nuclear efficiency
The ratio (expressed as a percentage)
between the number of atoms that fission
and the total number of fissionable atoms
available in a specific atomic weapon,
muclear safing system
The portion of an atomic weapon that contains
integrally all the apparatus which, on receipt
of proper signals from the arming system,
or by manual operation, functions so as to
place the nuclear system in an armed or
"safed" condition,
overpressure
The transient pressure, usually expressed in
pounds-per-square-—inch, exceeding atmospheric
pressure, manifested in the blast wave from
the explosion,
The exact distribution is a
function of time and of the weapon yield and
the medium in which the weapon is detonated,
plasma physics
The science of dealing with the study of
fully ionized gases,
~
predetonation
1.
The premature explosion of the high
explosive charge in an atomic weapon of the
implosion-type, or of the propellant in an
atomic weapon of the gun-type, before the
weapon has reached the predesignated point
of burst in its trajectory.
2,
The premature commencement of fission of
the active material in an atomic weapon
before the designed criticality is achieved,
preinitiation
The premature commencement of fission of the
active material in an atomic weapon before
the designed criticality is achieved,
Rad-Safe Program
(Radiological Safety)
The prescribed (by AEC) system of insuring
safe control of radioactivity received by
personnel;
included handling, decontamination,
pilot and crew exposure,
radiac
Radioactive.
When used in connection with
"instruments" or "detector," indicates device
to measure and/or record radiation exposure.
roentgen
The quantity of X or gamma radiation such
that the associated corpuscular emission per
0.001293 grams of air produces, in air, ions
carrying one electrostatic unit of electricity
of either sign,
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