determine the very-high-altitude behavior of two nuclear explosions, namely, the thermal power versus time and the total thermal yield. The power-time measurements were performed wth four bolometers chopper units. A large dynamic range was provided both electronically and by neutral filters. The total thermal yield of the Teak Shot was measured by thermopile recorder systems. The total thermal yield for Orange Shot could not be determined because of the cloud cover present over Johnston Island. Major Descriptors: *HARDTACK PROJECT; *NUCLEAR EXPLOSIONS -- THERMAL RADIATION; *THERMAL RADIATION -- YIELDS Descriptors: ATMOSPHERIC EXPLOSIONS; BOLOMETERS; CLOUD COVER; POWER; RECORDING SYSTEMS Broader Terms: ELECTROMAGNETIC RADIATION; ; NUCLEAR EXPLOSIONS; RADIATIONS Subject Categories: Weaponry -- 10/5/517 01877574 Author(s): Title: 450202* (-1989) EXPLOSIONS; MEASURING INSTRUMENTS -- Explosions & Explosives -- Nuclear -- (Item 217 from file: 103) ERA-12-005114; EDB-87-005207 Beck, C.A.; Operation Castle. Corporate Source: Campbell, J.H. Project 18.3. High-resolution spectroscopy Naval Research Lab., Publication Date: 1 Sep 1985 °#£p 45 Report Number(s): AD-A-995367/0/XAB; Document Type: Report Language: English Journal Announcement: EDB8611 Washington, DC (USA) NRL-4519 (EX) - Availability: NTIS, PC A03/MF AOl. Subfile: ERA (Energy Research Abstracts). GRA (NTIS NTS) Country of Origin: United States Country of Publication: United States Abstract: The high-resolution work undertaken at Castle with three spectrographs of relatively high dispersion is described and analyzed. Profitable results were obtained from the spectra taken with the JACO 21-foot Wadsworth-mount spectrograph, mainly the highest violet cutoff to date and a very predominant NO/sub 2/ spectrum in absorption. There is a definite indication that the NO/sub 2/ exists ina state of excitation above that observed at ordinary room temperature. The observation as a function of time of the formation NO/sub 2/, which conceivably can be formed in different ways during different intervals of the explosion, would be of great interest. Major Descriptors: *CASTLE PROJECT; *NITROGEN DIOXIDE -- ABSORPTION SPECTRA ; *NUCLEAR EXPLOSIONS -- NUCLEAR FIREBALLS; *NUCLEAR EXPLOSIONS -SPECTROSCOPY; *NUCLEAR FIREBALLS -- ABSORPTION SPECTRA Descriptors: EXCITATION Broader Terms: CHALCOGENIDES; ENERGY-LEVEL TRANSITIONS; EXPLOSIONS; FIREBALLS; NITROGEN COMPOUNDS; NITROGEN OXIDES; NUCLEAR EXPLOSIONS; OXIDES; OXYGEN COMPOUNDS; SPECTRA Subject Categories: 450202* Weaponry -- (-1989) 10/5/518 01877571 Author(s): -- Explosions & Explosives -- Nuclear -- (Item 218 from file: BRA-12-005111; Curtis, W.E. 103) EDB-87-005204 Title: Operation Sandstone. Nuclear explosions--1948. Annex 5. Part 3. Blast measurement of pressure as a function of time. Sandstone report No. 22 Corporate Source: Joint Task Force Seven, Publication Date: 1 Apr 1985 p 446 Report Number(s): AD-A-995364/7/XAB Document Type:;Report Language: English Journal Announcement: EDB8611 Availability: NTIS, PC Al9/MF A0Ql. Subfile: ERA (Energy Research Abstracts). 9003146 Washington, GRA DC (USA) (NTIS NTS)