man-made shell of trapped radiat ' ‘ The physical shape and position c: J§.- - we]! the ' Tre and the decay of intensity wai obse +e. un ‘Ete bution of the radiation was measurrc as "abn of a selected magnetic shell of the -artn => nagoieti fae i plotted out for the first time by experiment: 2 ean excursions within this shell the tranpe 4 «le t MS wer fe patter 4 distances dnd were following the magnet of over 4,000 miles. foaleerrgr The rate of cderav of altitude provided new informatio we ie Beate ae vt : Are ' , “aemsth. » 1! mouerapty fiche 3 es atmosphere since atmospher.c sca’ter nu Aas oe moma for loss of particles. Morecver, « omt.n ree, of the Shell served to answer the * cai qi “4 of trapped particles transverse tc tar -5 of essential importance in acthore ug 3 the natural radiation and were sow of the watt ve ths og on oe 7: x . ¢ hoot 5 valuable resuits in the lower fring: Explorer 1V continuec t protr ‘t e te ours ted Shaw ? ° Throughout the testing pervcs ator as Pow th 3 - ors ‘labeled electrons re e.se altitude sounding rockets war i Ser mae obese + B 1 : + ayo t aAumtts rfid oan from the Argus tests, making som: exhaustion ot its batteries in latte >e; tr yte th ap the intensity had become barely obse . 4 a a” r 4 December 6, ‘958. ocog But the «ffe to before the flight of Pionee: [oor 5 «+ radiation had . relative minimum | 4 a or lawer latitues tvs a ' | now are Satisfactory a¢vount be. Scientists. satis pda rey m t ots "af, s *C * The immense bu iy cf of Servi f per) a “fF athe > pretation bya large nimber From these > bse t * The site of the Argus testy « piet and fr at p ve injected radiation shell in a :2gior difficult to detest, r dete | ths detected a smal! residuum ot the 4 either higher ’ } natural radiat:on at the alt‘tu ies It appears likely, howeres ’ ah toy & + te r ° - ate Tee : ri, ot e ‘ 1 rot , “ . examples: There was ric diffustor uy electron shell since the ‘h. constant. Also trace @ og. ' \ ke ch the whoa 4 Cog wc : days and possible wees Extrapolatiorns op hype e, which have been based. 3.:! confirmed by the experi nent it possible to predict the e field with considerable aciurorder of several earth's rau The directness and clar ty ofr provided a sound basis for interpre around the earth. Itis likely that: t rhe \ hap At or ' mp ts po 4 td tar 1 oe Le