86.
Smirnov, N. S.
PeOfuan Ur ih INFLUENCE OF AN ATCMIC EXPLOSION ON THE
STATE OF THE ATMOSPHERE.
‘
Ser,Geofiz,
Now20, Loeves.
jeas He
Aarestiias
The author reviews trie‘iy various American, Western
European and Japaneze studies deaing with the effect
of atomic explosicns upcn the state of atmosphere. He
then considers the possitie changes in the radiation
radioactive properties cf the atmosphere that can be
caused by the explosion of one atomic bomb, how the
increase in radioactivity can influence the radiation
balance of the earth, the effect of atomic explosions
upon the dust, ion and aeryvsc!] content of the atmosphere
and the meteorolcgicas effects of atomic explosions such
as the occurrence of fogs, etc.
87.
Terentiuk. F.
MEASUREMENT OF ARTIFICIAL RADIOACTIVITY IN THE ATMOSPHERE
AT OTTAWA, CANADA.
139 (1958).
CanadianJournalofPhysics 36, 136=
In recent years there has been considerable interest in
the artificial radioactivity in the atmosphere originating from atomic and thermonuclear explcsions.
For the
past year da:liy measurenent2 of radioactivity have been
made at Ottawa.
The samp.ing times corresponded to air
volumes of %2° cubic metric and 2,000 cubic meters,
respectively.
Filters were kept for a period of 3 days
before measurements were made in order to permit
Maturai activity resulting from daughter products of
radon and thoron tc de.ay tc a negligible vaiue.
Measurements of the gross beta activity from the filters
were made directriy end -window Geiger tubes.
Fiiters
shewing con71asrable initial radioactivity were measured
at intervals cf a few days in orcar to obtain the rate
of decay of the acilyity,
‘+ wae hoped that the data
obtained would make °° possitis to fix the date of the
explosion responsit’« fcr
he f1.%¢r activity but the
fixing cf dates was tery cuncertair.