In a neutral atom, the protons in the nucleus are balanced by the electrons. An atom that has gained or lost electrons becomes negatively or positively charged and is called an ion.
在中性原子中，电子数和原子核的正电荷数相等，但有些原子可以拥有比原子核的正电荷更多或更少的电子，从而原子就带上负的或正的电荷，这类带电的原子称为离子。
We suggest a novel trap of trapping a neutral atom with static electric field of four point charges, and discuss the quantum effects of the cold neutral atom in the trap.
用四个点电荷构造一个简单、新颖的静电势阱，并基于含时薛定谔方程和有限差分时间域方法，研究冷原子在该势阱中的量子力学效应。
We suggest a novel trap of trapping a neutral atom with static electric field of four point charges, and discuss the quantum effects of the cold neutral atom in the trap.
用四个点电荷构造一个简单、新颖的静电势阱，并基于含时薛定谔方程和有限差分时间域方法，研究冷原子在该势阱中的量子力学效应。
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