When the discharge takes place between the electrodes 9a and 9b inside the tube 7, the pressure transmitting {HEAD ~ medium} 8 quickly expands due to {TAIL ~ the discharge energy} 
quickly expands due to
When the discharge takes place between the electrodes 9a and 9b inside the tube 7 , the pressure transmitting { HEAD ~ medium } 8 quickly expands due to { TAIL ~ the discharge energy }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL