Assure:
a.
be
Is Ebr
d
Assume gamma energy is approximated by comparison with radius,
A particle of 150 nicrocuries of beta activity or 7§ microe
curies of gamma activity,
where:
(See Appendix 4.)
I © gamma dose rate (r/hr)
.
.
d = centinesters
Lets so # 7.5 x 10™
ad 210 on
r= (2dlp
= 0.063 m/hr gamma dose rate at four incheg
yh
i
-
. ete)