Evening star. [volume] (Washington, D.C.) 1854-1972, 1956-10-25

bomb. as the trigger" to create
heat and temperature to make
the hydrogen bomb go off. Sc
any H-bomb forms some stron-
ltium, too, depending on how big
ian A-bomb reaction was used as
the trigger.
1t is quite possible that So
called super H bombs create more
Istrontium. Some scientists spec
Iulate that the super H-bomb gets
its extra power from being sur
rounded by a jacket of ordinary
uranium. This extra uranium
could yield extra amounts OF
Istrontium. But the Acc has
never confirmed or denied that
H-bombs. or some of them, are
constructed in this way.
Q. Would haIting H-bOmb test.
halt production of strOntium- 80:
A. No. A-bomb weapons would
have to be banned also.
Q. Do H-bOmbS produce mOrt
general fallOut than atom bombs,
A. Apparently they can, al.
though the Acc has never de.
tailed this because it might give
clues to types of weapons. Tht
amount of fallout, or types. de.
ponds upon the size or yield o.
the bomb, the height at which
tits exploded. what it's made of
how many different things-likt
a coral island-it picks up anc
makes radioactive.
Q. Can fallOut from H-bOmb.
be reduced?
A. The Acc says last springs
tests in the Pacific helped show
how to localize fallout. 1t has
not explained how this was done
and to what extent. Height o.
defamation and engineering Of
fthe weapon could be factors.
Q. What is the ratio of A.
bombs to H-bombS tested so far:
/ A. The Acc disclosed this weel
that of all United States shots 81
far. one-f1fth have been H-bomt
reactions. the rest the atomic OF
fission kind.
/ @. Is strOntium the only dan,
gerOus fall-Out?
4 A. Many different kinds O.
radioactive atoms and dust are
created. Some die out fast
others linger. The concern i.
over those which can add Il
general radiation.
@. How is falI-Out broadcast:
A. Heavy particles soon droE
ito the earth, near the test site
Lighter ones float in the lowel
atmosphere. can go around the
world in a belt of latitude sew.
eral times in a few weeks before
drifting to earth, or being car.
ried down by rain. Some i.
thrust into the stratosphere BY
powerful weapons and may stay
there for 10 years before de.
scending. While airborne the
radioactivity decreases, the ex.
tent depending upon how long
lived are the particular types Of
atoms.
/ q. How are nuclear tests In
a foreign country detected?
/ A. BY air-sampling at Gov.
eminent stations and Other
means. not described for security
reasons. Fall-out gives clue.
to the type and strength of thu
weapon tested.
@. Can a foreign nations test.
be detected accurately enough
to learn whether it was violating
an agreement not to test?
A. Many atomic scientists sa,
yes. at least for all but tn
smallest-power ones, and tina
the advantages gained by a sin
gle test cannot be very great
The Acc says detection system
cannot ensure picking up ever
test. and that learning the siz
and nature of the test take
time, particularly with the larg
er, more complicated weapons.
@. Have we learned enOugl
from our tests. or built up GU
nucIear arsenal enough, to stOI
testing?
I A. Thi is another hard nubbil
lof disagreement. Some yer,
prominent and leading scientist
say We can stop because we hay