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新兴的加速器质谱技术(AMS),开拓了核技术应用的新领域。本文简述了加速器质谱技术的主要优点和发展过程,着重介绍了加速器质谱技术在核物理中的应用,其中包括:长寿命同位素半衰期的测量;核反应截面的测量;寻找奇异粒子和测量太阳中微子等实验及应用。 相似文献
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加速器质谱技术(AMS)又称超灵敏质谱技术,是在80年代发展起来的一种超微量核分析方法。它对有些同位素分析的丰度灵敏度达到10(-16),或者说可探测到104个原子,比普通质谱计的灵敏度高出8-9个数量级。 相似文献
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北京大学重离子物理研究所和技术物理系研制的加速器质谱计于1992年圆满建成并投入使用,在两年多的运行中,性能不断得到改进,并取得了大量的应用成果,简要介绍其性能特点,运行情况和应用概况。 相似文献
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宇宙成因核素 53Mn是一种非常理想的地貌演变研究工具。近年来, 随着加速器质谱(AMS)技术的不断发展, 人们已能够进行53Mn的高灵敏测量。介绍了53Mn在地球科学中的应用前景、 国际研究现状及中国原子能科学研究院目前正在开展的53Mn高灵敏AMS测量方法的研究。The determination of cosmogenic 53Mn concentrations found in terrestrial formations has many interesting applications for Earth Sciences. With Accelerator Mass Spectrometry (AMS) it should be possible to detect minute amounts of 53Mn. The situation of international research of 53Mn AMS measurement and applications are presented. The AMS measurement method of 53Mn at China Institute of Atomic Energy and its applications prospect are to be explored. 相似文献
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介绍了利用加速器质谱技术在核物理与核天体物理中的应用研究工作.包括放射性核素半衰期的测定、核反应截面的测量、超重元素的寻找、宇宙射线和太阳中微子性质等方面的研究工作.The application work which has been done and can be done in the nuclear physics and nuclear astrophysics using accelerator mass spectrometry is reviewed. The half-life measurement of long-lived radio isotopes, cross section measurement of nuclear reaction, searching for super heavy elements, cosmic study and solar neutrino detection are the main components which have been discussed 相似文献
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加速器质谱(AMS) 由于其极高的测量灵敏度而广泛应用于核科学、生命科学、地球科学、环境科学和考古学等研究领域,同时,AMS还可以用来分析样品中的微量核素,是核科学领域的重要研究工具。目前,AMS研究的最新领域是U和Pu 等锕系元素的测量,在核保障、核监测及核试验沉降物示踪大气输运和表面沉积物的迁移等研究中也显示出了较大潜力。综述了AMS在核科学研究中的应用及研究现状,主要包括AMS在放射性核素半衰期的测定、核反应截面的测量等方面的研究进展。Accelerator mass spectrometry (AMS) is a promising method to provide extreme sensitivity measurements of the production yields of long-lived radioisotopes, which cannot be detected by other methods. AMS technique plays an important role in the research of nuclear physics, as well as the application field of AMS covered nuclear science and technology, life science, earth science, environmental science, archaeology etc. The newest AMS field is that of actinide, particularly U and Pu, isotopic assay with expanding applications in nuclear safeguards and monitoring, and as a modern bomb-fallout tracer for atmospheric transport and surface sediment movement. This paper reviews the applications of AMS in the research of nuclear energy and nuclear security including the research of half life of radionuclides, cross section of nuclear reaction. 相似文献
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北京大学加速器质谱计 总被引:1,自引:0,他引:1
北京大学重离子物理研究所和技术物理系研制的加速器质谱计于1992年圆满建成并投入使用.在两年多的运行中,性能不断得到改进,并取得了大量的应用成果.简要介绍其性能特点、运行情况和应用概况.The accelerator mass spectrometry studied by the Institute of Heavy Ion Physics and the Department of Technical Physics,Peking University,was successfully manufactured in 1992.In the two years routine operation,the machine performances have been improved and some application achievements have been obtained.In this paper feature of the machine,opeartion and some applications are given. 相似文献
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加速器质谱是近年来蓬勃发展的一种十分活跃的核分析技术,其应用涉及环境科学、地质学、核物理及天体物理、生物医学等多个领域。中国原子能科学研究院的加速器质谱装置自从1989年建立至今,已经对^36Cl,^10Be,^129I,^26Al,^79Se和^41Ca等多种核素进行了成功测量。介绍了中国原子能科学研究院的加速器质谱计系统、核素的测量原理及几种相关核素的成功应用。The Accelerator Mass Spectrometry facility at the China Institute of Atomic Energy was established in 1989. The measurement methods for interesting nuclides such as ^36Cl, ^10Be, ^129I, ^26Al, ^79Se and ^41Ca etc. have been established and studies on their applications have been carried out. The facility and some interesting applications are briefly introduced. 相似文献
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加速器质谱方法测量41Ca及其在生物医学中的应用 总被引:6,自引:2,他引:4
介绍了用AMS测量41Ca的方法及其在生物医学中的应用,以及中国原子能科学研究院目前开展4 1Ca的AMS测量及其应用研究的情况.Ca(T 1/2 =1.0×10 5 a) as a tracer, confined with Accelerator Mass Spectrometry (AMS) method and its applications are reviewed. Measurement of 41 Ca with HI-13 tandem AMS system at the China Institute of Atomic Energy is also introduced. The measurement of 41 Ca used for studying mechanism of cancer caused by carcinogenic substances and mechanism of Ca supplement in human body diseases are being developed in collaboration with Department of Occupational Health, Beijing Universit... 相似文献
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236U是一种长寿命放射性核素, 其半衰期为T1/2=2.342(3)×107 a, 在自然界的含量极微, 天然铀中 236U/238U的原子比约为~10-14。 目前, 对于236U及其测量的研究报道较少。首先介绍了236U的产生, 并对地球中 236U的总量进行了估算。 概述了236U测定在亿年级中子注量率积分评估、 核环境和核活动监测, 以及地质学等领域中的重要应用。 最后,对国内外加速器质谱(AMS)测量236U的状况进行了综述,报道了中国原子能科学研究院AMS小组通过对同位素干扰鉴别的多方面研究, 初步建立了236UAMS测量方法。 236U is a longlived radionuclide with half life of 2.342(3)×107 a. The ratio of 236U/238U is about 10-14 in the natural Uranium. The origin and production of 236U in globe are introduced and estimated in this paper,respectively. The major applicationsion of 236U as a 100 million year neutron flux integrator,as a “fingerprint” for monitoring nuclear environment and nuclear activity,and as a tracer in geological studies are briefly summarized. The accelerator mass spectrometry(AMS) measurement of 236U in the world and the research on HI 13 tandem accelerator at China Institute of Atomic Energy(CIAE) is also mentioned in this paper. 相似文献
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