Wosbee de he I Ok hh Le Major Descriptors: *GREENHOUSE PROJECT; *NUCLEAR EXPLOSIONS FIREBALLS; *NUCLEAR FIREBALLS -- MEASURING INSTRUMENTS; FIREBALLS -- YIELDS Descriptors: STREAK CAMERAS Broader Terms: CAMERAS; NUCLEAR EXPLOSIONS; Subject Categories: Weaponry 10/5/539 01877536 Author(s): -- EXPLOSIONS; FIREBALLS; RADIATION DETECTORS 450202* (-1989) -- NUCLEAR *NUCLEAR MEASURING INSTRUMENTS; -- Explosions & Explosives -- Nuclear -- (Item 239 from file: 103) BRA-12-005069; EDB-87-005169 Hall, W.C. Title: Operation Greenhouse. Scientific Director’s report of atomic weapon tests at Eniwetok, 1951. Annex 1.1. Prompt-gamma-ray measurements. Part 3. The measurement of transit time Corporate Source: Naval Research Lab., Washington, DC (USA) Publication Date: 1 Apr 1985 Pp 56 Report Number(s): AD-A-995292/0/XAB Document Type: aReport Language: English Journal Announcement: EDB8611 Availability: NTIS, PC A04/MF AOl. Subfile: BRA (Energy Research Abstracts). GRA (NTIS NTS) Country of Origin: United States Country of Publication: United States Abstract: This report describes the procedures followed in measuring the transit time of the atomic explosions evaluated in Operation Greenhouse. It includes a description of the equipment used, the installations made, and the results obtained. Transmit time measurements were obtainded for the Easy, George and Item Shots; and on the whole, the transit-time recording equipment performed well. Major Descriptors: *GREENHOUSE PROJECT; *NUCLEAR EXPLOSIONS -- PROMPT GAMMA RADIATION Descriptors: RECORDING SYSTEMS; TIME MEASUREMENT Broader Terms: ELECTROMAGNETIC RADIATION; EXPLOSIONS; GAMMA RADIATION; IONIZING RADIATIONS; NUCLEAR EXPLOSIONS; RADIATIONS Subject Categories: 450202* Weaponry -~- (-1989) 10/5/540 01877535 Author(s): -- Explosions & Explosives -- Nuclear -- (Item 240 from file: 103) ERA-12-005068; EDB-87-005168 Koch, G.E. Title: Operation Greenhouse. Scientific Director’s report of atomic weapon tests at Eniwetok, 1951. Annex 6.8. cloud radiation field Corporate Source: Naval Radiological Defense Lab., San Francisco, CA (USA) Publication Date: 1 Apr 1985 p 112 Report Number(s): AD-A-995291/2/XAB Document Type: Report Language: English Journal Announcement: EDB8611 Availability: NTIS, PC A06/MF AOl. Subfile: ERA (Energy Research Abstracts). GRA (NTIS NTS) Country of Origin: United States Country of Publication: United States Abstract: The object of this study was to measure the relationship between the spatial distribution of the radioactive fission products and the resultant radioactive field in an atomic-bomb cloud. Data obtained by the high-intensity rate meters and the jet impactors lead to the following conclusions: (1) There is a definite correlation between the particulaté fission-particle density and the gamma-radiation intensity measured within the cloud; (2) The effective energy of the gamma radiation within the atomic bomb cloud is quite low, being of the order of 200 kev; (3) The structure of the atomic bomb cloud resembles a 3806