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- The process of excitation is one of the major means by which matter absorbs pulses of electromagnetic energy (photons), such as light, and by which it is heated or ionized by the impact of charged particles, such as electrons and alpha particles.
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A basic and easy-to-understand overview of GCSE Physics, with a particular focus on excitation and ionisation in the topic of Electrons and Energy Level.
What is the electrostatic force strength between an electron and a proton separated by 4.76 × 10 −10 m (2nd excited state)? Balancing the centripetal force to the electrostatic force for the hydrogen atom calculate the speed of an electron that would be orbiting the proton (the hydrogen atom).
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Revision notes on 5.4.1 Electromotive Force & Internal Resistance for the AQA A Level Physics syllabus, written by the Physics experts at Save My Exams.
excitation, in physics, the addition of a discrete amount of energy (called excitation energy) to a system—such as an atomic nucleus, an atom, or a molecule —that results in its alteration, ordinarily from the condition of lowest energy (ground state) to one of higher energy (excited state).
- The Editors of Encyclopaedia Britannica
Excitation is the result of energy being given to an electron moving it to a higher energy level. It will still orbit the nucleus, unless the electron energy level is greater than the ionisation energy level of the atom. Ionisation. If enough energy is given to the electron to remove it from the atom ionisation has occurred.
An excited state is a higher energy state of an atom or molecule compared to its ground state. In this state, an electron has been promoted to a higher energy level, storing potential energy that can be released through various processes.
