Abstract
The neutron-deficient isotope 246Fm , produced in the complete fusion reaction
40Ar$ + $208Pb
, was investigated. The main goal of the experiment was to determine the neutron multiplicity at spontaneous fission of this isotope. For experiments aimed at the study of spontaneous fission of transfermium nuclei improvements in the focal plane detector system of recoil separator VASSILISSA have been made. A neutron detector consisting of 54 3He -filled counters has been mounted around the focal-plane detector chamber. From the experimental data the average number of neutrons per spontaneous fission of 246Fm was determined (\( \bar{{\nu}}\) = 3.55±0.5) .
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References
E.K. Hulet, Sov. J. Nucl. Phys. 57, 1165 (1994)
J.P. Nix, Phys. Lett. B 30, 1 (1968)
H.W. Schmitt, U. Mosel, Nucl. Phys. A 186, 1 (1972)
D.C. Hoffman, in Proceedings of the International Symposium on Superheavy Elements, Lubboc, Texas, 1978 (Pergamon Press Inc., 1978) p. 89
D.C. Hoffman et al., Nucl. Phys. A 502, 21 (1989)
Yu.A. Lazarev et al., Phys. Lett. B 52, 321 (1974)
A.V. Yeremin et al., Phys. Part. Nucl. 35, 480 (2004)
O.N. Malyshev et al., Nucl. Instrum. Methods A 440, 86 (2000)
A.V. Yeremin et al., Phys. At. Nucl. 66, 1042 (2003)
A.V. Yeremin et al., Nucl. Instrum. Methods A 539, 441 (2005)
Yu.Ts. Oganessian et al., Nucl. Phys. A 239, 353 (1975)
J.M. Nitschke et al., Nucl. Phys. A 313, 236 (1979)
K.-H. Schmidt, Z. Phys. A 316, 19 (1984)
D.D. Bogdanov et al., Phys. Lett. B 113, 213 (1982)
D.C. Hoffman et al., Phys. Rev. C 22, 1581 (1980)
E.A. Sokol et al., Nucl. Instrum. Methods A 400, 96 (1997)
M. Dakowski et al., Nucl. Instrum. Methods 113, 195 (1973)
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Svirikhin, A.I., Dushin, V.N., Chelnokov, M.L. et al. Neutron multiplicity at spontaneous fission of 246Fm. Eur. Phys. J. A 44, 393–396 (2010). https://doi.org/10.1140/epja/i2010-10968-0
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DOI: https://doi.org/10.1140/epja/i2010-10968-0