自发裂变

用~（252）Cf自发裂变中子源刻度中子探测器效率

Efficiency calibration of neutron detectors with ￣( 252 ) cf spontaneous fission neutrons

~（252）Cf自发裂变谱形对中子反射实验数值模拟的影响

Structure of Spontaneous Fission Spectrum of ~ ( 252 ) Cf and Its Impact on Neutron Albedo Experiments ' Simulation

~（252）Cf自发裂变源碎片中短寿命核测量的程序控制系统

A Microcontroller System for Short-Life Nuclide Measurement of ~ ( 252 ) Cf Fission Fragment

~（248）Cm和~（252）Cf自发裂变瞬发中子谱测量

Measurement of ~ ( 248 ) Cm / ~ ( 252 ) Cf Cf Spontaneous Prompt Fission Neutron Spectrum

n-γ分辨应用于~（252）Cf自发裂变中子飞行时间谱测量

The application of n - γ discrimination in ~ ( 252 ) Cf spontaneous neutron TOF spectra measurement

~（252）Cf自发裂变中子源的化学回收流程

Chemical process for the recovery of ~ ( 252 ) CF from a ~ ( 252 ) CF spontaneous fission neutron source

~（252）Cf自发裂变中子诱发~（235）U裂变时几个核素裂变产额的绝对测定

The absolute determination of cumulative yield of several nuclides from induced fission of ~ ( 235 ) u by neutrons of spontaneous fission of ~ ( 252 ) cf

由于铀，钍、锕三系能直接发射微量重离子~（14）C，以及自发裂变中子和α-衰变与物质发生核相互作用，也可产生~（14）C。

Heavy-ion 14 ~ C can not only be directly emitted by three radioactive series ( 238 ~ U , 235 ~ U and 232 ~ Th ), but can also be produced by neutrons of the spontaneous fission and α - decay interacting with matter .

经与从Ac到Cf范围内的裂变核素、其激发能由自发裂变高到45MeVα粒子诱发裂变的实验比较，该公式能较好地反映中子分布的主要特征。

The formula well reproduces the general trends of experimental data for a wide range of fissioning nuclides from Ac to Cf with excitation energies from spontaneous fission to 45 MeV alpha particles induced fission .

采用高计数率符合中子计数器测量材料中的240Pu等核素自发裂变产生的裂变中子，通过计算等效240Pu量来确定材料中的总含Pu量。

The coincidence count of the spontaneous neutron of even mass Pu isotope was measured with a high level neutron coincidence counter . The total Pu in material is calculated out in term of the effective 240 Pu mass and Pu isotope composition .

重核自发裂变寿命的新公式

New Formula for Spontaneous Fission Half-Lives of Heavy Nuclei

~8Be核自发裂变的微观研究

Microscopic study for spontaneous fission of ~ 8be

重核的结团放射性强调了α衰变、结团放射性和自发裂变中应保持宇称守恒。

The conservation of parity in α - decay , cluster-radioactivity , and spontaneous fission of nuclei is stressed .

它可以从铀原子自发的裂变中自然产生。

It can be naturally generated from Uranium atom that has spontaneous split .

对于多数样品，自发和诱发裂变径迹密度（ρ8和ρi）之间的相关系数rsi大于0.8，这也表明了该井大部井段地层相对稳定。

For large part of the samples r_ ( si ) > 0.8 ( r_ ( si ) is a correlation coefficient between spontaneous and induced fission track densities ), which also shows that the region was in a stable geological state .