| 1. | Activation detection of the neutron yield from a dpf pulsed neutron source 脉冲中子源中子产额的活化测量研究 |
| 2. | The author of this paper has developed a controlled circuit of the pulse neutron generator 必须对脉冲中子发生器原来的控制电路重新研制。本论文对脉冲中子发生器控制电路进行了研究。 |
| 3. | The spallation neutron source providing the most intense pulsed neutron beams in the world is being built in tennessee by the u . s . department of energy 美国能源部正在田纳西州建造世界上最强脉冲中子束的散裂中子源。 |
| 4. | By using this method , the measurement precision has reached the requirement of coal analysis , and a pulse neutron coal fast analyzer has been developed 利用此方法,已经使测量精度达到了煤质分析的要求,并且研制出脉冲中子煤质快速分析仪。 |
| 5. | The study on fast neutron physics and relative technique of experiment and data analysis made at a pulsed neutron generator in beijing normal university during recent yeras is introduced 摘要综述近年来在北师大低能所的国内第一台脉冲化高压倍加器上开展的快中子物理,及有关的实验和数据处理技术研究。 |
| 6. | Utilizing the pulse neutron generator working with controlled circuit and time amplitude converter , the ash content in coal is measured , and we provides a safe and on line methods 通过该思路,利用脉冲中子发生器,控制电路,多道脉冲幅度分析器对煤中灰份的含量进行了测量,提出了一种实时、安全的快速检测方法。 |
| 7. | The pulse neutron generator " s delaying time are measured by the time - amplitude converter and multichannel pulse amplitude analyzer . according to these times , the linear gate circuit " s opening time can be adjusted 用它和多道脉冲幅度分析器配合测量脉冲中子发生器发射中子的滞后时间,据此调整线性门电路的开门时间。 |
| 8. | The pulse neutron generator can be used to analyze the elements in substance , because it can produce pulse neutrons which have the characteristics such as high energy , monohcrome , safe using and controlled easily 脉冲中子发生器具有产生的中子能量高、单色性好,可控、使用安全,可产生脉冲中子的特性,可用来对物质进行元素分析。 |
| 9. | Adopting single pulse neutron exposure 22ne ( a , n ) 2dmg and the updated neutron cross section , making use of the core helium burning model of the single neutron exposure theory , we calculate the s - process nucleosynthesis in massive stars at different mettalicity and compare the results with the solar s - weak component 我们采用单脉冲中子源‘ zne ( a , n ) zsmg ,采用最新发表的中子俘获截面,用中心氦燃烧模型计算了各金属丰度情况下15m m叼0m 。的大质量星的s过程核合成,并将所得结果与太阳的s刁分量进行比较。 |
| 10. | Using it , time amplitude converter and pulse neutron generator , the y spectra of 14mev pulse neutrons is measured . utilizing the time difference of several different reactions about the interaction of neutrons and nucleus , the whole spectra and the capture spectra are measured . a method that uses double gate subtracting background to gain the fast neutrons " inelastic scattering y spectra is introduced 研制了一种线性门电路,介绍了它与脉冲中子发生器、多道脉冲幅度分析器配合,进行14mev脉冲中子谱的测量,利用中子和原子核相互作用的几种反应在时间上的差异,测量了总谱和俘获谱,采用双门减本底方法得到了快中子非弹性散射谱。 |