a!

2.2.2 and 2.2.10 Addendum.
Objectives.

Programs 10 and 18.

2-51

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The objectives were to measure the total thermal, thermal
power,

time interval and optical-spectroscopic observation of

high altitude fire-ball phenomena.

oy
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gfotat thermal measured
at Johnston Island —
3
2
Featories per cm .

Assuming atmospheric transmission c.

V638 which was the mean noon value on four preceding days,

+7:

corresponding thermal energy release from the bomb was DELETED.
pELETED This low thermal energy release (as seen from sea level:
“tenot unrealistic because a large fracticn of the early he ot
temperature fireball radiation resides in the u:‘ra viole:.
which is absorbed in the atmosphere, parviculariv in the ¢zone
layer.

The duration of the thermal pulse for deposition of

90% of the incident energy was
ee

The resultsofthe experiments designed toattain the
cor‘oy\ poe
ENnL &

third and main objective of the two programs were unfévorably

“flo, BETected by the burst location error.

Specifically, informa-

% ¢. thon on the very early development of the fireball could not
be obtained,

since none of the collimated instrument channels

”

Select target paragraph3