TITLE

Time-resolved electron shadowgraphy for 300 ps laser ablation of a copper film

AUTHOR(S)
Yasuaki Okano, S.B.; Yoichiro Hironaka, S.B.; Nakamura, Kazutaka G.; Ken-ichi Kondo, Kazutaka G.
PUB. DATE
August 2003
SOURCE
Applied Physics Letters;8/25/2003, Vol. 83 Issue 8, p1536
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Time-resolved electron shadowgraphy measurement was performed in infrared 300 ps laser ablation of a copper film in order to investigate expanding plasma into vacuum with space-charge separation. The probe-electron pulse was generated by intense femtosecond laser irradiation on a tungsten bulk target. Time-resolved electron shadowgraphs showed evolving “bright” and “shadow” plumes with expanding speeds of 970 and 110 km/s, when the laser intensity was 980 G W/cm[sup 2]. These are attributed to be space-charge separation field and ion plume, respectively. © 2003 American Institute of Physics.
ACCESSION #
10603846

 

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