Module 1.13 Radiation Detector Theory

Which type of radiation can only be stopped by heavy lead shielding?

What is the chamber in which fission occurs called?

Scintillation detectors convert γ-ray energy into ___

When do p-waves arrive at a detector?

In scintillation detectors, photons are absorbed by the __ of the PMT and emit photoelectrons

What category is Scintillation Detector

Leakage radiation may not exceed _____.

advantages of a GeLi detectors

The energy released by a fission or fusion reaction; the binding energy of the atomic nucleus?

A theory of the origin of the Universe is......

types of radiation

gas filled detectors include include the

what is resistance

1 example of Chemical detector

what is a function of the gas amplification that occurs

Which produces more energy--nuclear fission or nuclear fusion?

opposite electrical charges attract each other

the GM detector is more sensitive than the ION chamber or Proportional counter

in a proportional detector, the detector output is proportional to the total ionization product in the detector

What are the three tools to limit radiation exposure?

What are the recognized methods of protecting against Radiation?

ion chamber

when slow neutrons strike an atom of__ an alpha particle is emitted

recombination,ion chamber, proportional,limited proportional,gieger-mueller, continuous discharge

is the time from the initial pulse until another pulse can be produced by the detector

radiation interacts with atoms in the intrinsic region to produce electron hole pairs

Gas filled detectors have been replaced by

Cell sensitivity to radiation is directly proportional to mitotic ability and inversely to specialization was the theory

opposite electrical charges of equal value cancel each other

A particle released during the fission of uranium-235 is a(n)_____.

is the time from initial measured pulse until another pulse can be measured by electronics

a series of electrodes used to amplify the signal

what is the electrical potential difference that causes electrons to flow in a circuit

Parameter below that can affect the number of ion pairs collected in a gas filled detector is

Which of the following electrical terms is defined as the movement of electrons past a given point in the circut

the movement,or flow of electrons past a given circuit

is the time from the initial full size pulse to the next full size pulse produced by the detector

The parameter below that can affect the number of ion pairs collected in a gas filled detector

like electrical charges

the unit ohm is used to measure

two types of current

when the voltage is increased, for example, the detector output also increases

analyzing pulse heights is the primary method of electronic discrimination

what provides an output pulse that is proportional to the incident photons

types of radiation

current is measured in

voltage is measured in

radiation excites the atoms of the detector material,gives off the excess energy as visible light

Film Badge is in which catagory

Who is this? Developed a detector for radiation

recombination,ion chamber, proportional,limited proportional,gieger-mueller, continuous discharge

define electrical potential difference that causes electrons to flow in a circut

The unit volt is used to measure

Form of radiation with the greatest penetrating power

radiation excites the atoms of the detector material,gives off the excess energy as visible light

An electron and a proton

Nuclear fission is the formation of elements through.....

types of radiation

What is shielding?

Form of radiation with the greatest penetrating power

Both a fusion reaction and a fission reaction ____.

The unit ampere is used to measure

the purpose of the __is to convert the light photons to electrons, called photoelectrons

The ionization of______is the basis for gas-filled radiation detectors.

Which type of radiation can be stopped by a sheet of aluminium

HPGe detectors are more

Define electrical quantity that opposes electron flow in a circut

the incident radiation interacts with the detector material to produce an observable effect

various materials have the ability to absorb neutrons of a specific energy and become radioactive by the ?

measures and analyze the observable effect produced by the detector and provides a usable output indication

All of the frequencies or wavelengths of electromagnetic radiation