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001-es BibID:	BIBFORM011162
Első szerző:	Nagy Sándor
Cím:	Semiempirical description of the mass distribution for the /sup 238/U (n,f) process in the 1. 5- to 15-MeV energy interval / Nagy Sándor, Daróczy Sándor, Raics Péter, Boda István Károly, Matajsz I.
Dátum:	1984
Megjegyzések:	Different empirical and semiempirical systematics have been developed to predict unmeasured fission product yields. One of these methods, originally proposed by Musgrove et al. and developed by Cook et al., is used to describe the energy dependence of the mass distribution in neutron-induced fission of /sup 238/U utilizing published yield data. The available measured cumulative yields of fission products are collected for monoenergetic /sup 238/U(n,f) processes. The mass distributions at approximate neutron energies of 1.5, 2.0, 3.0, 3.9, 5.2, 6.0, 7.0, 7.9, 9.0, and 14.7 MeV are fitted by the sum of five Gaussian functions. The energy dependence of the parameters of the Gaussian functions can also be described by semiempirical formulas. The 2sigma error of the mass yields calculated by the fitted parameters can be estimated to be about 10% in the peak regions and 20% in the valley region for the above neutron energies. The formulas with the given parameters can be useful in estimating unmeasured /sup 238/U fission product yields for any monoenergetic and nonmonoenergetic neutron irradiations in the range of 1.5 to 15 MeV. The method has been tested in a study of the /sup 238/U fission by neutrons having a Watt spectrum produced in the thermal fission of /sup 235/U.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Nuclear Science and Engineering. - 88 : 2 (1984), p. 154-163. -
További szerzők:	Daróczy Sándor (fizikus) Raics Péter (1944-) (fizikus) Boda István Károly (1958-) (könyvtáros, informatikus) Matajsz I.
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