最新刊期
      卷 0 ， 期 0 ， 2020
      • Issue 1, (1995)
        摘要：he hardness values of Cr12MoV steel before and after N+ and Mo-implantation were measured. AES was used to determine the chemical composition ofthe implanted layers and the metallographic analysis was conducted. The effect of N+and Mo+ implantation on hardness of Cr12MoV steel was discussed.  
        关键词：Ion implantation;Cr12MoV steel;Hardness   
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        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：Two methods for preparing 15-（p-125I iodophenyl）-pentadecanoic acid werecompared. Within one hour IPPA can be easily labelled with 125I by theiodine-isotope exchange. In contrast to the direct labelling method of PPA, thismethod gives a 70% radio-chemical yield and the product with high purity.  
        关键词：?125)I radioiodine-labelling;15-（p-phenyl） -pentadecanoic acid;15-（p-￣（125）I iodophenyl）-pentadecanoic acid;p-iodine-phenylformic acid   
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        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：This paper describes a new way, the Two-peak Method, in which both thelow-temperature peak and the high--temperature peak in a TL glow curve are usedfor age determination. This method is useful in overcoming the difficulties arisingfrom the fact that parallel samples may have different TL response at a singletemperature peak.  
        关键词：TL dating;Two-peak Method   
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        发布时间：2021-04-09
      • Yu Hongchuan
        Issue 1, (1995)
        摘要：In this paper the principle and design method of a single photon bonedensitometer are introduced and the instrumental error is discussed.  
        关键词：ay absorption method;Bone densitometer   
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        <引用本文> <批量引用> 8411167 false
        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：“王淦昌优秀核科学和核技术论文奖”实施细则经中国核学会和中国科学院上海原子核研究所同意，决定在《核技术》和《ＮｕｃｌｅａｒＳｅｉｅｎｃｅａｎｄＴｅｃｈｎｉｑｕｅｓ》两刊物设立“王淦昌优秀核科学和核技术论文奖”作为专项奖金。“王淦昌优秀校科学和核技术论...  
          
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        <引用本文> <批量引用> 8411177 false
        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：Post-treatment such as electron beam heating and thermal annealing, was usedfor the r.f. magnetron sputtering deposited ZrO2-12wt%Y2O3 films. Studies on phasecomposition, oxidized states of Zr, and characterized morphologies of the films beforeand after post-treatment were made with SEM, XRD and XPS, and the selection ofpost treatment to increase film’s durability was also discussed.  
        关键词：Thin film;ZrO2-Y2O3;Post-treatment   
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        <引用本文> <批量引用> 8411191 false
        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：The self-burial process of a parabolic nuclear waste container, which releasesheat and melts its way through the surroundings in the direction of gravity, isstudied. The heat transfer and motion of the liquid melted in front of the containerare analysed by the film theory. The surface temperature and self-burial rate of thecontainer are derived, and some influential factors are discussed.  
        关键词：Phase change phenomena;Nuclear waste disposal;Heat transfer   
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        <引用本文> <批量引用> 8411209 false
        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：The structure and measurement principle of a heat-loss-compensated aluminiumabsorbed dose calorimeter are described. Electrical calibration factors of thecalorimeter in the working temperature range from 10 to 35℃ are given. Thedistribution of dose rate to the distance in a 6oCo irradiation room is obtained.  
        关键词：Aluminitum;Absorbed dose;Calorimeter;γ ray;Computer data acquisition   
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        <引用本文> <批量引用> 8411218 false
        发布时间：2021-04-09
      • Li Xiaolin
        Issue 1, (1995)
        摘要：High sensitive instrument neutron activation analysis is connected with highefficient nickel sulphide fire assay technique to establish the method for determingplatinum group elements（PGE） in geological materials. All PGE in some geologicalreference standard materials are analysed quantitatively. It is shown that this methodcan determine accurately all PGE at μg/kg concentration in geological materials.  
        关键词：platinum group element;Neutron activation analysis;Nickel sulphide fire assay   
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        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：The structure of Fe73.5Cu1Nb3Si13.5B9 nanocrystalline material as a function ofannealing temperature was investigated by X-ray diffraction（XRD） and positronannihilation technique（PAT）. The experimental results indicate that the amorphoussample startS nucleation and primary incrystallization at 480℃, and b.c.c. α-Fe（Si）solution separates out from the matrix. The amorphous diffusion peak decreases andthe crystalline diffraction peaks increase with annealing temperature. The crystallinefraction and the average distance among atoms in amorphous phase as a function ofannealing temperature are computed based on the diffraction spectra. The PATexperiments prove that the amorphous Phase at grain boundary mainly containing Nband B atoms exists in the sample after annealing at about 550℃。The change ofS-parameter is in accordance with that of the atomic average distance in amorphousphase with annealing temperature.  
          
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        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：A rare meteorite, composed of a black part and a white part, was investigated bymeans of the 57Fe Mdssbauer effect. It is found .that both parts are composed ofolivine, pyroxene, troilite and kamacite, but with different contents. It is also provedthat this meteorite belongs to the equilibrated olivine-bronzite chondrite.  
        关键词：M■ssbauer spectroscopy;Meteorite   
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        <引用本文> <批量引用> 8411069 false
        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：The yields of inorganic phosphate and base released from 5’-dTMP irradiated by30 keV N+ ion beam were investigated. The fluence effects of these yields and theinfluence with 0.1 mol/L NaOH treatment on them were presented. It was shown thatthe alkali treatment would not only increase the yield of inorganic phosphate, butalso damage and then split base released from the irradiated 5’-dTMP. When theirradiated samples were treated with 0.1 mol/L NaOH immediately, the yield ofinorganic phosphate was increased by a factor of 1.7 and the concentration of basedecreased to half of that in the sample’s water solution. Furthermore, the yield ofinorganic phosphate would increase by a factor of 2.8 after 40 min of alkalitreatment. Irradiation effects of ion beam were mainly direct ones and had a highervalue of G（Pi）, greater than 0.44 molecule/100eV.  
        关键词：Ion beam irradiation;5’-dTMP;Inorganic phosphate release;Base release;Alkali treatment   
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        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：CaVSn:YIG was irradiated with 47 MeV/u carbon ions at Heavy Ion ResearchFacility of Lanzhou（HIRFL）. The irradiation effects were studied by Mossbauerspectroscopy and positron lifetime measurement. The irradiation resulted in anisotropic distribution of the hyperfine magnetic field. No amorphous area Wasdetected in irradiated samples. The defects induced by irradiation were foundincreasing with the electron stopping power.  
        关键词：CaVSn:YIG;Energetic carbon ions;Irradiation effect;M■ssbauer spectrum;Positron lifetime   
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        发布时间：2021-04-09
      • Li Zhenkun
        Issue 1, (1995)
        摘要：Briefly described its an iterative non-linear least-square fitting approach toanalyse overlapped peaks of energy-dispersive X-ray fluorescence spectra and alinear least-square fitting method for matrix correction of the spectrtum analysis. Acomputer software was compiled and successfully used to analyse multi-element rareearth samples.  
        关键词：Energy-dispersive X-ray fluorescence spectra;Least-square fitting approach;Rare earth sample   
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        发布时间：2021-04-09
      • Issue 1, (1995)
        摘要：ositron lifetime measurements are made in the as quenched state as well as inisochronal anneating cycle of the metaglasses Fe73.5Cu1Nb3Si13.5B9 andFe73.5Cu1Nb1.5Mo1.5Si13.5B9 respectively. The behaviors of lifetime are explained byinvoking the free volume model which affirms the existence of two kinds of freevolumes. The variation of positron lifetime as a function of annealing temperatureindicates the stages corresponding to structural relaxation and crystallization.  
        关键词：Positron annhilation;Nanocrystalline material;Free volume   
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        发布时间：2021-04-09
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