SCIENTIFIC-METHODICAL APPROACHES TO MEASUREMENTS OF CHARACTERISTICS OF PHYSICAL AND CHEMICAL PROCESSES IN CONDENSED MEDIA EXPOSED TO LASER RADIATION AND THEIR EXPERIMENTAL REALIZATION

Tsipilev V. P.; Oleshko V. I.; Yakovlev A. N.; Alekseev N. A.; Nozdrina O. V.; Mazur M. A.

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SCIENTIFIC-METHODICAL APPROACHES TO MEASUREMENTS OF CHARACTERISTICS OF PHYSICAL AND CHEMICAL PROCESSES IN CONDENSED MEDIA EXPOSED TO LASER RADIATION AND THEIR EXPERIMENTAL REALIZATION

机译：凝聚到激光辐射的凝聚介质中物理和化学过程特征测量的科学近似的方法及其实验实现

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Scientific-methodical approaches to a study of nonlinear physicochemical processes are considered and an experimental setup intended for investigation of nonlinear physical and chemical processes accompanying irradiation of solids of various classes (including energetic materials) by UV, visible, and IR laser radiation is described. The possibility of synchronous multi-parameter measurements of the amplitude, spectral, kinetic, and spatial characteristics of the near-surface and bulk luminous laser plasma, solid-phase luminescence, acoustic pulses formed in the bulk of the samples, and morphology of residual damages has been demonstrated with a nanosecond time resolution. The energy density on the irradiated target surfaces varied from fractions of mJ/cm(2) to 10(4) J/cm(2) depending on the problem to be solved. The spectral range recorded for one irradiation pulse was 200-1100 nm, the spectral resolution was similar to 1.5 nm, and the spatial resolution was similar to 10 mu m. A pressure pulse formed in the sample volume was recorded by an acoustic sensor with sensitivity of 0.15 V/bar and temporal resolution of similar to 5 ns.

机译：考虑了对非线性物理化学方法研究的科学方法的方法，并进行了旨在通过UV，可见和IR激光辐射伴随各种类（包括能量材料）固体照射的非线性物理和化学方法的实验装置。近表面和散装光激光激光等离子体的幅度，光谱，动力学和空间特性同步多参数测量的可能性，在样品的大部分样品中形成的固相发光，声脉冲，以及残留损伤的形态已经用纳秒时间分辨率进行了证明。根据要解决的问题，照射靶表面上的能量密度因MJ / cm（2）至10（4）至10（4）×cm（2）的级分而变化。记录为一个照射脉冲的光谱范围是200-1100nm，光谱分辨率类似于1.5nm，并且空间分辨率类似于10μm。在样品体积中形成的压力脉冲由声学传感器记录，灵敏度为0.15 V / BAR和类似于5ns的时间分辨率。

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来源
《Russian physics journal》 |2019年第5期|共9页
作者
Tsipilev V. P.; Oleshko V. I.; Yakovlev A. N.; Alekseev N. A.; Nozdrina O. V.; Mazur M. A.;
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作者单位

Natl Res Tomsk Polytech Univ Tomsk Russia;

Natl Res Tomsk Polytech Univ Tomsk Russia;

Natl Res Tomsk Polytech Univ Tomsk Russia;

Natl Res Tomsk Polytech Univ Tomsk Russia;

Natl Res Tomsk Polytech Univ Tomsk Russia;

Natl Res Tomsk Polytech Univ Tomsk Russia;

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正文语种 eng
中图分类物理学;
关键词
laser irradiation; inert and energetic materials; laser plasma; hot spots; explosive luminescence; spectroscopy; optoacoustics;

机译：激光辐照;惰性和能量材料;激光等离子体;热点;爆炸发光;光谱;光声;

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SCIENTIFIC-METHODICAL APPROACHES TO MEASUREMENTS OF CHARACTERISTICS OF PHYSICAL AND CHEMICAL PROCESSES IN CONDENSED MEDIA EXPOSED TO LASER RADIATION AND THEIR EXPERIMENTAL REALIZATION

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