1996年 第13卷 第3期
一种缺中子新同位素２３５Ａｍ通过２３８Ｐｕ（ｐ，４ｎ）２３５Ａｍ反应而产生．产物借助Ｈｅ－ｊｅｔ系统的传输，快化学分离以及γ、Ｘ射线和γ－Ｘ（γ）符合测量等得到鉴别，测得其半衰期为１５±５ｍｉｎ． A new neutron deficient isotope 235 Am was produced via 238 Pu(p,4n) 235 Am reaction. The products were identified by means of the transporting of He jet system, separating of rapid radiochemical method and measuring of γ and X rays as well as X γ coincidence. The measured half life of 235 Am is 15±5min.
核物质中的夸克凝聚是在夸克层次研究核物理遇到的基本问题之一，特别是，它与核环境下强子性质的研究紧密相关．近年来，国内外对此开展了若干研究．简要介绍这方面的研究现状和指出存在的问题． Quark condensates in nuclear matter are one of the key problems for the study of nuclear physics at quark lever, and it is related closely to a deeper understanding of the properties of hadrons in nuclear matter. Recently we have seen some investigations made of the above subject. The present status and open problems are described in this paper.
从理论和实验两个方面综述了原子核的重离子集团衰变这一前沿领域的发展和现状．考虑了在兰州重离子加速器国家实验室开展对Ｚ＝５６～６４，Ｎ＝５８～７２核区核素的α和重离子集团衰变研究的设想． The theoretical and experimental decay studies of heavy particle radioactivity are reviewed. The experimental studies of α and heavy particle radioactivity in the region of Z =56～64 and N =58～72 is proposed at HIRFL.
叙述怎样用Ｌａｎｇｅｖｉｎ方程研究重离子引起的熔合裂变反应．主要内容包括从Ｆｏｋｋｅｒ－Ｐｌａｎｅｋ方程到Ｌａｎｇｅｖｉｎ方程，重离子熔合反应的Ｌａｎｇｅｖｉｎ描述和组合动力学统计模型（ＣＤＳＭ）． This paper described how Langevin equation is applied to the fusion and fission reactions induced by heavy ions. It includes the transformation of a Fokker Planck equation to a Langevin equation, Langevin description of heavy ion induced fusion reaction and a combined dynamical statistical model.
简要介绍利用重离子冷却储存环开展高离化态重离子研究的最新进展，着重介绍高离化态重原子研究的最新状况，以及高离化态重离子在核物理、天体物理和原子物理等交叉学科研究中的应用． The recent progress of study of high ionized heavy ions in the world are presented briefly by using heavy ion cooling stored ring. Especially, the recent status of study of high ionized heavy atoms, as well as the application of study of high ionized heavy ions in cross subject of nuclear physics, astrophysics and atomic physics are described.
简介了中高能核反应中四个基本问题方面的新进展．它们是热化与统计热平衡、气化与相变、瞬时碎裂、阈下Ｋ＋产生与Ｋ＋／π＋增强． The new development of four problems in intermediate and high energy reaction is breifly commented. The four problems are thermalization and statistically thermal equilibrium, evaporization and phase transition, simultaneous breakup and subthreshold K +production and K +/ π + enhancement.
简述利用核技术快速无损选择高蛋白质含量谷物种子的原理和技术． The principle and technique, which the protein content in the seeds of grain was measured by using the nuclear reaction technique, was briefly described in this paper.
描述了１４ＭｅＶ快中子治疗仪的束流特性，它包括：中子能谱、快中子与生物的相互作用、吸收剂量与深度的关系、吸收剂量与生物效应等．并同其他类型的中子治疗仪进行了比较． In this paper, the beam characteristic of 14MeV neutron therapy facility is described, which includes neutron energy spectrum, interaction between fast neutron and organism, relation between absorption dose and depth, relation between absorption dose and biological effect and so on. The properties of this facility with other type facility are compared.
介绍电子束射线辐照处理燃烧废气中ＳＯ２及氮的氧化物ＮＯｘ的新方法，并与传统方法进行了比较． This paper introduces a new method of eletron beam radiation treatment of SO 2 and NO x in stack gases, with which the traditional methods are compared.
在考虑了中能重离子反应出射中子天空反射效应的基础上，以４×１０１１ｉｏｎｓ／ｓ、１００ＭｅＶ／ｕ１２Ｃ＋Ｃｕ（厚靶）反应为例，计算出重离子物理实验小区需设置的顶部屏蔽混凝土厚度ｄ＝１．１ｍ． Based on considering the skyshine and the distribution of neutrons emitted from the reaction of 100MeV/u 12 C+Cu, the concrete shielding thickness of overhead shielding of the small experimental area in the physical experimental hall is calculated, which would be about 1.1m.
简述了中国实验快堆的技术原则、设计特点和工程技术方案．该堆采用铀钚氧化物燃料，奥氏体３１６（Ｔｉ）不锈钢为燃料包壳、堆芯结构材料和钠冷池式结构．同时，在堆芯设置了非能动的余热排出系统．该设计方案在技术上是合适、可行的，在安全上是有保障的． This paper outlines briefly technical, principle,design feature and technical scheme of CEFR. In CEFR, the fuel is plutonium uranium mixed dioxide (Pu.U)O 2. The material of fuel clad and core structure is stainless steel 316(Ti) and sodium cooling pool type configuration and the passive residual heat removal system is installed in core. This design scheme is feasible technolugically and its safety is trusty.