0 an atom or small group of atoms that has an electrical charge because it has added or lost one or more electrons -- 离子
1 added to verbs to form nouns showing action or condition -- （加在动词后构成名词表示“行为，状态”）
obsession 着魔
restoration 恢复
repetition 重复
The plume density is about 7.7 10 20 ions 0m 3.
Entry and exit of ions into the simulation region can be represented as a first-order process.
Here, cos represents the radial dispacement of the passing ion.
The maximum position of the bremsstrahlung radiation cross-section gets closer to the target ion with increasing nonideal-plasma parameter.
In this process, the energy absorbed by the electrons during the interaction with the laser pulse is converted into both radiation and ion kinetic energy.
Characteristics of ion emission from plasma produced by high-energy short-wavelength (438 nm) laser radiation.
In order to define a radius for the ion one needs a constant value for the radius of the water.
A force that exists only between charged molecules (ions) or surfaces.
