wee OTERO
The gamma detector ,"Baintileg," covers the range
ef ‘3.01 to 1000 wr/hr in a single senle. . it iu a periable
‘
instrument, weighing 17 pounds 11 ounces, end reqiring nc
exterml source of powere
Fie.
at rt ecieeditetites
et “a Vira “sg “OD
The recording wit is also portable and selfepowersie
An audic signal, modulated by the output of the sointilog, is
rveeordet on one chamel of a two channel tape recorders The
medulation is between 600 and 3,500 oysles end is propertionl
ve the legeritim of the radiation intensitye On the scoond
ohamel, the operator makes a veoal record of position, sltitude,
etee By weens of a playteck attachment, the audio aicmal ean
be converted te « velterce chich astwates & pen type recorder,
eonverting the radiation intersities te a graphie recard
‘ON ND
(Figure Yale
preliminary survey at the Wevada Proving Grounds
yielded caltiratton faoters of , and 10 for converting readings
e-sour
at 200' and 500' altitudes respectively te intensity 3 feet ahere
the @owde These fasters were cheaked in flights over the
fslands of Bngebi, Runit ani Kwajaleine
Ground level radiation
intensities, ebtained by direct messurement and by acuputation
fren aerial readings, are iivted in Table 1.1.
MYHOLM oneo 1 OERT Ce REEAE MEERi ng ERE cet: or ry seta es se
TARR 101
sitade
Engobt,
Ranit
3e
08
2ek
Oe75
200?
066
207
Oda
590!
O06
303
-
ok=
reer
rr
Kwajolein
Kegon island