高级检索

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

1993年  第10卷  第2期

新进展
近代物理所远离稳定线新核素合成和研究
罗亦孝
1993, 10(2): 1-4. doi: 10.11804/NuclPhysRev.10.02.001
摘要:
本文简述原子核物理的前沿领域之一—远离β稳定线新核素合成和研究的发展概况,并概要介绍近代物理研究所在该科研领域的主要进展。 This paper briefly describes the current status and progess in the synthesis and studiesof new nuclides far from the stability line, and reviews the major achievments in this research fieldmade in IMP.
新丰中子核素208Hg的发现
张立
1993, 10(2): 5-8. doi: 10.11804/NuclPhysRev.10.02.005
摘要:
新丰中子同位素208Hg,首次从30MeV/u的12C束轰击厚的天然铅靶反应产物中被鉴定出来,208Hg的鉴别基于二步化学分离及γ活性分析,第一步,借助于在本工作中所发展起来的熔化靶装置和一种特殊的热色谱技术,实现了Hg元素产物高效、高选择性的分离,第二步则是周期性的提取随着收集样品中的丰中子Hg同位素的β—衰变而生长起来的Tl元素,在提取的Tl样品中,观察到能量为2614.6keV、半衰期为191±10~4 50s的γ活性,它只能被指定为208Hg的β—衰变子体208Tl,将测得的208Hg半衰期42±23 12min与理论预言进行了比较。 The new neutron-rich isotope 208Hg was identified for the first time from the reactionproducts in a thick natPb target bombarded by a 30MeV/u 12C beam. The identification of 208Hg wasbased on two-step chemical separation and γ activity analysis. The first step was the release,separation and collection of Hg element products with a high efficiency and good selectivity bymeans of a melt target device and a special thermochromatographic technique developed in presentwork. The second step was..
高熔点重丰中子区新核素的合成和研究
袁双贵
1993, 10(2): 9-11. doi: 10.11804/NuclPhysRev.10.02.009
摘要:
本文介绍了高熔点重丰中子区新核素合成和研究的物理思想和技术路线及新同位素~(185)Hf和~(237)Th的首次合成及鉴别,并提出了今后的设想。 The physics idea and technical approach on synthesis and study of new refractoryheavy neutron--rich nuclides are introduced. The first synthesis and identification of new isotopes~(185)Hf and ~(237)Th are reported. A plan for coming work is presented.
质子滴线附近奇异核粒子衰变研究
徐晓冀
1993, 10(2): 12-16. doi: 10.11804/NuclPhysRev.10.02.012
摘要:
本文描述了对质子滴线附近奇异核研究的意义及近几年研究工作的进展,并对Tz=-3/2,A=4n+1和A=4n+3系列核的研究作了较详细的叙述,同时报告了我们对~(20)Na衰变研究的最新结果。 The significance and recent progress about studying the nuclei near the proton dripline is described. The description in detail is focused on the study of nuclei series with T_z=-3/2, A=4n+1 and A=4n+3. Also, the latest results on the decay study of ~(20)Na are reported.
兰州在线同位素分离器激光离子源的研制
赵之正, 罗亦孝, 谈锦封, 朱少飞, 尚仁成, 徐四大, 代毅, 张书明, 李少甫, 李彤
1993, 10(2): 17-21. doi: 10.11804/NuclPhysRev.10.02.017
摘要:
本文阐述了发展在线同位素分离器离子源的重要性,描述了激光离子源的优点、基本原理和研究现状,报告了兰州在线同位素分离器使用的激光离子源研究的设想和进展。 The importance of developing ion source used for on-line isotope separator forresearching nuclei far from stability line is explained. The merit, basic concept and studied currentstatus of laser ion source are discribed. The assumption and researching development of laser ionsource in Lanzhou on-line isotope separator are reported.
超铀区缺中子新核素的研究
郭俊盛, 李文新, 刘洪业, 甘再国, 雷怀宏
1993, 10(2): 22-24. doi: 10.11804/NuclPhysRev.10.02.022
摘要:
超铀核的合成历史及现状,产生缺中子超铀新核素可能的弹靶组合、生成截面的估计和裂变竞争的修正,氦喷咀传输系统及转动轮收集系统是主要的实验装置;而采用母女探测器系统,可以建立产物母子体的遗传关系,从而鉴别未知核。 The history and status of transuranium nuclei synthesis is described. Feasibleprojectile target combined to produce new neutron-deficient trasuranium nuclei is proposed.Production cross section is estimated and fission competition is corrected. Experimental set upincludes He-jet transport system and rotating wheel collection system. Mother-daughter detectorsystem can be used to identify unknown nuclei by genetic relation between mother and daughternuclei.
中能重离子反应近靶丰中子产物的生成截面放化研究
杨维凡, 赵之正, 李宗伟, 谢秀君, 孙秀荣, 牟万统, 秦芝, 胡志强, 杨永峰, 张立
1993, 10(2): 25-28. doi: 10.11804/NuclPhysRev.10.02.025
摘要:
用放射化学和γ谱学技术测量47MeV/u~(12)C同~(133)Cs、~(209)Bi和~(197)Au反应近靶产物的平均截面,得到了低靶产物碘、汞、金和铂的同位素产额分布曲线,发现靶核每减少一个质子其近靶产物最可几质量与靶核之差为4~5个质量单位,靶核(~(133)Cs和~(197)Au)削裂2个质子的产物~(131)I和~(195m)Ir的截面分别为0.47±0.20和0.60±0.10mb。 The average formation cross sections of the targetlike residuals produced in theinteractions of 47MeV/u ~(12)C with ~(133)Cs、~(209)Bi and ~(197)Au targets were measured by means of theradiochemical separtion and γ-spectroscopy techniques. The mass-yield curves of I、Hg、Au、Ptisotopes were obtained. It is found that the mass difference between the target nucleus and the mostprobable products for the targetlike isotopes is about 4~5 mass units, every time the target nucleusreduces a proton...
核物理
K+核散射中的反阴影效应
宁平治
1993, 10(2): 29-34. doi: 10.11804/NuclPhysRev.10.02.029
摘要:
核散射中罕见的反阴影效应在K~+介子与核的散射中出现了,1988~1990年BNL的系列实验确认了这一反常现象,然而,在核子层次上对此所作的各种理论解释几乎均告失败,因此人们不得不到夸克层次上寻找原因。 Unusual antishadowing appeared in K~+-nucleus scattering, which was reconfirmed byBrookhaven experiments in 1988~1991. Almost all of the conventional explanations of this effectat nucleon level are not successful. One has to search for new interpretations at quark level.
核天体物理实验研究概述
袁坚
1993, 10(2): 35-39. doi: 10.11804/NuclPhysRev.10.02.035
摘要:
本文简要地评述了宇宙演化核素合成研究的新发展,介绍了核天体物理实验特征和目前及未来的实验装置与实验技术,最后讨论和展望了当前感兴趣的几个核天体物理实验研究的课题。 The current state of nuclear astrophysics has been briefly reviewed. Someexperimental features and some current and future experimental techniques in the field of nuclearastrophysics are introduced. Finally, a synopsis of some key topies with experimental interest isdescribed.
放射性束加速与放射性束物理
黄业成
1993, 10(2): 40-45. doi: 10.11804/NuclPhysRev.10.02.040
摘要:
本文论述放射性束加速的原理、国际现状和相应学科的发展前景。 The principle and the present situation as well as the prospects corresponded to thephysics of RI Beams are described.
10B中子非弹性散射的理论计算
解文方
1993, 10(2): 46-49. doi: 10.11804/NuclPhysRev.10.02.046
摘要:
本文介绍了根据直接作用模型,采用DWBA方法,对~(10)B快中子非弹性散射的一组实验数据进行分析,获得了与实验数据符合较好的理论结果及一组参数,由所得参数,计算了入射中子能量为7.54~20MeV的~(10)B(n,n′)~(10)B~★0.717MeV激发态非弹性散射的积分截面和角分布,补充了实验所缺的数据。 In this paper, we analysed the experimental data of reaction cross sections induced byfast neutron on ~(10)B by using the direct nuclear reaction theory and the DWBA method. We obtainedthe results in agreement with experimental data and reported a set of parameters. Furthermore, byusing the set of parameters we have calculated systematically the inelastic integrated cross sectionsand angular distribution of ~(10)B(n, n′) ~(10)B 0.717 MeV excited state for incident neutron energiesfrom 7.54 MeV to 20.0 MeV. ...
核技术应用
辐射生物学模型研究的进展
张纯祥
1993, 10(2): 50-51. doi: 10.11804/NuclPhysRev.10.02.050
摘要:
根据1992年Catlinburg第11届微剂量学会议特点,本文简要介绍了放射生物学模型研究的进展。 This paper gives a report on progresses of radiobiological models according to theEleventh Symposium on Microdosimetry held in Gatlinburg, Tenneesee 1992.
高温超导体临界电流密度的辐照增强效应
唐政, 李世清, 王少阶
1993, 10(2): 52-56. doi: 10.11804/NuclPhysRev.10.02.052
摘要:
本文简要介绍了通过辐照手段提高高温超导体临界电流密度的方法和快中子、高能质子、高能重离子(如Sn离子等)对高温超导体辐照的主要实验,以及对其主要结果的分析和解释。 The irradiation method successfully used to enhance the critical current density (J_c)ofhigh temperature superconductor is introduced. Some results and analyses of the typical system likeYBCO superconductor are discussed in detail. The problems for further investigation and applicationare also discussed.
核能研究应用与核数据库
PIUS 600设计特点和开发现状
侯忠松
1993, 10(2): 57-59. doi: 10.11804/NuclPhysRev.10.02.057
摘要:
本文介绍了PIUS 600固有安全动力堆的主要设计特点和研究开发现状,提出了在我国研究和开发PIUS型动力堆的建议。 This paper introduced the main design feartures and R & D status of the inherentlysafe power reactor-PIUS 600. A proposal concerning PIUS type power reactor is put forward.
聚变堆设计中的原子物理问题
姚锦章
1993, 10(2): 60-64. doi: 10.11804/NuclPhysRev.10.02.060
摘要:
原子物理信息对聚变堆设计是很重要的,它决定了聚变堆点火条件的接近程度、等离子体燃烧的持续时间和反应堆的运行参数等,本文概述了其中的一些原子物理过程,它括粒子与表面相互作用。 Atomic physics information is of great importance to fusion reactor design, whichdefine the accessibility of the ignition regime, plasma burn duration and operational parametricspace of the reactor. We discuss the role of atomic physics in several of the most critical reactordesign areas and specify the required atomic physics information including interaction of plasmaparticles with solid surfaces.
世界核电站发展动态及其经济环境效益
王能明
1993, 10(2): 65-67. doi: 10.11804/NuclPhysRev.10.02.065
摘要:
本文扼要地介绍了世界核电站运行发展动态及所取得的经济和环境效益。 The trends in nuclear power station around world and its effect obtained on economyand enviroment are briefly introduced in this peper.
核数据评价的现状及发展趋势
赵志祥, 庄友祥
1993, 10(2): 68-69. doi: 10.11804/NuclPhysRev.10.02.068
摘要:
本文介绍了1992年10月在美国布鲁克海文国家实验室召开的核数据评价方法国际会议的情况。The International Symposium on Nuclear Data Evaluation Methodology is introduced,which was held in Brookhaven laboratory, USA in October, 1992.
原子核的基本常数及模型参数库
苏宗涤, 周春梅, 马丽珍, 葛智刚
1993, 10(2): 70-73. doi: 10.11804/NuclPhysRev.10.02.070
摘要:
参数库收集和评价了核的基本常数及模型参数,它对核理论模型计算是很重要的,中国评价核参数库包括了库数据文件及库程序系统两部分,本文介绍它的内容及其建库进展。 The library collected and evaluated the characteristic nuclear constants and theparameters for nuclear model, which is very important for nuclear theoretical calculation. Chinaevaluation nuclear parameter library (CENPL) consists of two parts, the data files and the libraryprogram system. The paper introduces the contents of the library and the process of its setting up.