published in Bair (1973)
and corrected by 1.35 according to recommendations in another article of Bair
et al. (1981). The values of Anderson et al. (1969) are summed partial cross
sections and are multiplied by 1.2 as proposed by Bair et al. (1981). No EXFOR entries exist for Mazitov
et al. (1971) and Fritsch et al. (1973). The results of 3 studies were
rejected, and the reasons for their removal are indicated: The remaining eight
datasets were considered as input for a least-squares Pade fit. For energy below 4 MeV
only the data points of Bair (1973) were retained. The single point of Amsel (1967) cannot be checked and the data of Hess et al.
(2001), Bair et al. (1964), Ruth and Wolf (1979) have lower energy resolution
in this domain and hinder a good fitting. On the other hand data from Bair
(1973) and of Blaser et al. (1952) were not
considered for fitting above 4 MeV. The Pade functions with 98 parameters were fitted to 534
selected data points with a χ2=4.6 and covering the energy range up to 30 MeV as shown in Fig. Recommended. The uncertainties
(including a 4% systematic uncertainty) and averaged over the resonances, range
between 25% near the reaction threshold, decrease to below 6% between 3.5 and
11 MeV and increase slowly to about 20% at the
highest energy. This reaction on a light target shows still fluctuations above
9 MeV. Therefore, the relatively smooth Pade function probably underestimates the evaluated
uncertainty above 9 MeV.
Sindano wa Kitwanga,
P. Leleux and P. Lipnik,
“Production
of 14,15O, 18F and 19Ne radioactive nuclei
from (p,n) reactions up to
30 MeV,”
Phys.
Rev. C42, 748 (1990);
EXFOR O0916.
G. Amsel and
D. Samuel,
“Microanalysis
of the stable isotopes of oxygen by means of nuclear reactions,”
J.
Anal. Chem. 39, 1689–1698 (1967);
EXFOR D0104.
J. D. Anderson, S. D. Bloom, C. Wong, W.
F. Hornyak, V. A. Madsen,
“Effective
two-body force inferred from the (p,n)
reaction on 17O, 18O, 27Al and other light
nuclei,”
Phys.
Rev. 177, 1416 (1969);
EXFOR C1016.
J. K. Bair, C. M. Jones, H. B. Willard,
“Neutrons
from the Proton Bombardment of 6Li, 7Li, 9Be, 11B
and 18O,”
Nucl. Phys. 53, 209 (1964);
EXFOR A1366.
J. K. Bair,
“Total
neutron yields from the proton bombardment of 17,18O,”
Phys.
Rev. C8, 120 (1973);
EXFOR C1010.
J. K. Bair, P. D. Miller
, B. W. Wieland,
“Neutron
yields from the 4-12 MeV proton bombardment of 11B,
13C and 18O as related to the production of 11C,
13N and 18F,”
Int.
J. Appl. Radiat. Isot. 32, 389 (1981);
EXFOR none.
* J. M. Blair and J. J. Leigh,
“Total
Cross Sections of the 18O(p,α)15N and 18O(p,n)18F Reactions ,
”
Phys. Rev. 118, 495 (1960);
EXFOR O0454.
Remark:
Only data points lower than 3 MeV, have resonance
structure, are lower than Bair et al. 1973, has energy
gaps,
seem
energy shifted.
J.-P. Blaser,
F. M. Boehm, P. Marmier, P. Scherrer,
“Fonction d’excitation de la
reaction (p,n) (III)
elements legers,”
Helv. Phys. Acta 24, 465 (1952);
EXFOR D0095.
* W. Fritsch, K. D. Buchs,
E. Finck, P. Pietrzyk, B. Scheiber,
“Investigation
of two resonances in the 18O(p,n)18F reaction,”
Z.
Phys. 262, 65 (1973);
EXFOR none.
Remark:
energy shifted
E. Hess, S. Takacs, B. Scholten,
F. Tarkanyi, H. H. Coenen,
S. M. Qaim,
“Excitation
function of the 18O(p,n)18F
nuclear reaction from threshold up to 30 MeV,”
Radioch. Acta 89, 357–362 (2001),
EXFOR
D4095.
* B. S. Mazitov,
V. A. Muminov, S. Mukhamedov,
“Activation
cross sections for the reactions 18O(p,n)18F
and 47,48Ti(p,n)47,48V from
threshold to 18 MeV,”
Dokl. Akad. Nauk. Uzbek. SSR 5, 21 (1971);
EXFOR
none.
Remarks:
All data points are too low.
T. J. Ruth and A. P. Wolf,
“Absolute
cross sections for the production of 18F via 18O(p,n)18F reaction,
”Radioch. Acta 26, 21 (1979);
EXFOR
A0235.
Yield
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