Order number page 20 801. 940406-171827-13 set 5 with ! OFFICIAEGSEONLY KEYWORD (S) CHEMICAL DOSEMETERS/ ; GREENHOUSE/ ; GREENHOUSE; COLOR ' Item 33 150. REPORT NUMBER 110. PRIMARY TITLE (M) RAND-RM~-4037-PR Note on persisting radio propagation effects after high-altitude nuclear bursts 70. PERSONAL AUTHOR (M) Crain, C.M. 710. CORPORATE SOURCE RAND Corp., Santa Monica, CA (USA) 371. PUB. DATE (YYMMDD) 640300 34. CLASSIF. LEVEL TEXT Unclassified 950. ABSTRACT A theoretical interpretation is given of the abnormal ionization in the atmosphere, such as that produced by the Teak and Orange bursts, which can affect 801. Item 150. 110. KEYWORD(S) radio propagation over a wide area for as long as two weeks after the detonation. Such ionization results from the beta and gamma radiation arising from the decay of fission products produced by the burst. For this study, it is assumed that the debris is homogeneously spread over a circular area centered on the burst and that it has representative decay and spectral characteristics. Typical electron production distribution for the homogeneous layer of fission debris at over 90-kilometer altitude and typical daytime and nighttime natural and debris production profiles for low altitude are plotted. The analysis indicates that the discernible propagation effects from Teak- and Orange-type bursts can be expected to occur and to prevail for several days after the burst. 7 references. TEAK BURST/radio interference ;ORANGE BURST/radio interference ;RADIO INTERFERENCE/; IONOSPHERIC BURSTS/radio interference ;IONIZATION; BETA PARTICLES; GAMMA RADIATION; FISSION PRODUCTS;BOMB DEBRIS; WAVE PROPAGATION 34 REPORT NUMBER PRIMARY TITLE (M) XRD--211 Aerological report on Operation Crossroads. IIL of III Vol.]. Operation Crossroads [Vol. 371. PUB. DATE (YYMMDD) jdate 34. CLASSIF. LEVEL TEXT Unclassified 950. ABSTRACT (See Vol. I and Vol. II as XRD-209 and XRD-210, respectively) Meteorological data obtained “during April-July 1946 in the vicinity of Marshall Islands are presented in the report. 801. KEYWORD (S) BIKINI/meteorology ;ENIWETOK/meteorology ; RONGELAP/meteorology ;RONGERIK/meteorology ; UTIRIK/meteorology ;MARSHALL ISLANDS/meteorology ;BIKINI; METEOROLOGY ; ENIWETOK ; RONGELAP ; RONGERIK; UTIRIK 5003394 CFFICIAL USE ONLY