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Article
Title	Measurement of cross-sections of yttrium (n,xn) threshold reactions by means of gamma spectroscopy
Author(s)	Chudoba, Petr (Rez, Nucl. Phys. Inst. ; Charles U.) ; Kilim, S (NCBJ, Swierk) ; Wagner, V (Rez, Nucl. Phys. Inst.) ; Vrzalova, J (Rez, Nucl. Phys. Inst. ; Prague, Tech. U.) ; Svoboda, O (Rez, Nucl. Phys. Inst.) ; Majerle, M (Rez, Nucl. Phys. Inst.) ; Stefanik, M (Rez, Nucl. Phys. Inst.) ; Suchopar, M (Rez, Nucl. Phys. Inst. ; Prague, Tech. U.) ; Kugler, A (Rez, Nucl. Phys. Inst.) ; Bielewicz, M (NCBJ, Swierk) ; Strugalska-Gola, E (NCBJ, Swierk) ; Szuta, M (NCBJ, Swierk) ; Hervas, D (Rez, Nucl. Phys. Inst.) ; Herman, T (Rez, Nucl. Phys. Inst.) ; Geier, B (Rez, Nucl. Phys. Inst.)
Publication	2014
In:	European Research Infrastructures for Nuclear Data Applications (ERINDA) workshop, CERN, Geneva, Switzerland, 1 - 3 Oct 2013, pp.53-57
Subject category	Nuclear Physics - Experiment
Abstract	Neutron activation and gamma spectrometry are usable also f or the determination of cross-sections of different neutron reactions. We have studied the cross-sections of yttrium (n, x n) threshold reactions using quasi-monoenergetic neutron source based on the reaction on 7 Li target at Nuclear Physics Institute of ASCR in Rez. Yttrium (n, x n) threshold reactions are suitable candidates for fast neutron field measurement by activation detectors. Fast neutron field monitoring is necessary already today at a wide range of accelerator facilities and will gain on importance in future fast reactors of generation IV, accelerator transmutation systems or fusion reactors. The knowledge of the cross-sections is crucial for such purpose. Unfortunately, the cross-section is sufficiently known only for 89 Y(n,2n) 88 Y reaction. For higher orders of reactions there are almost no experimental data. Special attention was paid to t he 89 Y(n,3n) 87 Y reaction. The cross-sections of both 89 Y(n,2n) 88 Y and 89 Y(n,3n) 87 Y reactions were analyzed.
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