atomic particle

The wave-function of the system of single-mode field interacting with N-type four-level atom is solved exactly, and the time-evolution of atomic particle's occupancy is analyzed by means of numerical method.

精确求解了单模光场与N型四能级原子相互作用系统的波函数，并采用数值计算方法，分析了原子布居的时间演化特性。

Ionization dominates if the particle has an energy larger compared to atomic binding energies.

若入射粒子能量大于原子的束缚能则电离是主要的.

Scientists yesterday offered a tantalising glimpse of a sub-atomic fragment sometimes called the "God particle" because it gives substance to all matter in the universe.

科学家们昨日让外界瞥见一个亚原子碎片的迷人风采，这种碎片有时被称为“上帝粒子”，因为它是宇宙中所有物质的质量之源。

Neutron is an elementary particle that exists inside the atomic nucleus.

中子是一种基本粒子,存在于原子核内.

Any of three processes of radioactive disintegration in which a Beta particle is spontaneously emitted by an unstable atomic nucleus in order to dissipate excess energy.

某些不稳定原子核为耗散其过剩能量而自发发射一个β粒子的三种放射性衰变过程的统称。