ionization chamber
Học thuậtThân thiện
Definition
Noun: A scientific instrument designed to detect and measure ionizing radiation by quantifying the electrical charge produced when radiation ionizes a gas within a contained volume.
Usage
The term "ionization chamber" is used specifically to refer to a type of radiation detector. It functions by collecting the ions (electrically charged particles) created when radiation passes through a gas-filled chamber, allowing the intensity of the radiation to be measured.
Examples
- The laboratory used a calibrated ionization chamber to measure the exact dose of X-rays.
- Safety protocols require checking the ionization chamber readings before entering the controlled area.
- In the experiment, the ionization chamber detected a small but significant increase in background radiation.
Advanced Usage
- "Operate an ionization chamber in current mode": This refers to using the instrument to measure a continuous electrical current generated by constant radiation, as opposed to counting individual pulses of charge.
- "Free-air ionization chamber": A specific, primary standard design used for precise calibration of X-ray beams in metrology laboratories.
Variants and Related Words
- Ionization (noun): The process by which an atom or molecule acquires a negative or positive charge by gaining or losing electrons.
- Ion chamber (noun): A common abbreviated form for "ionization chamber."
- Chamber (noun): In this context, a sealed enclosure or compartment.
Synonyms
- Radiation detector
- Ion chamber
- Gas-filled detector (when specifying this broad category)
Related Phrases
- "Ionization chamber survey meter": A portable, hand-held device containing an ionization chamber, used for radiation surveys and safety checks.
- "Sealed ionization chamber": A chamber with a permanently enclosed gas volume, as opposed to one that allows gas flow.
Noun
- a measuring instrument that measures the amount of ionizing radiation