Varlamov V.V., Peskov N.N.
M.V. Lomonosov Moscow State University,
D.V. Skobeltsyn Institute of Nuclear Physics (SINP),
Centre for Photonuclear Experiments Data, Russia
The detailed systematical analysis of the (γ,xn), (γ,sn), (γ,n), (γ,2n) и (γ,f) reaction cross section
data obtained by using quasimonoenergetic annihilation photon beams at Livermore (USA) and
Saclay (France) was carried out for 4 actinides nuclei 232Th, 238U, 237Np and 239Pu. For overcoming
of significant disagreements between the data and moving them into consistence the special
method proposed before for taking into account both laboratories neutron multiplicity sorting
procedure features was applied. The results of experiments obtained using bremsstrahlung were
also used. For all 4 nuclei the jointly corrected reaction cross sections were evaluated.
1. Handbook on photonuclear data applications – Cross sections and spectra. IAEA report, TECDOC-
1178, 2000.
2. Emmeric Dupont, Imante Raskinyte, Danas Ridikas. Photonuclear data evaluations of actinides up to
130 MeV. International Conference on Nuclear Data for Science and Technology, April 22 – 27, 2007,
Nice, France. Book of Summaries, p. 55 (#497).
3. V.V.Varlamov, N.N.Peskov, D.S.Rudenko, M.E.Stepanov. Soglasovannaja ocenka sechenij
fotonejtronnyh reakcij po dannym, poluchennym v jeksperimentah na puchkah
kvazimonojenergeticheskih annigiljacionnyh fotonov v Livermore (USA) i Saklje (France).
Voprosy atomnoj nauki i tehniki. Serija: Jadernye konstanty, No.1-2 (2003) 48.
IAEA Report, INDC(CCP)-440, 2004, p. 37.
4. V.V.Varlamov, N.G.Efimkin, B.S.Ishhanov, V.V.Sapunenko. Voprosy atomnoj nauki i tehniki.
Serija: Jadernye konstanty, No.1 (1993) 52.[in Russian]
5. B.L.Berman, R.E.Pywell, S.S.Dietrich, M.N.Thompson, K.G.McNeill, J.W.Jury. Phys.Rev., C36 (1987)
1286.
6. J.T.Caldwell, E.J.Dowdy, B.L.Berman, R.A.Alvarez, P.Meyer. Phys.Rev., C21 (1980) 1215.
7. A.Veyssiere, H.Beil, R.Bergere, P.Carlos, A.Lepretre, K.Kernbach . Nucl.Phys., A199 (1973) 45.
8. B.L.Berman, J.T.Caldwell, E.J.Dowdy, S.S.Dietrich, P.Meyer, R.A.Alvarez. Phys.Rev., C34 (1986)
2201.
9. G.M.Gurevich, L.E.Lazareva, V.M.Mazur, G.V.Solodukhov, B.A.Tulupov. Nucl.Phys., A273 (1976)
326.
10. J.T.Caldwell, E.J.Dowdy, R.A.Alvarez, B.L.Berman, P.Meyer. Nucl.Sci. and Eng., 73 (1980) 153.
11. V.V.Varlamov, N.N.Peskov. Evaluation of (γ,xn), (γ,sn), (γ,n), (γ,2n), and (γ,f) Reactions Cross Sections
for Actinides Nuclei 232Th, 238U, 237Np, and 239Pu: Consistency Between Data Obtained Using
Quasimonoenergetic Annihilation and Bremsstrahlung Photons. Preprint MSU SINP 2007-8/829.
