声致发光气泡中原子碰撞发光机制

Collision induced radiation in sonoluminescing bubble

文章导出一种由两个中性的惰性气体原子之间的碰撞引起的电四极辐射几率。对于热平衡的惰性气体系统 ,推导出由碰撞引起的总辐射能量的公式 (单位体积 ,在给定波长的每单位波长 )。考虑到气体的吸收和周围环境水的折射 ,用此公式拟合纯氙和纯氪的单气泡声致发光的实验光谱 ,拟合温度大约为 5 ,0 0 0k ,结果令人满意。

We educe a probability of the electric quadrupole emission of a photon induced by collision between two neutral atoms of inert gases. For heat equilibrium system of inert gas, we deduce the formula of the collision induced total radiation power per unit volume, per unit wavelength at the given wavelength. Considering the absorption of the gas and refraction of surrounding water, the formula apply to fit the experimental spetra of sonoluminescent pure xenon and pure krypton bubbles, the fits are shown to be quite well correspond to temperature about 5,000K. The good agreement obtained demonstrate the new light emitting mechanism of sonoluminescence of xenon and krypton bubble.