How does the scintillation counter work?
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How does the scintillation counter work?
Scintillation Counter is Used to Measure Radioactivity Radioactive DNA is mixed with a liquid scintillant. The scintillant molecules absorb the β-particles emitted by the 32P in the DNA, and in turn emit a flash of light. The photocell counts the number of light pulses in a specific time period.
What are the two types of scintillation counters?
Types of Scintillation Counters They are: Plastic or organic scintillators and. Crystalline scintillators or inorganic scintillators.
What is the purpose of a scintillator?
Scintillators are materials that are able to convert high energy radiation such as X or gamma-rays to a near visible or visible light. They are widely used as detectors in medical diagnostics, high energy physics and geophysical exploration (ref. Knoll).
What is the process of scintillation?
Scintillation is the process in which the energy from a certain radiation interacting with a volume of sensitive material (called a scintillator) is converted into electromagnetic waves. The frequency of the emitted electromagnetic waves is within or near the visible spectrum.
What are the basic parts of scintillation counter?
A scintillation counter is composed of four main components: a sheet of scintillator, a light guide, a photomultiplier and the electronics in the p.m. base required to drive the photomultiplier and read out the signal.
What is the main detector of a scintillation counter?
scintillation counter, radiation detector that is triggered by a flash of light (or scintillation) produced when ionizing radiation traverses certain solid or liquid substances (phosphors), among which are thallium-activated sodium iodide, zinc sulfide, and organic compounds such as anthracene incorporated into solid …
What is a scintillator made of?
The most common glass scintillators are cerium-activated lithium or boron silicates. Since both lithium and boron have large neutron cross-sections, glass detectors are particularly well suited to the detection of thermal (slow) neutrons.
