Visible emission from exploding wire in water

Exploding wire in water generates non-ideal strongly coupled plasma, which can model some phenomena appearing in interior of stars, in inertial confinement fusion, in plasma physical-chemistry, in rocket engines, etc. This complicated 2-phase transitions process can be hardly modeled numerically because of missing material data at extremely high pressures. Therefore, the basic question relevant for radial energy transport estimates -- when between wire and water a water-vapor-layer is created (if any) -- has to be answered experimentally. For this purpose the waveforms of the driving current and the H-alpha line emission were measured simultaneously. First spectrometric results obtained by means of photon-counting technique will be discussed. Other spectroscopic data in visible range can yield valuable information about plasma periphery and about layer between plasma and surrounding liquid water.