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Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2018 Impact factor 0.961

MANAGEMENT OF RADIOACTIVE WASTES IN CHINA

The policy and principles on management of radioactive wastes are stipulated. Cement solidification and bituminization unit has come into trial run. Solid radioactive waste is stored in tentative stor...

Pan Ziqiang(潘自强)

1994, 5 (3): 129

BaF2 TIME DIFFERENTIAL PERTURBED ANGULAR DISTRIBUTION SPECTROMETER

A BaF2 time differential perturbed angular distribution spectrometer has been'established at the HI-13 tandem accelerator in CIAE. The time resolution of the spectrometer is 195 ps and the nonlinearit...

Zhu Shengyun(朱升云), Gou Zhenhui(勾振辉), Zheng Shengnan(郑胜男) and Li Anli(李安利)

1994, 5 (3): 134

MONTE CARLO CALCULATION OF ENERGY DEPOSITION BY DELTA RAYS AROUND ION TRACKS*

The radial distribution of dose around the path of a heavy ion has been studied by a Monte Carlo transport analysis of the delta rays produced along the track of a heavy ion based on classical binary ...

Zhang Chunxiang(张纯祥), Liu Xiaowei(刘小伟), Luo Daling(罗达玲) and Li Mianfeng(李冕丰)

1994, 5 (3): 138

IRRADIATION EFFECT OF 0.56 GeV C6+ on Y1.6Ca1.4V0.45Sn0.5Sn0.5Fe4.05O*12

Y1.6Ca1.4V0.45Sn0.5Sn0.5Fe4.05O12 is irradiated by 0.56 GeV carbon ion. The irradiation eflect is investigated by Mössbauer spectroscopy. The irradiation results in an isotropic distribution of the hy...

Xiong Hongqi(熊宏齐), Hsia Yuanfu(夏元复), Hou Mingdong(修明东)

1994, 5 (3): 143

STUDY ON LUNG DOSE FOR DIFFERENT ANIMALS BY INHALATION OF SHORT-LIVED RADON DAUGHTERS*

The dose distribution in the lung is inhomogeneous. The dose to the basal cell layer of trachea and main bronchi is much higher than the dose to total lung both for rabbits at different ages and for d...

Li Suyun(李素云), Zhang Shenghui(张升慧) and Hou Haiquan(侯海全)

1994, 5 (3): 149

ION BEAM AND SIMS ANALYSIS ON DAMAGE OF GaAs DOPED WITH N+

The Rutherford backscattering (RBS) spectra of N+-implanted GaAs are measured with a Het ion beam of 2.1MeV. The backscattering yield along < 100 > aligned incidence increases with the increase in imp...

Wu Xiaoshan(吴小山), Lin Zhenjin(林振金), Chengzhou(姬成周), Yang Xizhen(杨锡震)

1994, 5 (3): 154

ARTIFICIAL NEURAL NETWORK IN MÖSSBAUER SPECTROSCOPY

A new approach of artificial neural network suitable for Mössbauer spectroscopy is proposed. The simulation results have demonstrated the effectiveness of the method.

Ni Xinlei(倪新蕾) and Hsia Yuanfu(夏元复)

1994, 5 (3): 162

LARGE VOLUME IONIZATION CHAMBER USED AS LABORATORY REFERENCE FOR LOW ENERGY X-RAY MEASUREMENT

A large volume spherical ionization chamber of 195 mm diameter and 0.36 mg/cm2 wall thickness made from conducting carbon-fibre epoxy composite material has been developed. The mechanical intensity of...

Yang Guoshan(杨国山), Xue Yongku(薛永库) and Cai Fangong(蔡反攻)

1994, 5 (3): 166

IMPROVEMENT IN PREPARATION OF LiF TLD AND OPTIMIZATION OF MEASUREMENT PARAMETERS

The technological process for preparation of LiF TLD is reported. Sixteen types of TLD of LiF:Mg,Ti and LiF:Mg,Cu,P series are produced for dosimetry of X, γ-radiations and in neutron-γ mixed radiatio...

Zhang Jian(张建), Guo Yong(郭勇), Wang Xinggong(王兴功), Yang Jiaxiang(杨甲祥), Zhu Yunping(朱云平) and Li Chenglin(李成林)

1994, 5 (3): 170

IMPROVEMENT ON PROPERTY AND WORKING LIFE OF FREEMAN SOURCE

The magnetic mirror field caused by a pair of mild steel circular in 15mm diameter, 2 mm thickness placed outside the discharge chamber can increase the atom ion ratio of nitrogen from 66% to 81%, and...

Zheng Sixiao(郑思孝), Sun Guanqing(孙官清), Wang Peilu(王培禄), Liu Zhongyang(刘仲阳), Jiang Jingyun(姜景云) and Liao Xiaodong(廖小东)

1994, 5 (3): 174

RADIONUCLIDES IN RICE IN HONG KONG

Radionuclide contents in imported rice are determined using the EG&G ORTEC photon spectrometer system. Most of the natural radionuclides are found to have specific activities below the detectable ...

K. N. Yu (余君岳) and S. Y. Mao (茅瑞恩)

1994, 5 (3): 176

SEPARATION AND PURIFICATION OF 234Th FROM AGED URANIUM SALT

This paper summarizes the results of separation and purification of 234Th from aged uranium salt with two processes (see flowsheet A or B). The flowsheet A: TBP extraction, anion exchange and TTA extr...

Ye Yuxing(叶玉星)

1994, 5 (3): 181

STUDIES ON RADIATION INDUCED CROSSLINKING OF CIS 1,4-POLYBUTADIENE BY 13C NMR

13C NMR spin-lattice relaxation times (T1), line widths, nuclear Overhauser effects (NOE) at room temperature have been measured for radiated cis 1,4-polybutadiene. With the increase of radiation dose...

Zhao Xin(赵新), Du Youru (杜有如) and Ye Chaohui (叶朝辉)

1994, 5 (3): 184

RADIATION HAZARD AND PROTECTION OF LOW ENERGY ACCELERATORS

In this paper, the origin and type of radiation hazards as well as the main aspects of radiation protection for low-energy accelerators are discussed in general, and the problems of radiation protecti...

Lei Qingzhang (雷清章)

1994, 5 (3): 188

 Nuclear Science and Techniques

ISSN: 1001-8042     eISSN: 2210-3147

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