Global Jihad: temi, piste di diffusione e il fenomeno del reducismo ...

(heat) and ionising radiation; there is also a more delayed effect which manifests
from hours after the event and can persist for centuries afterwards which cause
health
and environmental damage due to radioactive fallout. The immediate effects
are confined to the area surround the detonations whilst
then delayed effect can
manifest in more diverse geographical locations.
Radiological terrorism, by contrast, refers to dispersal
devices designed to use or
distribute radioactive material
to cause a harmful
someone. l weapon (popularly called a
131 The main aim in using a radiologica
radioactive material and explosive. A passive RDD
is a system in which unshielded
- often called a "dirty bomb" - is any system that uses the explosive force of
detonation to disperse radioactive material. An atmospheric RDD is any system in
which radioactive material is converted into a form that is easily transported by air
currents.
Examples of accidental contamination with an
industrial radiation sources exemplified the
potential for a terrorist group to traumatise an
unsuspecting population. A serious radiological
effect upon something or
radiological dispersal device or RDD) is therefore to utilise the radioactive material
to contaminate areas and/or injure targets, as opposed to a nuclear weapon where
the destructive explosive power is the aim and radiological contamination is merely
a secondary effect. RDDs can be almost any size, defined only by the amount of
radioactive material is dispersed or placed manually at the target. An explosive RDD
Radiological devices require no
detailed technical understanding
beyond that required for the
manipulation of the conventional
explosives which would be used in
the case of an RDD, or in basic
aerial dispersal in the case of a
radiation emission device.
131 Radioactivity is the property or condition of certain elements that results in the spontaneous transformation, or
decay, of the nucleus of an unstable atom. As the unstable atom tries to change to a stable state, it releases energy
in the form of radiation. This energy is release in one of three forms: alpha radiation, which is equivalent to a
helium nucleus and can be stopped by a thick piece of paper; beta radiation, which is equivalent to an electron
and will be stopped by human skin; and gamma radiation, which is an energy wave and capable of greater
penetration than either of the other two forms. Substances that undergo this transformation process are called
radioisotopes, or more commonly, radioactive materials. Once the substances are processed into a usable form,
such as pellets or powder, they are called radioactive sources. Depending upon the amount of energy release and
the form it takes these radioactive sources
can be classified as low-activity, intermediate-activity, or high-activity
sources.
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