Gua caro) een Projest 6.5 ov ~ Analysis of Electromagnetic Pulse Produced by Nuclear Explosions - Charles J. Ong OBIFCTIVE The objective of Project 6.5 is to obtain waveforms of the electromagnetic radiation for all the detonations during Operation REDWING. This data is to be used in connection with a continuing study relating the waveform parameters to the height ani yield of the detonation. INSTRUMIT ATION Two identical stations are usei to record data, one at Eniwetok and one at Kwajalein, The instrumentation consists of a wide-band receiver with seperate cucputs connected to each of the three oscilloscopes, ” Mounted on each iltoscope is a Polaroid Land Camera for recording the transient display. The wide-band receiver consists of one primary and four seconiary eathole folloyor amplifiers, An antenna, frequency insensitive in the range of interest is fed directly into the primary cathode follower. The primary eathole follower is th-n connected to four inijividual cathode followers by a 50-ohm coaxial cable. Only three secondary cathode followers are utilized, the fourth serving as a spare, The number one and two cathole followers feed oscilloscopes with sweep speeds of approximately 30 microseconds per centimeter andi 10 microseconds/centimeter respectively. The number three cathode follower is connected to the third oscilloscope through a 2 microsecond delay line. The third oscilloscope has a sweep speed of 1.0 microseconds/centimeter. All oscilloscopes were triggered simultaneously by the DC trigger device ao leeated in the primary cathode follower ani connected directly to the prenl0Oe. ‘ SRNL RC, -~ 69 - “\ |