共查询到20条相似文献,搜索用时 156 毫秒
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文章主要介绍了强磁场的发展状况和最近取得的一些进展,包括45T稳态磁场、60T长脉冲磁场、80T非破坏性脉冲磁场和百特斯拉级磁场,同时文章也介绍了强磁场的发展趋势和各磁场实验室的强磁场发展计划. 相似文献
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磁场处理对啤酒品质的影响 总被引:3,自引:0,他引:3
采用永磁场装置,将瓶装熟、鲜啤酒放在磁场中静置处理、实验结果表明,磁场具有促使酒体成熟和抗氧化的作用,经磁场处理的啤酒,双乙酰含量降低、口味谐调、柔和,无异味和老化味。 相似文献
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关于稳定磁场唯一性定理的再讨论 总被引:1,自引:1,他引:0
本文讨论了稳定磁场中B和H的唯一性定理, 指出了唯一确定场 B的边值条件是nx B| S或n x A|S) 而不是n· B|S,并指出 H并非恒为横场,从而对H的唯一性定理在提法上不同于B而有三种可能情况. 相似文献
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对大面积矩形强流电子束自磁场在无限长束模型和有限长束模型下作了计算,给出了磁场的强度分布,并计算了在自磁场作用下的束电子的运动轨迹。描述了电子束在传输方向距阴极6cm处的箍缩图样。计算中考虑了二极管电场力,忽略了膜及Hibechi对束流的散射效应。 相似文献
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讨论了银道面内的引力场强分布和太阳在银河系中所受引力与到银心距离r的关系,指出引力场强g并不是与r的平方成反比,这是由于银河系的大小和形状不能忽略造成的.强调了万有引力定律的适用条件. 相似文献
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SJ Rose 《Contemporary Physics》2013,54(2):109-121
In this paper we describe experiments conducted with high-power lasers that are attempting to replicate, for a very short time and in miniature, conditions found in the Sun. Experiments to date have reached conditions in the outer part of the Sun. To reach the Sun's centre requires compression of material to very much greater than solid density and heating to over ten million degrees. To achieve this, a new class of experiments and a new generation of high-power lasers are required. 相似文献
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The investigation was made of the dependence of the intensity of Tl, Ga, Mo, Mg, Mn, Sn, Bi, Ni, Zn, Pt and Au spectral lines and the plasma parameters (temperature T, electron concentration ne, degree of 6 ionnization α) from concentration of lithium additive. 相似文献
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We study the Cauchy problem for the Whitham modulation equations for increasing smooth initial data. The Whitham equations are a collection of one-dimensional quasi-linear hyperbolic systems. This collection of systems is enumerated by the genus g=0,1,2, ... of the corresponding hyperelliptic Riemann surface. Each of these systems can be integrated by the so-called hodograph transformation introduced by Tsarev. A key step in the integration process is the solution of the Tsarev linear overdetermined system. For each g>0, we construct the unique solution of the Tsarev system, which matches the genus g+1 and g–1 solutions on the transition boundaries. 相似文献
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Denis de Carvalho Braga 《Physics letters. A》2010,374(42):4316-4320
In this note we present an analytical study of the stability of the equilibria of the Rikitake system. We prove that the two non-hyperbolic equilibria of the Rikitake system are unstable for all positive values of the parameters. 相似文献
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The lightest supersymmetric particle (LSP) is a natural candidate for the cold dark matter of the universe. In this Letter we discuss how to test the mechanism responsible for the LSP stability at the LHC. We note that if R-parity is conserved dynamically one should expect a Higgs boson which decays mainly into two right-handed neutrinos (a “leptonic” Higgs) or into two sfermions. The first case could exhibit spectacular lepton number violating signals with four secondary vertices due to the long-lived nature of right-handed neutrinos. These signals, together with the standard channels for the discovery of SUSY, could help to establish the underlying theory at the TeV scale. 相似文献
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考虑弹丸在钢筋交汇处与钢筋直接发生作用的情况,提出了弹丸侵彻钢筋混凝土的近似模型。利用该模型得到了弹丸侵彻钢筋混凝土过程中弹丸的加速度时间历程。计算结果与实验结果符合较好。用该模型分析了不同配筋结构、配筋尺寸和网眼尺寸对侵彻深度和侵彻过程的影响,结果表明:弹丸从钢筋交汇处侵彻时,当弹丸动能相对较小时,随着网眼尺寸的减小,弹丸的大部分能量均消耗在侵彻第一层配筋结构中,当弹丸动能较大时,不管网眼尺寸多大,第一层配筋均只消耗掉弹丸的部分能量;配筋直径和网眼尺寸对侵彻深度的影响较大。 相似文献
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人造地球卫星与月亮在地心参考系中的受力分析 总被引:5,自引:3,他引:2
指出在全面分析被研究对象所受的力时,必须同时分析参照物所受的力,否则便漏掉了惯性力;地心参考系可以充当惯性系的空间范围是有限的. 相似文献
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Design and analysis of the tunnel connecting the beamcorridor and the spectrum hall of the CSNS 总被引:1,自引:0,他引:1
There is a tunnel connecting the beamcorridor and the target station in the spectrum hall in the CSNS project. The length of the tunnel is about 20 m. The shielding design of the tunnel is very significant for the persons working in the spectrum hall because the tunnel is not covered by soil for shielding. In order to reduce the dose rate at the exit of the cable ducts, we use the ISIS construction, which is designed with four turnings, as a reference for the tunnel design. The thickness of the shielding is obtained by a simulation with the Monte Carlo Code FLUKA. The result is compared with the data obtained with Moyer Mode and the reliability of the simulation is proved. This paper provides the basis for the design of the tunnel. 相似文献