APhysical ModelabouttheSpaceChargePacket Phenomenon inLow-Density Polyethylene

Packet-like space-charge behavior in low-density polyethylene underdcfield wasreported frequently. However, noreliable explanation forthe spacecharge packet behavior wasgiven out.Inthis paper, theinfluence ofcarrier mobility versus electric field onpacket behavior wasstudied. Finally, apossible physical modellike similar Gunneffect wasgiven out todiscuss thespace charge packet behavior.