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      • Yexun Cheng,Lei Liu
        Vol. 09, Issue 11, (1986)
        摘要：The portable double channel X-ray fluorescence analyzer with filters can measure the characteristic X-ray and scattering intensity quickly. The mathematic model for correcting matrix effects was reported by using calculated mass absorption coefficients of samples and very good results are obtained.  
        关键词：portable RI X-ray fluorescence analyzer;Compton scattering;mass absorption coefficients;mathematic model   
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        发布时间：2022-09-13
      • Huilin Jiang,Jingyun Fan,Shuying Wang,Kang Long,Zhengsen Wang,Luhua Cheng,Zhongren Yang,Jingsheng Zhu,Junhong Zhou,Jian Jiang,Qiwei Long,Shurao Fang,Lanyu Wang,Jianxian Song,Xianyi Zhou
        Vol. 09, Issue 11, (1986)
        摘要：A set of one-dimension angular correlation of positron annihilation radiation (1-D ACPAR) is introduced. Its principle of physical design, the main performance, the regulation method and the experimental consequences were described. The angular resolution obtained is 0.45mrad.  
        关键词：one-dimension angular correlation of positron annihilation radiation;(1-D ACPAR) free annihilation;trapping annihilation;positronium momentum distribution of electrons;angular resolution   
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        发布时间：2022-09-13
      • Wenxiang Hu,Miaojun Hu,Fanghua Yu,Hanmin Chen,Delin Cao
        Vol. 09, Issue 11, (1986)
        摘要：A simple method combined Mössbauer dispersion with resonance filter for measuring small energy shift and weak lines was described. Small energy shift (0.01mm/s)and weak components (less than 5 vol. P.C. a phase) can be directly obtained from the Mossbauer dispersion method of absorption compensated to scatterer with different thickness of absorber. The method is suitable for the Mossbauer measurements of the multiphase steel samples.  
        关键词：Mossbauer spectroscopy;dispersion;small energy shift   
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        发布时间：2022-09-13
      • Keqin Li
        Vol. 09, Issue 11, (1986)
        摘要：Three examples of the α card method have been studied for buried uranium deposilion exploration. And, the efficiency of the α card method for uranium exploration is proved. It is shown that it is possible to differentiate the anomaly caused by uranium bodies from those by structure by means of conbining background of geology with the anomaly of the α card method and considering the character of the anomaly.  
        关键词：the α card method;buried uranium doposits;the activated charcoal method   
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        发布时间：2022-09-13
      • Genlai Xiao,Shouzao Gui,Jiahui Gu,Jiaqi Tian,Jingyi Liu,Shuanghui Shi
        Vol. 09, Issue 11, (1986)
        摘要：A simple gas transport system is described. Air is used as medium to take out gas radioactivities through a capillary to the gas collecting chamber. Then they are measured by a Ge(Li) detector. The system combining with a γ-ray multispectra analysis technique is used to study γ-ray energies, relative intencities and half lifetimes of gas radioisotopes produced by nuclear reaction.From γ-ray multispectra of 23Ne isotope produced by reaction 23Na(n,p)23Ne, the half-life of 37.3±0.7 s and γ-ray energies of 23Ne were determined. The results are well consistent with the values given in literatures.  
        关键词：gas transport system;Ge (Li) detector;multispectra analysis technique   
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        发布时间：2022-09-13
      • Liangming Wang
        Vol. 09, Issue 11, (1986)
        摘要：The axial potential functions, the axial electric field intensities and the second derivatives of the axial potential functions for two-cylinder lenses and three element einzel lenses are discussed. The transfer matrices for these lenses have been described. The transportation of the intensity of the charged part ices in our 2.5 MeV Van de Graaff accelerator has been calculated.  
        关键词：two-cylinder lenses;three element einzel lenses;axial potential function;transfer matrice   
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        发布时间：2022-09-13
      • Guogan Wang,Naitan You,Jianya Yao
        Vol. 09, Issue 11, (1986)
        摘要：After storing the HPGe detector at room temperature for 1056 hours and circulating 15 times from room temperature to liquid nitrogen temperature, the performances of the detector is still excellent. FWHM of 169.1 eV and 408 eV is obtained for 55Fe (5.9keV) and 241Am(59.5keV), respectively.  
        关键词：HPGe detector;energy resolution;Stability   
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        发布时间：2022-09-13
      • Qili Liu,Baofu Wang,Maojie Yang,Nanzhang Wang,Mingxiao Wang,Shengxue Liu,Rugui Wang,Zhiya Zhu
        Vol. 09, Issue 11, (1986)
        摘要：This paper represents a method of preparation of ion-implanted semi-conductor γ radiation detector used for the purposes of radiation monitoring. The electrical and dosimetric performances of the detector are also introduced. They are specially suitable for the application in rugged field conditions.  
        关键词：γ radiation detector;Semiconductor detector   
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        发布时间：2022-09-13
      • Yinzao Zhou,Guoxiao Ren
        Vol. 09, Issue 11, (1986)
        摘要：The dependence of response of plastic track detector CR-39 (DOP) on registration temperature by means of a new type of cryostat was reported.  
        关键词：plastic track detector;dependence of response on registration temperature   
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        发布时间：2022-09-13
      • Shulan Wu,Jiachao Chen,Kezun Xu,Guangwen Yan,Ruiqi He
        Vol. 09, Issue 11, (1986)
        摘要：A data handling machine of thyroid gland function instrument has been designed and tested. It can calculate absorbing iodine rate and restrain rate of thyroid gland automatically.  
        关键词：thyroid gland;absorbing iodine rate;restrain rate;data handling machine   
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        发布时间：2022-09-13
      • Jiayu Ma,Wantong Mou,Xiurong Sun,Sunjun Xie,Wo Fan,Zhizheng Zhao
        Vol. 09, Issue 11, (1986)
        摘要：The on-line separation of Hf and Ta produced by the reactions of 163Dy(12C, xn)Hf and 165Ho(12C,xn) Ta, respectively, have been carried out and the separating conditions have been discussed. From the experimental results one can see that it is possible to separate elements 104 and 105 with a similar thermochromatographic method.  
        关键词：thermochromatographic соlumm;on-line separation of Hf and Ta;transport efficiencies of gas-jet system   
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        发布时间：2022-09-13
      • Zhenguo Yang,Tianmei Zhang
        Vol. 09, Issue 11, (1986)
        摘要：109Cd is a radioisotope with a half-life of 453 days and its decay daughter 109mAgemits 22 keV X ray and 88 keV γ ray. Since the absorption coefficients of the 22 keV X ray in water and oil are significantly different, the 109Cd is very suitable X ray source as oil-water analyser for the determination of fraction of water contained in oil(water/oil ratio). Considering the rather low energy of 22 keV X ray, we used the molecular plating method which has the advantages of high deposition efficiency, and short deposition time. The plating layer are thin, uniform, less self absorption and strongly adhesive to the base material. The intensity of 109Cd X ray source prepared is 1×107/s.  
        关键词：molecular plating;109Cd X ray source   
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        发布时间：2022-09-13
      • Zhaoxiang Sun,Yutai Jin,Zhaoxing Meng,Yuquang Wu,Xinfu Wang,Xizhang Feng
        Vol. 09, Issue 11, (1986)
        摘要：A method for removing Na and Sc from activated rocks is described in the deter-mination of REE by neutron activation analysis. Absorbing experiments were carried out on improved HAP, using 24Na, 46Sc, 59Fe, 141Ce and 155Eu as indicators. Almost 100% 24Na and more than 95% 46Sc were removed in an improved HAP column.Finally, the determination of REE in OPH 163 rocks by the combinatory neutron activation analysis using present method has been carried out. Experimental data indicated that more than three elements (Pr, Nd and Ho) have been determined by this method as compared with non-destructive neutron activation anlysis and the proposed method was sensitive and feasible.  
        关键词：NAA;interference element;REE;improved;HAP   
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        发布时间：2022-09-13
      • Lianghua Ye,Zhoulei Mei,Yin Ye,Ping Li
        Vol. 09, Issue 11, (1986)
        摘要：In order to improve the properties of plexi glass and develop new product, the possibility for preparing crosslinking polymethyl methacrylate was tried.Three methods were carried out:A. Methyl methacrylate was polymerized in bulk at room temperature.B. Radiation polymerization of methyl methacrylate in the supercooled liquid phase between the range of -20—-10℃ were observed.C. Under certain experimental conditions, highly crosslinked polymethyl methaery-late could be formed. Crosslinked polymer of Mc=2×104 means linear polymer with molecule weight of 2×106 which had 100 crosslinking points.The measurement of Mc, average molecular weight between crosslinks was established by measuring the swelling capacity of crosslinking polymethyl methacrylate.  
        关键词：radiation polymerization in bulk;radiation polymerzation;in supercooled liquid phase;radiation crosslinking   
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        发布时间：2022-09-13
      • Dezhong Zhou,Yongzhen Deng,Ying Li
        Vol. 09, Issue 11, (1986)
        摘要：The characteristics of the chrome-tanned sheep skin treated by radiation-induced graft of BA is presented.Using the method of radiation-induced graft of BA instead of the chrome-retanning, the leather has been obviously improved not only in the surface, such as the brightness, fullness, uniformity of the thickness but also in the physical characteristics such as retaining of tensile strength, decreasing of water absorption after being immersed in water for 2h, and 24h, enhancement of tearing strength and stitch tear strength. Although the air permeability and water vapor permeability are a bit worse than the control, however is still in the range of the standard issued by Light Industry Ministry of our country.  
        关键词：radiation-induced graft;chrome-tanned sheep skin;n-butyl acrylate;chrome-retanning   
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        发布时间：2022-09-13
      • Jianmin Song
        Vol. 09, Issue 11, (1986)
        摘要：The dosimeter with the dose range suitable for the radiation processing is few. This paper describes the alanine free radical dosimeter by chemical read-out. The irradiation alanine (50 mg) are dissolved in 10 ml of the solution containing 0.20 mmol/1 ferrous sulphate and 0.20 mmol/1 xylenol orange in 0.025 mol/1 sulphuric acid (FX). The absorbance of ferric-xylenol orange complex in the presence of alanine is measured at 540nm—550nm. The dose ranged from 200 Gy to 10 kGy can be measured. The dosimeter is quite stable for about one year after the irradiation. The technique is simple and accurate. The results are very good.  
        关键词：Alanine;free radical dosimeter;ferricxylenol orange;Radiation processing   
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        发布时间：2022-09-13
      • Yuzhi Guo,Qinfang Kuang,Bin Low,Ping Fang,Yian Zhao
        Vol. 09, Issue 11, (1986)
        摘要：This paper reports the labelling method and procedure of Tc-99m-TBI preparation by homogeneous ligand exchanging, This labelled method is easy, with the labelling. rate and radiochemistry purity over 90%. It is convenient to use and popularize in clinic. The clearance of Tc-99m-TBI from the blood in rats was quick, T1/2α was 3.7 min, T1/2β was 63 min. Heart/blood ratio was 62.2 and 48.7 in mice at 1 and 2h after giving drug, while heart/liver ratio was 0.85 and 0.81, and heart/lung ratio was 3.7 and 4.0. And dose %/g organ was 11.1±2.6%, 13.1±2.1% and 12.8±1.5% in myocardium of mice at 1, 2, 4h after injection. The Tc-99m-TBI was a new promising myocardial imaging agent.  
        关键词：Tc-99m-hexakis (t-butylisonitrile);labelled;ligand exchange;animal experiment   
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        发布时间：2022-09-13
      • Bailing Yan
        Vol. 09, Issue 11, (1986)
        关键词：Data acquisition system;UNIX C langnage MBD;CAMAC;Software;Program;process;event analysis;Accelerator   
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        发布时间：2022-09-13
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