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The forward-backward multiplicity and correlations of a target evaporated fragment (black track particle) and target recoiled proton (grey track particle) emitted from 150 A MeV 4He, 290 A MeV 12C, 400 A MeV 12C, 400 A MeV 20Ne and 500 A MeV 56Fe induced different types of nuclear emulsion target interactions are investigated. It is found that the forward and backward averaged multiplicity of a grey, black and heavily ionized track particle increases with the increase of the target size. The averaged multiplicity of a forward black track particle, backward black track particle, and backward grey track particle do not depend on the projectile size and energy, but the averaged multiplicity of a forward grey track particle increases with an increase of projectile size and energy. The backward grey track particle multiplicity distribution follows an exponential decay law and the decay constant decreases with an increase of target size. The backward-forward multiplicity correlations follow linear law which is independent of the projectile size and energy, and the saturation effect is observed in some heavy target data sets. 相似文献
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本文从刚体作纯滚动时的无滑条件出发,根据静摩擦力的方向与物体相对运动趋势相反的特点,推出了判断纯滚动刚体所受静摩擦力方向的一种新方法。 相似文献
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Evidence of self-affine multiplicity fluctuation of particle production in 84Kr--emulsion interactions at 1.7 A GeV
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Self-affine multiplicity fluctuation is investigated by using the two-dimensional factorial moment methodology and the concept of the Hurst exponent (H). Investigation on the experimental data of compound particles and target fragments emitted in 84 Kr-AgBr interactions at 1.7 A GeV reveals that the best power law behaviours are exhibited at H=0.7 and 0.6 respectively, and the data for shower particles produced in 84 Kr-emulsion interactions at 1.7 A GeV indicate that the best power law behaviour occurs at H=0.6, all of which show the self-affine multiplicity fluctuation patterns. The multifractality and the non-thermal phase transition occurring during producing the compound particles, the target fragments, and the shower particles in the 84 Kr-AgBr interaction and the 84 Kr-emulsion interaction are also discussed. The multifractality is observed during producing compound particles, target fragments, and shower particles. In the target fragment production, an evidence of non-thermal phase transition is observed, but in the shower particle production and the compound particle production, no evidence of non-thermal phase transition is observed. 相似文献
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Self-affine multiplicity scaling is investigated in the framework of a two-dimensional factorial moment methodology using the concept of the Hurst exponent (H). Analyzing the experimental data of target evaporated fragments emitted in ^84Kr-AgBr interactions at 1.7 AGeV revealed that the best power law behavior is exhibited for H = 0.3 indicating a self-arlene multiplicity fluctuation pattern. A signal of multifractality is also observed from knowledge of the anomalous fractal dimension dq extracted from the intermittency exponent aq of the anisotropic phase space scenario. 相似文献
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Self-affine Multiplicity Fluctuation of Slow Particles in 16O-AgBr Collisions at 3.7 A GeV
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We study the slow particles in 160-AgBr collisions at 3.7A GeV in nuclear emulsion with the method of twodimensional factorial moments using the Hurst exponent. Our investigation reveals the power law behaviour, exhibited in self-affine analysis, better than that in self-similar analysis. This work shows a clear evidence of self-affine target fragmentation. 相似文献
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李惠玲 《玉林师范学院学报》2004,25(2):115-118
从高校非中文专业学生知识结构的现状出发,阐述加强人文素质教育的重要性;“中国古典文学鉴赏”课的课程特点及其在人文素质教育中所起的作用决定了在高校非中文专业学生中开设这门课程的必要性和可行性。 相似文献
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李惠玲 《玉林师范学院学报》2004,25(6):49-52
孔子“观”诗说的内涵井不限于诗歌的社会功用而首先是接受主体为诗歌所感发而引起的审美愉悦乃至审美自得。从审美接受的角度看,中国古典诗歌尤其讲究含蓄空灵,这就需要接受主体全身心,全灵魂的投入才能彻悟诗之美并获得审美自得。 相似文献
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李惠玲 《中国新技术新产品精选》2008,(10):125-125
随着企业生产规模的不断扩大,财务管理内容越来越多,管理项目越来越复杂、越细致,信息使用者所需要的财务数据信息也更加系统化、数字化。因此,依靠落后的管理手段已经无法满足客观实际的需求,如何改善企业财务管理的工作环境,提高财务管理的水平,在企业内部全面开展会计电算化已经成为当务之急。在此,就如何实现企业会计电算化,谈几点看法。 相似文献