nase surge.‘ The particulate dust cloud that rolls out from the bottom of the cloud column cetanation of a nuclear cevice. For underwater bursts, the base surge is a cloud of ang the fiowing properties are those af a homogeneous liquid. raduced by the ter droplets, A washdown system used used on an aircraft carrier flight deck for decontaminat ng helicopter Tne Datntub's purpose was to prevent water used to nose tne aircraft wh eis from running onto tne flignt deck. [t was 3 low-walled canvas rectangle treated with waterpro fing preservatives, “agathtuo". landing gear. oatnythersograph (B/T). A device for obtaining a record of temperature with depth in the u per 1,000 feet (s0Q meters, of the ocean, from a snip underway, recquersi (5g). See curie (C1). neta burns. Beta particles that come into contact with the skin and remain for an apprecia le time can Cause a form of ragiation injury sometimes referred to as “beta burn." In an area of xtensive early fallout, the wnoie surface of the ocdy may be exposed to beta partictes. eta emitter. A radtonuclide that disintegrates by beta particle emission. Ail beta-activ existing in nature expel neqative particles, i.e., electrons or, more exactly, negatro emitting particles are narmful ir inhaled or ingested. elements beta clei of cer- particle (ra A charged particle of very smal} mass emitted spontaneously from the tain radioactive elements. Host fif not all) of the direct fission products emit (neg particles. Physicaliy, tie beta particle is identical to an electron moving at high v yiast. Tne detonation of a nuciear device, like the detonation of a nigh explosive such as in the sudden formation of a pressure or shock wave, calied a blast wave in the air an when the energy is imparted to water or Earth. blast wave. An air pulse in which the pressure increases sharply at the front accompanied Beta- ive) beta ocity. NT, results a snock wave winds propagated from an explosion. 1 oiast yield, That portion of the total energy of a nuclear explosion tnat manifests itself s blast and . Shock waves. uoamo cebris. BRL. See weapon debris. Ballistics Research Laboratories, Aberdeen Proving Ground, Maryland (Army). duilea. Bureau of Medicine and Surgery (Navy). burst. Explosion; or detonation. BuShips. C-47. See also airburst, high-altitude burst, surface burst. Bureau of Ships (Navy). A twin-engine transport aircraft manufactured by Vouglas Aircraft Company (Air Force OC~3). fersion of the C-54. A 4-engine military cargo and personnel transport manufactured by Douglas Aircraft Conpany (Air Force version of the OC-4). cab. The shelter that covers a nuclear device being prepared for test. Earth's surface, or on a barge. May be located on aftower, on tne Canberra. An RAF twin-turbojet, all-weather, tactical bomber developed by English Electric. the United States and used by the Air Force as the B-57. JAiso built in cathode-ray tube. A vacuum tube in which cathode rays (electrons) are beamed upon a fluores nt screen to proguce a luminous image. The character of this image is related to, and controlled by, one or more electrical signals appiied to the cathode-ray Deam as input information. The tubes are sed in measuring instruments such as oscilloscapes and in radar and television displays. cave. lis ot. CIC. A heavily shielded enclosure in which radioactive materials can be remotely manipulate radtation exposure af personnel. Abvreviation for curie, which see. 1950s. Ci to avoid is preferred now but c was the abbreviation usd in the ounter-Intelligence Corps (Army). 473