Examination of the surrogate ratio method for the determination of the
Zr(n,
)
Zr cross section with
Zr(
O,
O)
Zr reactions
Zr(
O,
O)
Zr反応による
Zr(n,
)
Zr断面積の代理的決定法の検証
Yan, S. Q.*; Li, Z. H.*; Wang, Y. B.*; 西尾 勝久
; 牧井 宏之
; Su, J.*; Li, Y. J.*; 西中 一朗; 廣瀬 健太郎
; Han, Y. L.*; Orlandi, R.
; Shen, Y. P.*; Guo, B.*; Zeng, S.*; Lian, G.*; Chen, Y. S.*; Bai, X. X.*; Qiao, L. H.*; Liu, W. P.*
Yan, S. Q.*; Li, Z. H.*; Wang, Y. B.*; Nishio, Katsuhisa; Makii, Hiroyuki; Su, J.*; Li, Y. J.*; Nishinaka, Ichiro; Hirose, Kentaro; Han, Y. L.*; Orlandi, R.; Shen, Y. P.*; Guo, B.*; Zeng, S.*; Lian, G.*; Chen, Y. S.*; Bai, X. X.*; Qiao, L. H.*; Liu, W. P.*
The relative
-decay probability ratios of the neutron resonance states in
Zr and
Zr populated via two neutron transfer reactions,
Zr(
O,
O)
Zr and
Zr(
O,
O)
Zr, have been measured to test the validity of the surrogate ratio method (SRM) in determining the (n,
) reaction cross section. The cross sections of the
Zr(n,
)
Zr reaction are derived from the experimentally obtained ratios and the cross sections of the
Zr(n,
)
Zr reaction in the equivalent neutron energy range of
= 0 - 8 MeV. The deduced cross sections of
Zr(n,
)
Zr reaction agree with the directly measured ones in the low-energy region, and with the evaluated ENDF/B-VII.1 data at higher energies of
3 MeV. The agreement supports the concept of the SRM method to indirectly determine the (n,
) reaction cross sections.