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A. Bezdetko P. Gladkikh S. Gokov V. Grevtsev A. Dovbnya A. Zelinsky V. Ivashchenko A. Kalamayko I. Karnaukhov D. Korzhov V. Kushnir V. Lyashchenko V. Mitrochenko A. Mytsykov A. Ryezayev V. Trotsenko V. Skyrda A. Shcherbakov 《Physics of Particles and Nuclei Letters》2014,11(5):615-619
The work is dedicated to one of the systems of the NESTOR X-ray generator. The injection system is at the highest stage of readiness after the magnetic system. Structurally, the injection system can be represented as an injector (linear accelerator), channel of parallel transportation (transport channel), channel of the beam entry into the vacuum chamber, and pulsed inflector. All equipment has been tested, and the beam passed through all the components in the volume of the storage ring. 相似文献
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Deep underwater high energy neutrino detection is a very promising field in both elementary particle physics and astrophysics. On one side, the energy range of ground based accelerators cannot be extended much more respect to the present, leaving only astronomical sources for future investigations. In the astrophysics field, neutrinos are the tool to explore further in the universe due to their low interactions. By the same token, the experimental problems for a neutrino detector are enormous. The Cherenkov effect is practically the only possible tool, because it uses sea water both as shield and as detector. NESTOR is the first step toward a full fledged deep underwater neutrino experiment. While its area, of the order of 10000 m**2, cannot hope to identify all possible celestial sources, it is nevertheless a necessary step toward the “Km**3” experiment. The first deployment tests have already been performed, proving the feasibility of the mechanical design, and the electronics is almost completely ready. Additional tests are scheduled for this autumn and next year will see a relevant part of the experiment installed at the bottom of the Ionian sea. 相似文献
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I. M. Karnaukhov D. E. Korzhov V. N. Lyaschenko A. O. Mytsykov V. I. Trotsenko 《Physics of Particles and Nuclei Letters》2014,11(5):599-602
The work considers the control system of magnetic components of the NESTOR Compton back-scattering X-ray generator. The control system allows integration of the control and visualization modules of other subsystems of the generator. The described system was experimentally tested, and during the test a beam was inputted into the physical volume of the NESTOR storage element. 相似文献
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Yu. A. Shitov 《Physics of Atomic Nuclei》2006,69(12):2090-2095
The NEMO-3 detector has been taking data in the Fréjus underground laboratory (LSM, France) since February 2003 and is devoted
to the search for neutrinoless double-beta decay (0νββ). After 389 effective days of data collection from February 2003 until September 2004 (Phase I), no evidence for neutrinoless
double-beta decay was found from ∼7 kg of 100Mo and ∼1 kg of 82Se. The corresponding limits for the half-lives are T
1/2(0νββ) > 4.6 × 1023 yr for 100Mo and T
1/2(0νββ) > 1.0 × 1023 yr for 82Se (90% C.L.). They lead to the following limits for the effective Majorana neutrino mass: 〈m
ν〉 < 0.7–2.8 eV for 100Mo and 〈m
ν〉 < 1.8–4.9 eV for 82Se. The half-lives of the two-neutrino double-beta decay (2νββ) have been measured for 100Mo, 82Se, 116Cd, 150Nd, and 96Zr and reported here as well.
on behalf of NEMO Collaboration
The text was submitted by the author in English. 相似文献
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间接驱动方式具有提供更高冲击波压力的潜力,对冲击波物理研究来说是一种很好的驱动方式.针对间接驱动下X射线离化对透明窗口造成的致盲问题,提出了新的"三明治"靶型结构,以完成间接驱动下冲击波实验.该靶型可以用两种方法避免致盲效应对实验的干扰.一种方法是从时间上避开致盲效应,使致盲效应与冲击波测量区错开,从而获得冲击波数据.另一种方法是从强度上屏蔽X射线,将X射线阻挡在透明材料之前,使其不能产生致盲效应.对单冲击实验而言,用增加烧蚀层厚度的方法,将X射线离化效应与冲击波信号从时间上错开,获得了蓝宝石和石英晶体中冲击波实验的结果.用增加阻挡层的方法,获得了间接驱动条件下石英晶体和聚苯乙烯材料中的冲击波实验结果.提出的"三明治"靶型,为间接驱动条件下状态方程和冲击波调速技术提供了技术支持.
关键词:
冲击波
光学诊断
离化效应
干涉仪 相似文献
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2003年的诺贝尔物理奖授予了低温物理领域的三位物理学家,他们是Alexei A、Abrikosov(阿布里柯索夫),Vitaly L.Ginzburg(京茨堡)以及Anthony J.Leggett(莱格特),此奖用以表彰前两者在超导电性方面的贡献,后者为在超流方面作出的贡献.大家知道,自然界中的微观粒子服从量子力学规律; 相似文献
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通过对Franck-Hertz实验中的电子能量分布及其动态变化的分析,对Franck-Hertz曲线的规律性波动现象作出了直观的解释.对充汞Franck-Hertz管,考虑了电子的额外加速程、汞原子的多能级共同激发以及电子与汞原子非弹性碰撞后电子具有剩余能量等因素,对Franck-Hertz实验的物理过程有了更全面的了解,并对Franck-Hertz曲线峰间距随加速电压增大而持续变大的现象作出了解释. 相似文献
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取1支大试管,配上合适胶塞,在胶塞下悬挂1个蜂鸣器(可用生日贺卡上的音乐 IC片及蜂鸣器),联接好电源,待用. 实验时,先向试管中注入少量水,然后加热试管中的水. 此时不要盖紧胶塞,待水沸腾,水蒸气充满容器,空气大部分被排出大试管后,小心盖紧胶塞. 这时能清楚听见蜂鸣器的音乐声,停止加热后声音逐渐减弱,至水冷却后该声音听不见. 这是由于试管内水蒸气冷凝后使试管内接近真空状态,所以几乎听不见蜂鸣器的响声,从而说明声音的传播需要以空气等物质为媒质,在真空中不能传播.图1 实验装置图声学小实验@陈少康$珠海市第二中学!广东珠海5190… 相似文献
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灵敏电流计实验中的温差电效应 总被引:2,自引:1,他引:1
由于光点式灵敏电流计内部存在照明光源,系统很鸡避免温差,产生温差电流,从而引起光标附加偏转,本文以测量灵敏电流计常量和内阻为例,表明了温差电动势的存在,介绍了消除其影响的方法。 相似文献
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2003年度诺贝尔物理学奖漫谈 总被引:2,自引:0,他引:2
简要介绍了奖金获得者Alexei A Abrikosov,Vitaly L Ginzburg和Anthony J Leggett在超导体和超流体理论方面开拓性的贡献,特别着重于他们所发展的理论的背景和重要性,文章还简要谈及2003年度诺贝尔物理学奖给我们带来的启示。 相似文献