In condensed matter physics, scintillation (/ ˈ s ɪ n t ɪ l eɪ ʃ ən / SIN-til-ay-shun) is the physical process where a material, called a scintillator, emits ultraviolet or visible light under excitation from high energy photons (X-rays or gamma rays) or energetic particles (such as electrons, alpha particles, neutrons, or ions).

Ionospheric scintillation is the rapid modification of radio waves caused by small scale structures in the ionosphere. Severe scintillation conditions can prevent a GPS receiver from locking on to the signal and can make it impossible to calculate a position.

2023年5月19日 · Scintillation of radio waves impacts the power and phase of the radio signal. Scintillation is caused by small-scale (tens of meters to tens of km) structure in the ionospheric electron density along the signal path and is the result of interference of refracted and/or diffracted (scattered) waves. How does scintillation work?

The meaning of SCINTILLATION is an act or instance of scintillating; especially : rapid changes in the brightness of a celestial body.

A scintillator (/ ˈsɪntɪleɪtər / SIN-til-ay-ter) is a material that exhibits scintillation, the property of luminescence, [1] when excited by ionizing radiation. Luminescent materials, when struck by an incoming particle, absorb its energy and scintillate (i.e. re-emit the absorbed energy in …

The scintillation mechanism is one of molecular excitation (e.g., by absorbing energy from a γ ray or β particle) followed by a deexcitation process in which visible light is emitted. These substances are scintillators whether they are in solid, liquid, or gaseous forms.

Scintillation can refer to: Scintillation (astronomy), atmospheric effects which influence astronomical observations; Interplanetary scintillation, fluctuations of radio waves caused by the solar wind; Scintillation (physics), a flash of light produced in certain materials when they absorb ionizing radiation

2024年3月30日 · Ionospheric scintillation is a phenomenon that occurs in the Earth’s ionosphere, a region of the atmosphere that extends from about 30 miles to 600 miles above the Earth’s surface. It is characterized by rapid fluctuations in the amplitude and phase of radio signals passing through the ionosphere.

2004年7月11日 · Scintillation is an example of radioluminescence wherein the absorption of high-energy radiation or particles leads to observable light. Scintillators may be organic and inorganic solids, liquids, and gases; here we limit the discussion to inorganic solid-state detector materials for medical imaging using X-rays and gamma rays.

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).