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Instantaneous characteristics of excited atom state 5s' 4D7/2 in the copper plasma induced by laser

Liu Shi-Bing Liu Yuan-Xing He Run Chen Tao

Instantaneous characteristics of excited atom state 5s' 4D7/2 in the copper plasma induced by laser

Liu Shi-Bing, Liu Yuan-Xing, He Run, Chen Tao
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  • Received Date:  30 October 2009
  • Accepted Date:  23 November 2009
  • Published Online:  05 April 2010

Instantaneous characteristics of excited atom state 5s' 4D7/2 in the copper plasma induced by laser

  • 1. Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China

Abstract: The formation of excited atom state 5s' D7/2 and its transition process in the copper plasma induced by nanosecond pulse laser are studied by the time-resolved spectrum technology. The experimental results indicate the recombination of electron and ion and the collisions among particles each play a dominent role in forming excited atom state 5s'D7/2 at different tims during its evolvement. When the collisions among particles are severe, the excited atom state 5s' D7/2 mainly transits to low energy atom state 4p' 4 Fo9/2. 500 ns after the peak of laser pulse arriving at target surface, the excited state 5s'D7/2 transited to 4p' 4 Fo9/2 and 4p' 4 D7/2 with the same probabilities by emitting lines CuI465.11 nm and CuI529.25 nm respectively.

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