Water Gun Operation

To test the water gun, I prepared a solution of one quart of distilled water, one tablespoon of sodium chloride (table salt) and one ounce of red food coloring.  The solution was loaded into the gun's breech through a length of thin polyethylene tubing connected to a syringe.  The capacitors (1.5 mF total) were then charged to 10,000 volts (75 joules stored energy).  A 50 mH inductor limited the discharge rate (18 KHz).  The gun's muzzle was aimed at a piece of 8.5" X 11" plain white paper held in a vertical stand.