Radiation Detectors
OBJECTIVES
TERMINAL OBJECTIVE
2.0
SUMMARIZE the principles of operation of various types of radiation detectors.
ENABLING OBJECTIVES
2.1
DESCRIBE the operation of a proportional counter to include:
a.
Radiation detection
b.
Quenching
c.
Voltage variations
2.2
Given a block diagram of a proportional counter circuit, STATE the purpose of the
following major blocks:
a.
Proportional counter
b.
Preamplifier/amplifier
c.
Single channel analyzer/discriminator
d.
Scaler
e.
Timer
2.3
DESCRIBE the operation of an ionization chamber to include:
a.
Radiation detection
b.
Voltage variations
c.
Gamma sensitivity reduction
2.4
DESCRIBE how a compensated ion chamber compensates for gamma radiation.
2.5
DESCRIBE the operation of an electroscope ionization chamber.
2.6
DESCRIBE the operation of a Geiger-Müller (G-M) detector to include:
a.
Radiation detection
b.
Quenching
c.
Positive ion sheath
2.7
DESCRIBE the operation of a scintillation counter to include:
a.
Radiation detection
b.
Three classes of phosphors
c.
Photomultiplier tube operation
Rev. 0
Page ix
IC-06
