What is Radiation?

Radiation is a process in which energetic particles or

energy or waves travel through a medium or space.

RADIATION

DETECTION

DEVICES

What are radiation detection devices?

• Instruments that can identify the presence of radiation – In the environment – On the surface of people (external contamination) – Inside people (internal contamination) – Received by people as exposure

Radiation Detection Devices

Devices:

• Geiger Mueller (GM) Detectors with Pancake Probes

• Alpha Radiation Survey Meter• Dose Rate Meter• Personal Dosimeters• Newer Radiation Detection Devices

Geiger Mueller (GM) Detectors with Pancake Probes

• Detects and measures radiation in the environment in real time.

Alpha Radiation Survey Meter

• Radiation survey meter with probe appropriate for detecting alpha radiation.

Dose Rate Meter

• This survey meter measures environmental levels of penetrating, ionizing radiation May be used to determine whether it is safe to enter an area and, if so, for how long

• Provide readings in units of roentgens per unit time (e.g., mR/hr)

Personal Dosimeters

• A small radiation monitoring device worn by persons entering environments that may contain radiation .

Newer Radiation Detection Devices

• Multiple functions can be provided by one device

- Identify isotopes - Measure dose - Measure dose rate - Alarm for pre-set

conditions - Monitor several types of

contamination: alpha, beta, gamma

Handheld gamma-ray spectrometer

Less portable detection device