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CGuapter 2
X-RAY AMD THERMAL RAD LATION
2.1
THEGRY AND AxZALYSIS
2.1.1
Ineroducciaon
X-ray measurements vere made on the Teak event and chenm! seasuresects
were usde on both the Yeak and Orange events.
The rocket-borne stations, TK-252 and TK-209, were plamed to be 30,000
feet from Teak air zero with Station TK-252 in a direction perpendicular to
the Eedstone axis and Station IX-209 in a direction parallel to the Redstoue
axis as shown in Fig. 1.1.
As it turned out, at rero time Station TK-292 was
at an altitude of 252,000 feet and at a radial distance of 63,600 feet frum
air zero, Station TK-209 was at an altitnde of 205,700 feet and at a radial
distance of 58,600 feet from air zero. The instrumere rocket of Station IK252 wes exposed side-on to the detonation as planned; however, the rocket
statiou, TK-209, was oct exposed exactly nnse-ca as planed but tilted aboct
55 degrees from planned orientation with an uncertainty of about 5 degrees.
Air zero of the Orange event was at an altitude of 140,965 feet. The
*rocket-borne station, OR-125S, located at an altimde of 124,700 feet and at
a@ radial distance of 42,100 feet, carried thermal detectors.
The station vas
in a direction perpendicular to the Redstone axis and the instrument rocket
was exposed to the detonation with a side-on attitmde.
The instruments are described in Section 2.2; however, designations will
be given here to the X-ray detectors to clarify references to them.
Each I-ray
instrument consists of a pair of calorimeters each shielited by a different X-ray
filter.
A calorimeter and the thin filter are designated detector 4, and calorin-
eter and thick filter are designated detector B.
aze designated filters A and B, respectively.
The filters of these detectors
Subscripts going from 1 to 6 are
used to indicate the angular position of the decectsr on the rocaet.
In a sea level atoosphere, l0-cew X-rays are attemiated to one-balf istensity in about 1 meter, whereas in a 250,000-foot ataosphere a half-chickoess is
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