i. Program Six - J-10 LASL (ALC) 2. Project 6.9 - Air Density versus Time (Fedro k. Flor Cruz) Je he “One Phese,. To document the air density at verious fixed points in the blest field grior to, during, end subsequent to the passage of the shock wave. both shots. Io eccompiish the objective & bete-rey dcnsitoreter tiill be used. <A beta rey source of know. intensity wili be observed by a phosphor-photocell type of detector ut én epproximete distence of 50 cm, An eir density increase or decrease will thus cause a decrease or increese of beta rediaticon incident upon the ehosphor. . ‘ by meens of further instruncnt,tion ~, = film records are obtained of sir density versus time elong the path, os For luli shot, four bete rey densitometers will be used, one each of the forloving islenuds: Lngebi, Kirinien, bokoneereppu, end 4omon. ‘The disteuces from bomb zero to these stations will be approxirmetely 20,000; 25,000; 30,000; and 50,000 fcet respectively. It is planned to use two densitometers for KIC shot - both of which will be loceteu on Runit. 7. Troject 6.9 desires to enter Janet (Lngebi), lucy (Kirinian), bery (rokonaareppu) and Sally (Aoron) to recover phctozraphiec records. cio Gye may be required. deys ere sugested, To time limitation exists. Ak + 1 and + 2 For KLG, only Selly will be visited. 46 Sl