Thirteen
experimental datasets were found for the total photo-fission cross section in
the literature [183-195]. Data are shown in Fig. of "All data". Three dataset were excluded. The
reason of de-selection is indicated under the reference item. The selected data
are shown in Fig. "Selected"
in comparison with the Varlamov evaluation.
The data used in the statistical fitting procedure and their experimental
uncertainties together with the Padé fit (L=17, N=283,
c2=3.36) and the estimated uncertainty of the fit in
percentages, including 4% systematic uncertainty are shown in Fig. "Recommended"
Yields were
calculated from the recommended cross sections.
[183] Huizenga J.R., Clarke K.M., Gindler J.E., Vandenbosch R.,
Photofission cross sections of several nuclei with
mono-energetic gamma rays,
Nucl. Phys. 34
(1962) 439-456.
EXFOR: M0505
Deselected:
contradiction with the main trend of the other data
[184] Manfredini A., Muchnik M., Fiore
L., Ramorino C., De Carvalho
H.G., Lang J., Müller R.,
238U fission induced by low-energy monochromatic gamma rays: Cross sections
between 5 and 8 MeV,
Nucl. Phys. 74
(1965) 377-384.
EXFOR: M0535
Manfredini A., Muchnik
M., Fiore L., Ramorino C., De Carvalho
H.G., Bösch R., Wölfli W.,
Results on the cross section of 238U
fission induced by low energy mono-energetic gamma rays,
Nuovo Cimento B44 (1966) 218-221.
EXFOR: L0093
Deselected:
contradiction with the main trend of the other data
[185] Khan
A.M., Knowles J.W.,
Photofission of 232Th, 238U
and 235U near threshold using a variable energy beam of γ rays,
Nucl. Phys. A179
(1972) 333-352.
EXFOR: M0504
[186] Mafra O.Y., Kuniyoshi S., Goldemberg J.,
Intermediate structure in the photoneutron and photofission
cross sections in 238U and 232Th,
Nucl. Phys. A186
(1972) 110-126.
EXFOR: M0433
Deselected:
contradiction with the main trend of the other data
[187] Bergere R., Beil H., Carlos B., Veyssiere A., Lepretre A.,
Study of the giant resonance of fissile
nuclei,
Conf.
Nuclear Structure Studies, Sendai, Japan (1972) 273-
EXFOR: L0082
[188] Anderl R.A., Hall J.E., Morrison R.C., Struss
R.G., Yester M.V., Zaffarano D.J.,
Compton scattered neutron capture gamma
rays for photofission studies,
Nucl. Instrum. Methods
102 (1972) 101-108.
EXFOR: L0092
Anderl R.A., Yester M.V., Morrison R.C.,
Photofission Cross Sections of 238U and 235U
from 5.0 MeV to 8.0 MeV,
Nucl. Phys. A212
(1973) 221-240.
EXFOR: M0431
[189] Veyssiere A., Beil H., Bergere R., Carlos P., Lepretre A., A study of the photo-fission and photo-neutron processes in the giant dipole resonance of 232Th, 238U and 237Np, Nucl. Phys. A199 (1973) 45-64.
EXFOR: L0031
[190]
Dickey P.A., Axel P.,
238U and 232Th photofission and photoneutron emission near threshold,
Phys.
Rev. Lett. 35 (1975) 501-504.
EXFOR: L0081
[191]
Caldwell J.T., Dowdy E.J., Alvarez R.A., Berman B.L., Meyer P.,
Experimental determination of
photo-fission neutron multiplicities for 235U, 236U, 238U,
and 232Th using monoenergetic photons,
Nucl. Sci. Eng. 73
(1980) 153-163.
EXFOR: L0185
Deselected
above 10 MeV: contradiction with the main trend of the other data
[192] Ries H., Mank G., Drexler J., Heil R., Huber K., Kneissl U., Ratzek R., Stroher H.,
Weber
T., Wilke W.,
Absolute photofission
cross sections for 235,238U in the energy range 11.5–30 MeV,
Phys.
Rev. C29 (1984) 2346-2348.
EXFOR: M0503
Deselected
above 10 MeV: contradiction with the main trend of the other data
[193] Lepretre A., Bergere R.,
Bourgeois P., Carlos P., Fagot J., Fallou J.L., Garganne P., Veyssiere A.,
Ries H., Goble R., Kneissl U., Mank G., Stroher H., Wilke W., Ryckbosch D., Jury J.,
Absolute photofission
cross sections for 232Th and 235,238U measured with
monochromatic tagged photons (20 MeV < Eγ<
110 MeV), Nucl. Phys. A472 (1987) 533-557.
EXFOR: M0491
[194] Csige L., Filipescu D.M., Glodariu T., Gulyas J., Gunther M.M., Habs D., Karwowski H.J., Krasznahorkay A.,
Rich G.C., Sin M., Stroe L., Tesileanu
O., Thirolf P.G.,
Exploring the multi-humped fission
barrier of 238U via sub-barrier photofission,
Phys.
Rev. C87 (2013) 044321.
EXFOR: L0179
[195] Dzhilavyan L.Z., Nedorezov V.G.,
Photofission of 238U in the
giant-resonance region,
Physics
of Atomic Nuclei 76 (2013) 1444-1451.
EXFOR: M0870