Abstract
Picosecond X-ray framing camera with gated microchannel plate, shortened form MCP-XFC, is widely applied for some researches as a sort of very important ultrafast diagnosis instrument, such as the implosion of inertial confinement fusion (ICF) experiments, the laser-produced plasmas and Z-pinch. The dynamic spatial resolving power is discussed based on the theoretically models of picosecond (ps) voltage pulse gated MCP and spatial modulation transfer function (SMTF) with proximity focusing system. The relation is also analyzed between the dynamic spatial resolution and some parameters such as the voitage of phosphor screen, the interval of proximity focusing system, the voltage value and the pulse width of picosecond gated pulse. Under practical experiment condition, the compute value of dynamic SMTF with gated MCP-XFC is 24 lp/mm, and this value is accorded with the testing results 25 lp/mm of static spatial resolution. At last, some improved methods are put forward.
| Original language | English |
|---|---|
| Pages (from-to) | 2209-2214 |
| Number of pages | 6 |
| Journal | Guangzi Xuebao/Acta Photonica Sinica |
| Volume | 36 |
| Issue number | 12 |
| State | Published - Dec 2007 |
Keywords
- MicroChannel plate (MCP)
- Spatial modulation transfer function (SMTF)
- Spatial resolution
- Ultrafast process diagnosis
- X-ray framing camera