c. Results pe 2.38 sep TASK UNIT 2, UCRL PROGRAMS 2.3.1 Program 21, Radiochemistry a. Experimental Techniques / The main objectives were to determine the fission yields and the relative thermonuclear and fission efficiencies in various regions of the UCRL_ ; devices. To this end, samples of the particulate and gaseous debris were collected after each test. Portions of these samples were analyzed in the FA to obtain certain short-lived products and the remainder were flown to Livermore Laboratory for analysis. Recoverable threshold detectors were algo utilized to measure emergent fast neutrons in the REAL projects performed successfully and results will be obtained. Preliminary values for the fission yield and uranium reaction products were secured. b. 2.3.2 Results are shown in Table 2.5. Program 22, Reaction History 2.3.2.1 a. Project 22.1 Experimental Techniques The gamma rays produced by the nuclear reactions were detected by fluor-photocell detectors. The signals received by these detectors were transmitted by cable to recording oscillographs located in blockhouses where cameras provided a permanent record on film of the signals received. The location and collimation of the detectors varied from test to test, depending upon the information desired and the geometry of the test site. b. Results 1. yED |e Measurement of Alpha, Nuclear Reaction Time Intervals, and HE Transit Time The reaction history experiment was successful in measuring the HE transit time and the reaction rate in the be - 49 - afwi /Hn

Select target paragraph3