Post on 25-May-2015
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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