Dosimetric Devices

Question 1

What types of dosimeters are used as whole-body dosimeter?

Answer 1

DT-702/PD LiF (MCuP)
Electronic Personal Dosimeter (EFD)

Question 2

What is the primary dosimeter?

Answer 2

DT-702/PD LiF (MCuP)

Question 3

What is the secondary dosimeter used in high radiation areas?

Answer 3

Electronic Personal Dosimeter (EFD)

Question 4

What is a DT-518/PD?

Answer 4

Neutron accident dosimeter.

Question 5

Details about chip postion 1 of a liF TLD.

Answer 5

Detects: Low Energy Photons
Chip type: Li 7
Dose type: Eye Dose Equivalent

Question 6

Details about chip postion 2 of a liF TLD.

Answer 6

Detects: High Energy Photons
Chip type: Li 7
Dose Type: Deep Dose Equivalent- Photon

Question 7

Details about chip postion 3 of a liF TLD.

Answer 7

Detects: Beta and Photon
Chip type: Li 7
Dose Type: Shallow Dose Equivalent (skin)

Question 8

Details about chip postion 4 of a liF TLD.

Answer 8

Detects: Low Energy Photon and Neutron
Chip type: Li 6
Dose type: Deep Dose Neutron Equivalent

Question 9

How is a LiF TLD chip position read?

Answer 9

U shape

Question 10

What are some factors that can affected a TLD?

Answer 10

• Dirty
• Damaged
• Sunlight and Fluorescent light
• Static electricity or electrical damage
• damaged case
• not worn correctly

Question 11

Basic principle behind Thermoluminescence

Answer 11

Irritated crystals have elections that moved up in energy. The crystals emit a visible light when heated, that is proportional to dose

Question 12

Operation of an electronic personnel dosimeter

Answer 12

Solid state electronic radiation is converted in a current via interactions with the chip which can be converted into a dose and dose rate.