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Title: Temporal structure of X-ray radiation pulses of picosecond laser plasma

The shape of the X-ray pulse generated by picosecond laser plasma is experimentally studied. The unusual phenomenon was experimentally observed for the first time for targets made of moderate-heavy chemical elements, namely, the pulse of hard X-ray radiation generated by laser plasma at the laser radiation flux of ∼10{sup 18} W cm{sup -2} had a longer duration than the pulse of softer X-ray radiation. A simple kinetic model is suggested for explaining this fact. We have suggested a method for controlling the temporal shape of X-ray pulse emitted by laser plasma by varying the contrast of laser pulse. (interaction of laser radiation with matter)
Authors:
; ; ; ;  [1] ; ; ; ; ; ;  [2] ; ; ; ;  [3]
  1. Central Research Institute of Machine Building, Korolev, Moscow region (Russian Federation)
  2. Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow (Russian Federation)
  3. All-Russian Institute of Automatics, Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
22303374
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 43; Journal Issue: 9; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; EMISSION; HARD X RADIATION; LASER RADIATION; LASERS; PLASMA; PULSES; SHAPE; SOFT X RADIATION