最新刊期
      卷 0 ， 期 0 ， 2020
      • Issue 1, (1994)
        摘要：The accumulative dynamic of 89Sr in the kidney bean and its effect on the waters were studied. It is shown that 89Sr would tyansfer to kidney beau rapidly and the accumulation of 89Sr in the kidney beau follows a positive exponential relation with time, but follows a negative exponentical relation with depth of the soil. After the soil was leached and seeped by rain, the 89Sr would enter into waters for 5% and be distributed to each component of waters. The specific activity of 89Sr was low in the waters and honewort, high in the bottom mud, and highest in the fish and snail,showing that fish and snail can strongly concentrate 89Sr in waters.  
        关键词：9)Sr;Kidney bean;Radioecology;Concentration factor   
        8
        |
        33
        |
        2
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408841 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：100 keV ion implanter for metal surface modification has been constructed. It has two functions, i.e. direct implantation of nitrogen ions with energy of tens to 100 keV into work pieces, or ion beam mixing and recoil implantation adopted for implanting non-nitrogen elements. The overall structure and major parts of the imlanter are described. After tuning the main work parameters, the machine has met the design target. The machine runs stably and reliably and several experiments on metal surface modification are being performed.  
        关键词：Ion implanter;Metal surface modification;Ion mixing;Ion sources   
        9
        |
        53
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408854 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：Gastric and colonic cancer tissues, gastric and pulmonary cell lines and corresponding controls were analyzed by the PIXE method. The contents of potassium in rapid hyperplasia tissues were significantly higher than those in slow hyperplasia, but there were no significant differences between cancer and normal cell lines under the same proliferative state. The results suggest that the high contents of potassium in cancerous cells be relative to the velocity of hyperplasia.  
        关键词：Potassium;Cancer cell;PIXE;Hyperplasia   
        7
        |
        56
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408872 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：“王淦昌优秀核科学和核技求论文奖”（１９９０—１９９１）评定揭晓《核技术》和（（Ｎｕｄｅ出ｉｅｎｃｅａｎｄＴｅｃ切ｄｑｕｅｓ））两刊设立的“王涂昌优秀核科学和核技术论文奖”首次评奖（１９９０—１９９１）工作，根据评奖“实施细则’要求的程序，经评委评论...  
          
        8
        |
        17
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408887 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：The effect of band with of the multimode step index fibers under γ irradiation has been investigated. It was found that band width of the optical fibers decreased as irradiation dose increased, and the decrease of band width reached to 60%. The possible cause for the result is discussed.  
        关键词：Multimode step index optical fibers;Irradiation dose;Band width   
        10
        |
        42
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408889 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：Radioiodine labelling of TNT and its derivative ANT by the chloramine-T method is reported and radioimmuo- assay of the TNT and ANT is described.  
        关键词：TNT;ANT;Radioiodine labelling   
        7
        |
        26
        |
        2
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408909 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：The damage and annealing behavior of 1.56 MeV Sb+ ion implanted Si（100） have been studied. The dose range of implantation was 2 × 1013-5 × 1015 Sb+/cm2. The samples were annealed for 30 minutes in flowing Ar gas at temperatures ranging from 500 to 1050 ℃ in a conventional furnace tube. The implantation-induced damage and annealing quality of the samples were measured with 3 MeV He+ RBS/channeling and TEM techniques. In addition, a computer simulation of ion implantation damage has been performed with TRIM program. It is concluded that the category of defects is related to ion dose and annealing temperature of samples.  
        关键词：Implantation;Annealing;Defects;Recrystalization   
        9
        |
        35
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408721 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：Growth of metallic compounds during the pulsed Ti or Mo ion implantation into steel and Al is studied experimentally and theoretically. The relation of the compound growth law with target temperature rise is given. A comparison of the results of pulsed ion implantation with the in situ TEM observation shows that the growth temperature during implantation （400℃ ） is much lower than that during annealing（600℃ ）, which indicates that the flux of vacancies and interstitials can promote the growth of metallic compounds. More than ten kinds of the compounds have been obtained using MEVVA ion implantation. Because the compounds are formed in the implanted layer, hardness of the implanted layer increases and the wear property is umproved.  
        关键词：Pulsed ion implantation;Metallic compounds;Growth model;Temperature rise;Hardening   
        8
        |
        32
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408738 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：Some theoretical considerations for the development of a fission-couple are introduced. The performances of the fission- couple are determined experimentally.The detector can be used to monitor the temperature-time relations of fissile bead in neutron radiation field. Its sensitivity to neutron is about 3× 109 thermal neutrons/cm2. ℃ and time response is better than 1 μs.  
        关键词：Fission-couple;Fission bead   
        8
        |
        20
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408762 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：A special dose effect, deviating from traditional theory, of tyrosine implanted by low energy N- ion beam has been found. Its mechanism is discussed and a mathematical expression is deduced to reflect the importance of the mass deposit effect.  
        关键词：Ion beam;Tyrosine;Dose effect;Mass deposit effect   
        9
        |
        47
        |
        19
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408769 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：The emission Mossbauer spectroscopy in combination with other methods was used to study NiTi shape memory alloy（SMA） after the sample was water quenched from 700℃ and aged at 500℃ and isochronal annealing at different temperatures. The Ni56Ti44 phase in NiTi SMA has been obtained after different heat treatments. The reason why the NiTi SMA has the best shape memory property after quenching from 700℃ and aging at 500℃ is also given.  
          
        9
        |
        53
        |
        2
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408780 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：An ion implantation system based on a 30 keV mini-separator has been set up and tested at Fudan University. With the system up to some ten μA/cm2 of ion beam current of rare-earth elements such as Y, Ce, Ho, La, Sm, Nd and Yb, have been obtained. The modification of corrosion resistance for an Y ion implanted stainless steel sample has also been investigated.  
        关键词：Yttrium ions;Ion implantation;Corrosion resistance   
        8
        |
        72
        |
        3
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408804 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：The chromium-rich yeast, as a trace element tonic with a supplementary curative effect on the diabetic and cardiovascular diseases, has been prepared in this work. The chromium species in the yeast was studied by using 51Cr tracer to elucidate the pharmacodynamics of the Cr-rich yeast. Chromium in the yeast partly exists in an organic species-glucose tolerance factor（GTF）. The GTF with high activity can assist insulin to play a certain role in maintaining normal glucose tolerance.  
        关键词：Chromium- rich yeast;Diabetes;GTF;Radioactive tracer   
        10
        |
        69
        |
        7
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408813 false
        发布时间：2021-04-09
      • Wang Houwen
        Issue 1, (1994)
        摘要：Transport properties of the deflecting System with two magnets are studied by the transfer matyics method, and zero space dispersion relation is deduced. Due to good focusing and dispersing performances and more sample constrction, the system is more suitable for medical TW Linac.  
        关键词：Medical TW Linac;90° bend two- magnet system;Zero dispersion   
        9
        |
        36
        |
        2
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408824 false
        发布时间：2021-04-09
      • Issue 1, (1994)
        摘要：A method for assaying Th and U by mixing extyaction agent and liquid scintillation combined with α spectrum analysis was introduced. The method has such advantages as simple sample preparation, high detection efficiency for α- particles（～ 98%） and low background counting（< 10 cpm）. The analytical error and the detection limit is < 5% and 5mg/l respectively.  
        关键词：Solvent extraction;Liquid scintillation;α spectrum analysis;Thorium;Uranium   
        10
        |
        100
        |
        6
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8408831 false
        发布时间：2021-04-09
      0