. The American journal of roentgenology, radium therapy and nuclear medicine . /5TRIBWrt£W i.\ Pl^.\£ Cat\T^OftVS- 7bB£ AX/S Af&? %& eaoraaa Vous(t**x. - - - Dotted LtHES VC FlLTEJ? r- \ fRO*-* Or Targe. Fig. 15 The distribution curve is appreciablyflattened by the use of the filters. On going,for example, from 350° to 3200 the intensityfalls off with no filter per cent, with of copper per cent and with 1 copper there is no measurable change. At the back of the target the intensityreaches a maximum at a point close to1800 where it should be a maximum fromgeometrical consid
. The American journal of roentgenology, radium therapy and nuclear medicine . /5TRIBWrt£W i.\ Pl^.\£ Cat\T^OftVS- 7bB£ AX/S Af&? %& eaoraaa Vous(t**x. - - - Dotted LtHES VC FlLTEJ? r- \ fRO*-* Or Targe. Fig. 15 The distribution curve is appreciablyflattened by the use of the filters. On going,for example, from 350° to 3200 the intensityfalls off with no filter per cent, with of copper per cent and with 1 copper there is no measurable change. At the back of the target the intensityreaches a maximum at a point close to1800 where it should be a maximum fromgeometrical considerations. The maximum intensity from the backof the target with no filter is per centof the maximum from the front of thetarget; with mm. of copper filter it per cent and with 1 mm. of copperfilter it is per cent. The average pene-trating power of the radiations comingfrom the back of the target is then seen
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Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1900, bookyear1906
