Split anode calorimetry for plasma arc energy density measurement with laser calibration

A split anode calorimeter (SAC) has been developed for the measurement of plasma transferred arc (PTA) energy density. novel aspect is use a laser beam with well-defined profile which was first measured using commercial diagnosis system and used to calibrate SAC. The SAC temperature data generated showed same by system. This confirmed accuracy method its suitability measuring distribution an electric if provided stably. PTA observed be distorting when crossing over interface corrected moving ground wire from side centre anode. Detailed analysis 130A density profiles both current that narrower than profile. indicates effective wider width column due other transfer processes such as convection radiation. absorption matched well Gaussian model radius 7 mm. rate copper plate found about 56%.