Subject Categories: 450200* -- Military Technology, Defense -- Nuclear Explosions & Explosives 10/5/746 (Item 446 from file: Weaponry, 103) 00875294 ERA-07-023043; EDB-82-050135 Author(s): Willey, R.L.; Young, G.A.; Aronson, C.J. Title: Base surge measurements by photography Corporate Source: Naval Ordnance Lab., White Oak, MD Publication Date: Sep 1955 p 34 Report Number(s): AD-361766 Document Type: & National (USA) Report Language: English Journal Announcement: EDB8107 Availability: NTIS, PC A03/MF AOl. Subfile: ERA (Energy Research Abstracts); NTS (NTIS). Country of Origin: United States Country of Publication: United States Abstract: The major objective of Project 1.1c was the study of base surge phenomena on the Operation CASTLE shots by means of photography. No pictures of base surges were obtained, but aerial photographs for other projects indicated that base surges might have formed at times when the illumination was inadequate for surface photography. This cannot be established with certainty. Radar scope photography proved to be useful for indicating the region of heavy fallout. Further studies of this type would be recommended only for tests conducted during daylight hours.; Major Descriptors: Descriptors: *CASTLE PROJECT; FALLOUT Broader Terms: EXPLOSIONS; *NUCLEAR EXPLOSIONS NUCLEAR EXPLOSIONS Subject Categories: 450200* -- Military Technology, Defense -- Nuclear Explosions & Explosives 10/5/747 (Item 447 from file: 103) 00875293 ERA-07-023042; EDB-82-050134 Author(s): Rinnert, H.R. Title: Ship-shielding studies Corporate Source: Naval Radiological Defense Lab., (USA) Publication Date: 5 Jul 1959 p 92 Report Number(s): AD-357967 Document Type: Report Language: English Journal Announcement: EDB8107 Availability: NTIS, PC A05/MF AOl. Subfile: ERA (Energy Research Abstracts); Country of Origin: United States Country of Publication: United States NTS -- PHOTOGRAPHY Weaponry, & National San Francisco, CA (NTIS). Abstract: The principal objectives of this project were to determine, for the types of nuclear detonations encountered during Operation Redwing, (1) the relative gamma radiation fields resulting from radioactive contaminants on a ship’s weather surfaces, in the surrounding air envelope, and in the surrounding water envelope as a function of time and (2) characteristics of the interaction of gamma radiation with steel as a function of thickness and time after detonation. Shielded recording gamma-radiation detectors of known geometry were located on two YAG’s to permit discrimination between the radiation fields resulting from water-borne and air-borne activities only. Unshielded detectors supplied data on the overall radiation fields on the weather decks. Recording radiation detectors inclosed in steel cylinders of various thicknesses supplied combined absorption and multiple scattering;data as a function of time after detonation.; Major Descriptors: *FALLOUT -- DEPOSITION; *NUCLEAR EXPLOSIONS -- FALLOUT; *REDWING PROJECT; *SHIPS -- SURFACE CONTAMINATION Descriptors: EXTERNAL IRRADIATION; GAMMA RADIATION; PERSONNEL; RADIATION DOSES; RADIATION MONITORING; RADIATION PROTECTION; RADIOACTIVITY;