Spectral dynamics of soft X-ray emission in dual-laser-produced medium-Z plasma
| Autor: | Hayato Ohashi, Akira Sasaki, Gerry O'Sullivan, Takeo Ejima, Masaharu Nishikino, Tadashi Hatano, Goki Arai, Takeshi Higashiguchi, Hiroyuki Hara, Chihiro Suzuki, Shinichi Namba |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Quantum optics Zirconium Microscope Materials science Physics and Astronomy (miscellaneous) Astrophysics::High Energy Astrophysical Phenomena Dynamics (mechanics) General Engineering General Physics and Astronomy chemistry.chemical_element Context (language use) 02 engineering and technology Plasma 021001 nanoscience & nanotechnology Laser 01 natural sciences law.invention chemistry law Attenuation coefficient 0103 physical sciences Atomic physics 0210 nano-technology |
| Zdroj: | Applied Physics B. 124 |
| ISSN: | 1432-0649 0946-2171 |
| Popis: | Laser-produced medium element plasma sources are being considered as strong candidates for in vivo photographic imaging of biological samples in laboratory-scale water-window soft X-ray microscopes. We explored spectral changes in the emission from dual-laser-produced zirconium (Zr) plasmas in the water-window soft X-ray spectral region. The emission was enhanced at a delay time of 5 ns between the pre- and main-laser pulses and found to possess a source size of $$38\,\upmu \hbox {m }\times 68\,\upmu \hbox {m}$$ very similar to that obtained without any pre-pulse. We also investigated the decrease in emission observed at longer delay times, in the context of the collisional-radiative (CR) model-calculated absorption coefficient. |
| Databáze: | OpenAIRE |
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