Radiation Calibration technique

Question 1

The maximum allowable dose is limited to ____ mSv per year for people working with radiation

Answer 1

20

Question 2

The measurement of radiation is called

Answer 2

dosimetry

Question 3

the equipment used for dosimetric procedures is called a ___ or a ___.

Answer 3

dosimeter, detector

Question 4

Detectors according to the principle of operation:

Answer 4

a) Pulse type
b) Current type

Question 5

Detectors according to their structures:

Answer 5

a) Gas-filled detectors:

b) Solid-state detectors:

Question 6

are collected and converted into an
electrical signal (impulse or current) when
they pass through an electrical field.

Answer 6

ion pairs

Question 7

are the two main types of measuring
instrument.

Answer 7

Ion chambers and Geiger–Müller counters

Question 8

This is designed to measure the dose rate
of ionizing radiation in mR/h or R/h.

Answer 8

Ion chamber

Question 9

The detector usually takes the form of a
cylinder that is filled with air.

Answer 9

Ion chamber

Question 10

are used for the measurement of X-rays, gamma rays, and beta particles.

Answer 10

Ion chambers

Question 11

consists of a tube filled with
“Q-gas” (98% helium and 1.3% butane).

Answer 11

GM counter

Question 12

does not differentiate
between types of radiation or their
energies.

Answer 12

GM counter

Question 13

are usually used to simply
detect the presence of radioactive material.

Answer 13

GM counters

Question 14

are used to detect low-energy
X and gamma rays.

Answer 14

GM counters

Question 15

is the oldest and most
popular system that is used to determine
the dose taken a person working with
radiation.

Answer 15

film dosimeter

Question 16

A dosimeter consists of two main parts:

Answer 16

film and its holder.

Question 17

is the phenomenon where a material
luminesces (emits significant amounts
of light glows) when it is heated.

Answer 17

Thermoluminescence

Question 18

can separately measure gammas, X-rays, beta particles, and thermal neutrons with energies of between _____.

Answer 18

TLDs, 10 keV and 10 MeV

Question 19

One device that can be used to measure high doses is the

Answer 19

ESR/alanine dosimeter.

Question 20

is a tissue equivalent material due to its characteristics (e.g., composition, density, and effective atomic number).

Answer 20

Alanine

Question 21

– These dosimeters are sensitive to low-
energy thermal neutrons with energies of
between 0.02 and 50 eV.

Answer 21

Neutron Dosimeter

Question 22

They utilize lithium and copper TLD crystals, and can be used to measure neutron doses of between 0.005 mSv and 0.5 Sv.

Answer 22

Neutron Dosimeter