a | aL DATE 01 wd3 GNNOHONDVe EFFICIENCY cpmidpm — tripe p tp ype etter tt tit pe AUG. 1977 JAN, 1978 JAN. 1979 JAN, 1960 EFFICIENCY com/dpm FIGURE 4-9. ALPHA SWIPE COUNTER, SAC 4, SN 37 4b ~ _ df eH DATE 7 = =. 2 ~~ wae 1 3 g tre yp py dye ppp pp ty _etLyr pte p_e_L_y_TyyyY sy JAN, 1978 g 2 “ ene _" BACKGROUND AUG. 1977 o 3 JAN. 1979 —4.01 JAN. 7980 FIGURE 4.10. ALPHA SWIPE COUNTER, SAC4, SN 38 EFFICIENCY comidpm 5k o a a 4b az 5° € z a o 3 EFFICIENCY 2k DATE Pru; AUG.1977 yy | yyyyy JAN. 1978 yy yy yy gj yy yy yy yy, Lg JAN, 1979 y ~e_l2 yy ft JAN. 1980 EFFICIENCY cpmidpm FIGURE 4-11. LARGE AREA ALPHA COUNTER, AC-23-.5/MS-2, SN 636 iPr wD > a a bE z o Cc 5 \ ACKGROUND (NS 4h DATE 500 Lippe AUG,1977 “~ tL ep peppy py ye ft py ty py pT | JAN. 1978 JAN. 1979 FIGURE 4-12. LARGE AREA BETA COUNTER, AC-23-.5/MS-2, SN 570 126 JAN. 1960 300 3 oOo 3 200