13.5—14·6 MeV能区中子引起的89Y39（n，2n）88Y39反应截面的测量
Cross Section Measurement for （n, 2n） Reaction on Yttrium at the Energies of 13.5, 14.1 and 14.6 MeV）
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摘要: 用^93Nb（n，2n）^92mNb和^90Zr（n，2n）^89m＋gZr截面比法测定中子能量，以^93Nb（n，2n）^92mNb反应截面作中子注量标准，用活化法测量了13．5-14．6MeV中子引起的^89Y（n，2n）^88Y的反应截面值。由（13．5±0．3），（14.1±0．2），（14.6±0．3）MeV中子引起的^89Y（n，2n）^88Y反应截面值分别为（759±42），（835±42）和（958±53）mb。Cross section for （n, 2n） reaction on Yttrium have been measured at energy of 14 MeV neutrons from H（d, n）He by using activation technique. The ^93Nb（n, 2n）^92mNb reaction was used to monitor the neutron fluence, HPGe detector was used to detect the γ-rays. The cross section of ^89Y （n, 2n）^88Y reaction are 759 ± 42, 835 ±42, 958 ±53 mb for neutron energy 13.5 ±0.3, 14.1±0.2, 14.6 ±0.3 MeV, respectively.Abstract: Cross section for （n, 2n） reaction on Yttrium have been measured at energy of 14 MeV neutrons from H（d, n）He by using activation technique. The ^93Nb（n, 2n）^92mNb reaction was used to monitor the neutron fluence, HPGe detector was used to detect the γ-rays. The cross section of ^89Y （n, 2n）^88Y reaction are 759 ± 42, 835 ±42, 958 ±53 mb for neutron energy 13.5 ±0.3, 14.1±0.2, 14.6 ±0.3 MeV, respectively.
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