Atomic Nucleus

Originates: in the nucleus

alpha particles are monoenergetic
range in matter is very short

Z # decreases by 2
A # decreases by 4

Originates: nucleus

A neutron rich nucleus converts a N -> P+
An electron is created

B/c the Z # changed, a new element is formed

Antineutrino is created
(no electrical charge/mass)

needed to conserve energy in the decay
it carries away the difference between B-
particle energy and the decay energy.

Ex. I-131 -> Xe-131

change in the extranuclear portion of an atom from a high energy level to a lower level accompanied by the release of EM radiation = gamma radiation

Occurs if there is more than 100 keV of excess energy,

Ex. Mo99-Tc-99m

Originates: nucleus

when the e+ is created it looses energy b/c its
colliding with surrounding matter, it gets attracted
to an electron and they spiral towards one another
before annihilation.
(mass of the e+ and e- is converted into pure EM
energy)

Neutrino is created

Occurs when a orbital electron travels close to
the Proton rich nucleus
It is captured, and combined with a P+ to form a N

X-rays are emitted