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相关概念视频

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In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an optical microscope—developed the first prototype of the electron microscope. This development led to the development of the field of electron microscopy. In the transmission electron microscope (TEM), electrons are produced by a hot tungsten element and accelerated by a potential difference in an electron gun, which gives them up to 400...
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Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
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基于激光的100 GeV电子加速方案用于子生产.

J D Ludwig1,2, S C Wilks3, A J Kemp3

  • 1Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94551, USA. josh_ludwig@live.com.

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研究人员建议使用激光唤醒场加速 (LWFA) 建立一个紧的子源. 这种新的方法可以使高能射线用比目前可能的小得多的加速器实现高能射线.

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科学领域:

  • 粒子物理学 粒子物理学
  • 加速器物理学的物理学
  • 等离子体物理学的物理学

背景情况:

  • 高能量的子为放射学提供了独特的深度透能力.
  • 传统的子来源依赖于大型的GeV-TeV粒子加速器.
  • 激光唤醒场加速度 (LWFA) 提供了更高的加速度梯度,使紧的加速器成为可能.

研究的目的:

  • 提出并模拟一个紧的子源概念.
  • 为了利用LWFA实现高效的电子加速.
  • 为了从模拟的电子束中估计子产量.

主要方法:

  • 自相一致的粒子在细胞 (PIC) 模拟.
  • 带有指导通道的全光激光唤醒场加速.
  • 分析电子能量光谱以估计子产量.

主要成果:

  • 在一个6米加速器中实现了100GeV的电子能量.
  • 为高能电子展示了一个紧的,单阶段的LWFA.
  • 对高能和高流量子生产的估计潜力.

结论:

  • 拟议的基于LWFA的加速器对于一个紧的子源来说是一个可行的概念.
  • 与高平均功率激光技术的集成是实用源的关键.
  • 这项技术可以彻底改变子放射学和相关领域.