[an error occurred while processing this directive]

Plasma Sci. Technol. ›› 2018, Vol. 20 ›› Issue (12): 125501-125501.doi: 10.1088/2058-6272/aad866

• 等离子体技术 • 上一篇    下一篇

Time-resolved evaluation of uranium plasma in different atmospheres by laser-induced breakdown spectroscopy

  

  • 收稿日期:2018-04-08 出版日期:2018-10-09 发布日期:2018-07-29

Time-resolved evaluation of uranium plasma in different atmospheres by laser-induced breakdown spectroscopy

Manjeet SINGH 1,2 and Arnab SARKAR 1,2   

  1. 1 Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
    2 Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
  • Received:2018-04-08 Online:2018-10-09 Published:2018-07-29
  • Supported by:

    This work was supported by the fund obtained from DAE—BARC (XII Plan).

Abstract:

This work reports spectroscopic studies of uranium containing plasma generated in air and argon environments. The 532 nm Q-switched Nd:YAG laser generates the optical breakdown plasma, which was recorded by a spectrometer and an intensified charge coupled device having a resolution of 25 pm. Neutral and ionized uranium lines in the wavelength range of 385.8–391.9 nm indicate significant width and shift variations during the first few microseconds. Electron temperature and density of the plasma are determined using the Boltzmann plot and the Saha–Boltzmann equation at various time delay. The study reveals the power law decay pattern of electron temperature and density, which changes to exponential decay pattern if large gate- width is used to acquire the signal, due to an averaging effect.

Key words: uranium, laser induced plasma, plasma parameter, temporal evaluation, electron temperature, electron density, LIBS

[an error occurred while processing this directive]