Nitrogen capillary plasma as a source of intense monochromatic radiation at 2.88 nm

0435978 - ÚFP 2015 RIV NL eng J - Journal Article
Vrba, Pavel - Vrbová, M. - Zakharov, S.V. - Zakharov, V.S. - Jančárek, A. - Nevrkla, M.
Nitrogen capillary plasma as a source of intense monochromatic radiation at 2.88 nm.
Journal of Electron Spectroscopy and Related Phenomena. Roč. 196, October (2014), s. 24-30. ISSN 0368-2048. E-ISSN 1873-2526
R&D Projects: GA ČR GAP102/12/2043; GA MŠMT(CZ) LG13029
Grant - others:GA MŠk(CZ) CZ.1.07/2.3.00/20.0092
Institutional support: RVO:61389021
Keywords : Capillary Z-pinch * Water window radiation source * RHMD Code Z*
Subject RIV: BH - Optics, Masers, Lasers
Impact factor: 1.436, year: 2014
http://dx.doi.org/10.1016/j.elspec.2013.12.015

Capillary discharge plasma related to our laboratory device is modeled and the results are compared with experimental data. Time dependences of selected plasma quantities (e.g. plasma mass density, electron temperature and density and emission intensities) evaluated by 2D Radiation-Magneto-Hydro-Dynamic code Z* describe plasma evolution. The highest output pulse energy at 2.88 nm wavelength is achieved for nitrogen filling pressure ~100 Pa. The estimated output energy of monochromatic radiation 5.5 mJ.sr−1 (~1014 photons.sr−1) corresponds properly to observe experimental value ~ 3 × 1013 photons.sr−1. Ray tracing inspection along the capillary axis proves an influence of radiation self-absorption for the investigated wavelength. The spectra, evaluated using the FLY code, agree to the measured ones.
Permanent Link: http://hdl.handle.net/11104/0239765