ABSTRACT
The edjectives ef Project 2.1 were:
1) to determine gamma exposures
versus Gistance from the point of detonation of various high-yield thermo.
maclear G@eviees; ani 2) to draw conclusions from the deta concerning gam
exposure eentours for various types ef detonations, and the validity of
scaling laws.
fhe following types of dosimeters vere used as gamma-radiation detec
Photographic, quarts-fiber, chemical, and phosphate~glass.
Oorrection fa
were applied te compensate for the nonlinear spectral response of the dos
ané for stetion shielding.
All detectors were calibrated vith co squge
Photographic Goaineter film-badge service ané co” calibration facilities
provided to other projects as requested.
Initial gaame rediation was measured by a series of stations located
about 1 to & miles from ground sero.
Mechanisms were installed at some o
these stations to shield the detectors from residual radiation.
An analy
of the date indicates that the initial games exposure at 3 miles from Che
Sumi, end Navajo was about 1 r. Consequently, initial game radiation Ls
Little military significance to exposed personnel as compared to therm! |
blast damage resulting from high-yield devices.
The curves in this report vary from those published in "4 23-200 (Re
ence1), The field Gata fall below predictions at longer ranges, and cross
to be greater than predicted at shorter ranges.
‘This difference betveen
poedicted anf field data increases with increasing yield.
Si.
5
WoW ais
reac