Total 7-radiatio scintillation co £4 in Oo ON A scintillatior wy Cc i or. L active contaminat i “ : a a _ @ during 1956. Howev< /equipment used durir aa A fe pee a F pransistorized. <3 ae) na O # Ne - fa a ee ee oo a ne fa ea BE a O FRO BHO RROSR ORS? BS Ooty or PRS cy ™N Eat » g 8 NN SO |f. IN ao qo CN Q mw mtd ~t | 2 = = - 43Q¥ O a oO 8 WN 8 LN 2 2 € EF Z sO io 4 tO bam on Oo * ot @Nal(T1) |Photomulti- 47 00 8; gs. 2: ®5 BElement (RCA 6199) &cry Oo S§—t Oo ZXLN 5 SFiy rd = pa s -t S nd S ro sr rc ; Ne) oO Oo C O C é c oO go S ™ MN & a cy CQ on rd ~t 82cry C * CQ BS = u o a = 4 O O Rig. 1. Scintillati “ && Q00 Ba % Institute of Phy Z Ss2co oS FB Lenergy value in the ithe r ray spectrum F probe combined with Fanalyzer. x = SS c ° ° + : 4 ~ Pod poLNA z C 5 00 e 2 ~ be be ° © §&§ ° S ‘9 S ‘o oO oO 0 i ¢ * Phosphor] plier tube 8m . o ° OQ rt oect oe. ° ord > 8 3 oO s counting rates 4 =Z on . 5 r AUNT!TTOUNCOOt—R ~ WN sO SO SO Ne} oS Ro 3 bo) ud oO bo f=fx] Cl SO to NI SO bo = 3 phe | device was set at a {MM we quae o The length of : 300m enabling measu Mtrue depth was made In these values, th an As: oOo B® used as the phospho1 | radiological survey OS Co sodium iodide cr scintillation probe w oN rm oOo om BS of t A block diagram ys te oS oO ON - ~t 4 SO co oO 4 O N “* mae a!

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