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在1.2米回旋加速器上利用多道毫微秒飞行时间谱仪试测了能量为4.7及2.5兆电子伏的中子在铁上的散射能谱,定出了铁的第一激发能级数值为0.8兆电子伏。在能量为2.5兆电子伏时,还试测了碳及铀的散射中子能谱。
The scattering energy spectra of neutrons with energy of 4.7 and 2.5 MeV were measured on a 1.2 m cyclotron using multichannel nanosecond time-of-flight (TLS) spectroscopy. The first excitation energy level of iron was 0.8 MeV. Scattered neutron spectra of carbon and uranium were also tested at energies of 2.5 mega-electron volts.