2008/04/01 by Nobuhiro Sakamoto, Majid Masnavi, Mitsuo Nakajima +2
Engineering · Physics and Astronomy · #Atomic and Molecular Physics #Atomic physics #Capillary action #Electron #Laser #Laser-Plasma Interactions and Diagnostics #Lasing threshold #Materials science #Mechanics #Opacity #Optics #Physics #Plasma #Plasma Diagnostics and Applications #Pulse (music) #Shock (circulatory) #Shock wave #Thermodynamics
paper · pdf · doi:10.1143/jjap.47.2250
openalex publication_date 2008/04/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The timing, intensity, and pulse width of lasing signals in fast capillary discharge plasma at a strong 2p 5 3p–2p 5 3s transition of Ne-like Ar are experimentally investigated. To clarify the lasing mechanism, the results are compared with those obtained by numerical calculation using a one-dimensional magneto-hydrodynamics (MHD) simulation code. The comparison indicates that the lasing occurs when a cylindrically imploding shock wave arrives at the axis of the capillary and it depends not only on the electron density and temperature but also strongly on the effects of time-varying refraction and the opacity of the pinching plasma.