i eb tvesin Neh ed de he bY a ed ee oe a oe Wot awaiwis INT Ld Ll. AWW AAI UWL photocubes for detecting the second thermal peak were tested and were found about equally satisfactory. The method selected for yield determination gave results accurate + or - 16% for five shots. Detailed study of the data showed that the electromagnetic signal, consisting of a direct pulse followed by a series of ionosphere-reflected sky waves, could be used in many waves to give information concerning the detonation and the ionsphere. From the time intervals between the ground wave and sky waves, it was foun possible to compute both the distance between and receiver and the height of the reflecting ionosphere layer. Major Descriptors: *NUCLEAR EXPLOSIONS -- NUCLEAR REACTION YIELD; *NUCLEAR REACTION YIELD ~- MEASURING INSTRUMENTS; *REDWING PROJECT Descriptors: EXTRAPOLATION; PHOTOTUBES; THERMAL RADIATION Broader Terms: ELECTROMAGNETIC RADIATION; EXPLOSIONS; NUMERICAL SOLUTION; RADIATIONS; YIELDS Subject Categories: Weaponry -- 10/5/557 01861620 Author(s): 450202* (-1989) -- Explosions & Explosives -- Nuclear -- Item 257 from file: 103) EBRA-12-001429; EDB-86-185514 Beck, C.A. Title: Operation Ivy. Project 8.4. Report to the Scientific Director. High-resolution spectroscopy at Ivy compared with previous tests Corporate Source: Naval Research Lab., Washington, DC (USA) Publication Date: 1 Apr 1985 p 156 Report Number(s): AD-A-995294/6/XAB Note: Extracted version of report dated Feb 55 Document Type: Report Language: English Journal Announcement: EDB8610 Availability: NTIS, PC AO8/MF AOl. Subfile: ERA (Energy Research Abstracts). GRA (NTIS NTS) Country of Origin: United States Country of Publication: United States Abstract: The high-resolution ultraviolet and visible spectra of typical test nuclear detonations up to and including Operation Ivy were analyzed and compared. Topics studied include the types of atomc and molecular material observed (with calculations, in some cases, of the relative quantities involved), the ultraviolet cutoff, and rotational temperatures. Variation of these quantities with the radiochemical yield of the bomb is indicated. Major Descriptors: *IVY PROJECT; *NUCLEAR EXPLOSIONS -- ULTRAVIOLET SPECTRA ; *NUCLEAR EXPLOSIONS -- VISIBLE SPECTRA Descriptors: RADIOCHEMISTRY; ROTATION; ULTRAVIOLET RADIATION Broader Terms: CHEMISTRY; ELECTROMAGNETIC RADIATION; EXPLOSIONS; MOTION; NUCLEAR EXPLOSIONS; RADIATIONS; SPECTRA Subject Categories: 450202* Weaponry -- (-1989) 10/5/558 01861619 Author(s): -- Explosions & Explosives -- Nuclear -- (Item 258 from file: 103) ERA-12-001428; EDB-86-185513 Talbot, J.M.; Maupin, C.S. Title: Operation Greenhouse. Scientific Director’s report of atomic weapon tests at Eniwetok, 1951. Annex 2.9. Blast injuries in foxholes Corporate Source: Sandia Corp., Albuquerque, NM (USA) Publication Date: 1 Apr 1985 p 35 Report Number(s): AD-A-995293/8/XAB Note: Extracted version of report dated Dec 1951 Document Type: Report Language: Engljsh Journal Announéement: EDB8610 Availability: NTIS, PC A0Q3/MF A0l. Subfile: BRA (Energy Research Abstracts). Country of Origin: United States 20038149 GRA (NTIS NTS)