| Title |
Electro-Optical Characteristics of an ICP Light Source Depending on Driving Temperature and Length of Discharge Tube |
| Authors |
Youn-Chan Yim ; Dae-Hee Park |
| Keywords |
Inductively Coupled Plasma ; Thermal Dependency ; Rating Power ; Aging Time ; Electro-Optical Stability |
| Abstract |
We investigated the electro-optical characteristics of an ICP(Inductively Coupled Plasma) light source depending on driving temperature, and length of discharge tube. An electro-optical stability of a sample at operating was measured to see a steady state of a sample. In this results, we can see that a stability of power loss and luminous flux of a sample at operating of upper 70[min] was 1.45[%] and 0.36[%1 We measured the optical characteristics of a sample in a thermal chamber operated at a specific temperature divided into 5 steps. While luminance increased with temperature increasing, the decrement of luminance appeared at upper 46.7[℃]. According to Parchen"s and Boyle-Charles" law, we can speculate that a pressure was increased and a higher voltage was needed but a ballaster having a rating power can"t support a higher voltage corresponding to a pressure change, 0.02[Torr] at 46.7[℃]. Moreover, we measured an applied power and current of samples depending to a various length of a discharge tube. |