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X-ray spectra of plasma radiation from laser induced low-power vacuum discharge

机译：激光诱导低功率真空放电等离子体辐射的X射线光谱

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摘要

The x-ray spectra of plasma radiation in the wavelength range 30-300 angstrom are studied. The radiation is emitted from plasma of a vacuum discharge with storage energy less than 30 J that is initiated on an Al or Fe cathode by beam from neodymium laser with a power density up to 10(12) W cm(-2). It is shown that both the spectral composition and intensity of radiation of hot micropinch plasma that is formed in the cathodic jet are determined by the set of the discharge and the laser pulse characteristics. By optimizing these characteristics, a mode of the discharge operation is attainable, in which a significant portion of the radiation energy is located in the long-wave band of the quasi-continuum (230-270 angstrom and 160-200 angstrom for Al and Fe cathodes, respectively). That makes it possible to treat such a discharge as an intense source of narrow-band soft x-ray radiation.
机译：研究了波长范围内的等离子体辐射的X射线光谱。 从真空放电的等离子体发射辐射，储存能量小于30 j，该储存能量由来自钕激光器的梁在Al或Fe阴极上发起，功率密度高达10（12）W cm（-2）。 结果表明，在阴极射流中形成的热微氨基等离子体的光谱组成和辐射强度由放电和激光脉冲特性的组来确定。 通过优化这些特性，可以实现放电操作的模式，其中辐射能量的大部分位于准连续体的长波带（230-270埃和160-200埃为AL和Fe 分别是阴极）。 这使得可以将这种放电视为窄带软X射线辐射的强源。

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