Nuclear Science and Techniques

Neural network for mass reconstruction of resonance particle with missing energy

Neural Network can be designed to reconstruct the mass of resonance particle with large missing energy. Taking the Higgs particle search through decaying channel H0 →τ+τ-→eμx and H0→W+W-(ZZ)→ llv...

Zhang Zi-Ping (张子平)

1996, 7 (2): 65

Experimental studies of nonlinear laser-plasma interactions and hot electrons

Observation shows that the stimulated Raman scattering (SRS) in a cavity target irradiated by 1.053ym laser is the dominant mechanism in producing hot electrons. In cavity targets, stimulated Brilloui...

Qi Lan-Ying(祁兰英), Zheng Zhi-Jian(郑志坚), Mei Qi-Yong(梅启良), Li San-Wei(李三伟), Zhao Xue-Wei(赵雪薇), Xie Ping(谢平), Li Wen-Hong(李文洪), Yang Xiang-Dong(杨向东), Tang Dao-Yuan(唐道源), Ding Yao-Nan(丁耀南)

1996, 7 (2): 69

Investigation on two-phase flow instability in steam generator of integrated nuclear reactor

In the pressure range of 3-18 MPa, high pressure steam-water two-phase flow density wave instability in vertical upward parallel pipes with inner diameter of 12mm is studied experimentally. The oscill...

Jing Jian-Gang (荆建刚) and Chen Ting-Kuan (陈听宽)

1996, 7 (2): 73

Effect of steam quality on two-phase flow in a natural circulation loop

Test pressures are 1.0-4.0 MPa, heating powers 27-190kW, inlet subcoolings 5～80°C, water used as coolant, and steam quality at the outlet of test section is less than 0.05. These test conditions cover...

Jia Hai-Jun (贾海军), Wu Shao-Rong (吴少融), Wang Ning (王宁) and Yao Si-Min (姚思民)

1996, 7 (2): 81

Study on fine quartz pre-dose techniques

When using the pre-dose technique in ceramic dating, it is essential to add a calibration dose and to eliminate the background dose. For doing this measurement the sample requires multiple activation ...

PL Leung (梁宝鎏), M J Stokes, Wang Wei-Da (王维达), Xia Jun-Ding (夏君定)

1996, 7 (2): 85

Improved quasi-static nodal Green's function method

To solve the multi-dimensional transient neutron diffusion equations, improved quasi-static Green's function method (IQS/NGFM) is adopted to deal with the temporal problem, which will increase the tim...

Jing XingQing(经荣清), Li JunLil(李君利), Hu DaPu(胡大璞)

1996, 7 (2): 90

Fast convergent study on potential-harmonic method of directly solving Schrodinger equation in few-body systems

The correlation-function potential-harmonic and generalized-Laguerre-function expansion method (CFPHGLF) of directly solving the Schrodinger equation in few-body systems is presented and applied to th...

Wang YiXuan(王沂轩) and Deng CongHao(邓从豪)

1996, 7 (2): 95

Mantle metasomatism for metaperidotite from Shuanggou ophiolite of Yunnan Province by proton microprobe

This study shows that olivine, serpentine and orthopyroxene are enriched with compatible element Ni; clinopyroxene with Ni and Y; spinel strongly with Ni, Zn, Ga, Ge, As and Zr; chlorite with Ni ,Zn, ...

Chen YouHong(陈友红), Zhu JieQing(朱节清), Wu XianKang(邬显慷), Gnu YingMei(谷英梅), Li XiaoLin(李晓林), Zhang Qi(张旗), Xu Ping(徐平), Li XiuYun(李秀云)

1996, 7 (2): 99

Plasma properties of laser-ablated Si target in air

In plasma emission spectra produced by pulsed laser ablation of Si target in air, under the assumption of local thermodynamic equilibrium (LTE), the electron temperature and the electron number densit...

Wang XiangTai(王象泰), Man BaoYuan(满宝元) Wang GongTang(王公堂), Fan XiJun(樊锡君) Wang Jun(王军), Xu BingZhang(许炳璋), Mei LiangMo(梅良模)

1996, 7 (2): 103

Gamma ray irradiation induced point defects in BaF₂^*

Abstract There are some original nonmagnetic point defects in the BaF crystallite powder, such as interstitial and vacant F- which can become paramagnetic centers by γ-ray-irradiation at room temperat...

Hou Bi-Hui(侯碧辉) and Yang Hong-Bo(杨洪波)

1996, 7 (2): 107

The measuring significance of vierbein

The problem of what is observable in general relativity is investigated. It is proposed that what is observable in curved spacetime is Lorentz quantity instead of Riemann quantity. With the help of La...

Feng Shi-Xiang(Sze-Shiang Feng, 冯世祥) and Zong Hong-Shi(宗红石)

1996, 7 (2): 110

Metabolic peculiarity of ¹³⁴Cs and its radioimmunotoxicological effect on central and peripheral immune cells

A fitted equation with least square method to describe the retention of 134Cs in whole body is obtained by a whole body counter. That is R(t) = 18.04 exp(—9.3175t) + 45.13 exp(—0.0423t), where R(t) is...

Zhu Shou-Peng(朱寿彭) and Xia Fen(夏芬)

1996, 7 (2): 113

Effects of selenium and vitamin E deficiencies on level of leukotriene C₄

A reduction in the glutathion peroxidase (GSH-Px) activity of the blood and myocardium accompanied with an increase in the leukotriene C4(LTC4), free radicals and lipid peroxides (LPO) concentrations ...

Liu Wei-Min(刘为民), Yue Li-Jie(岳丽杰), Li Guang-Sheng(李广生) and Zhang Xiu-Yun(张秀云)

1996, 7 (2): 118

ICP-AES techniques applied to analysis of precious metals in ores

A method for the simultaneous determination of precious metals and matrix elements in Fe and Cu ores is studied. The instrument used is ICAP-9000 polychromator and jts accessory Inonochrormator(N十1). ...

Fang Qi-Ying(方企嫈), Zhou Hong-Di(周洪弟) and Cai Xi-Ming(蔡锡明)

1996, 7 (2): 121

The first PET scanner made in China and its clinical application

The structure and technical indices of PET scanner (PET-BO1) are described. It is applied to do the clinical research work by using the positron 68Ga-citrate and 68Ga-BATTECH in 34 human bodies. All o...

Zhu Guo-Hong(朱国弘), Chen Wei-Chang(陈惟昌), Yan Jue(颜珏) Ma Bu-Cheng(马步成) and Li Wen-Ping(李文萍)

1996, 7 (2): 124

Induced effect of irradiated exogenous DNA on wheat

Irradiated exogenous DNA introduced into wheat can give rise to break of DNA-chain and damage of part of alkali radicals. Introducing exogenous DNA irradiated by γ rays could increase Do fructificatio...

Li Zhong-Jie(李忠杰), Sun Guang-Zu(孙光祖), Wang Guang-Jin(王广金) Tang Feng-Lan(唐风兰), Zhang Yue-Xue(张月学), Yan Wen-Yi(阎文义) and Chen Yi-Chun(陈义纯)

1996, 7 (2): 126

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