摘要
分析了 Al等离子体连续辐射特征。根据连续辐射强度的时间分布 ,简要讨论了激光诱导等离子体连续辐射的产生机理。根据连续辐射强度的波长分布 ,提出了原子对激光诱导等离子体连续辐射共振吸收理论。我们认为 :Al原子吸收能量的主要机制是原子实吸收连续辐射光子 ,原子实吸收光子的方式是与价电子构成极性振子对连续辐射共振吸收。
The continuum radiation of Aluminum plasma was studied based on the records.According to the distribution of time resolved relative intensity of continuum emission of the plasma induced by laser ablating Al in Ar,we have briefly discussed the mechanism of the continuum radiation of the plasma induced by laser ablating Aluminum.On the basis of wavelength distribution of the continuum emission,we suggested that atom Al resonantly absorbing continuum radiation was absorbs energy by atom solid,which consists of atomic nucleus and valence electrons of atom Aluminum,absorbing the photons in continuum radiation.Atom solid absorbs photons by polar vibrator,which is composed of atom solid and valence electrons of atom Al,resonantly absorbing the phones in continuum radiation.
出处
《激光与红外》
CAS
CSCD
北大核心
2000年第4期216-219,共4页
Laser & Infrared
基金
国家自然科学基金资助项目 !( 699780 11)
关键词
激光诱导
等离子体
AL原子
能量吸收
laser ablate
polar vibrator
atom solid
time resolved spectrum
bremsstrahlung
compound radiation.
