skip to main content
Tipo de recurso Mostra resultados com: Mostra resultados com: Índice

Investigations of laser-induced plasma in air by Thomson and Rayleigh scattering.(Report)

Zhang, Hantian ; Wu, Yi ; Sun, Hao ; Yang, Fei ; Rong, Mingzhe ; Jiang, Fengfeng

Spectrochimica Acta Part B: Atomic Spectroscopy, 2019, Vol.157, p.6 [Periódico revisado por pares]

Texto completo disponível

Citações Citado por
  • Título:
    Investigations of laser-induced plasma in air by Thomson and Rayleigh scattering.(Report)
  • Autor: Zhang, Hantian ; Wu, Yi ; Sun, Hao ; Yang, Fei ; Rong, Mingzhe ; Jiang, Fengfeng
  • Assuntos: Plasma Physics – Analysis ; Plasma Physics – Investigations ; Lasers – Analysis ; Lasers – Investigations
  • É parte de: Spectrochimica Acta Part B: Atomic Spectroscopy, 2019, Vol.157, p.6
  • Descrição: Keywords Laser-induced plasma; Thomson scattering; Rayleigh scattering; Shockwave Highlights * Spatially resolved measurement of electron number density and temperature. * Shockwave in the radial direction poorly agrees with the Taylor-Sedov model. * Detailed analysis for the generation and development of toroidal structure. Abstract Laser Thomson scattering and Rayleigh scattering methods were applied to investigate the dynamics of laser-induced plasmas in atmospheric air. Laser-induced plasma was generated by a 1064 nm, 200 mJ Nd: YAG laser. Another nanosecond Nd: YAG laser (532 nm, 50 mJ) was used as the probe laser. The temporally and spatially resolved electron number density and temperature distributions of the laser-induced plasma were determined from the Thomson scattering spectra. From 1 [mu]s to 21 [mu]s after plasma generation, the electron number density around the centre of the plasma decreased from 4.96 x 10.sup.23m.sup.-3 to approximately 1.1 x 10.sup.21m.sup.-3, while the electron temperature dropped from approximately 51,500 K to 6900 K. The plasma images and the measured distribution of the electron number density and temperature indicated the formation of a toroidal structure approximately 18 [mu]s after plasma generation. The Rayleigh scattering results show that the Taylor-Sedov model cannot well describe the early evolution of the shockwave in radial directions. Author Affiliation: State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an Shaanxi 710049, People's Republic of China * Corresponding author. Article History: Received 16 August 2018; Revised 10 May 2019; Accepted 13 May 2019 Byline: Hantian Zhang, Yi Wu [wuyic51@mail.xjtu.edu.cn] (*), Hao Sun, Fei Yang, Mingzhe Rong, Fengfeng Jiang
  • Idioma: Inglês

Buscando em bases de dados remotas. Favor aguardar.