【摘要】 本文通过光学方法,在q×（20—140）keV能量范围内,研究了He⁺和He²⁺离子与碱金属原子Na碰撞中的靶激发过程。通过光学多道分析系统（OMA）,对He⁺与Na碰撞过程,观察到NaI589.0+589.6nm（3p→3s）,NaI818.3nm（3d→3p）和NaI568.8nm（4d→3p）等谱线。对He²⁺与Na碰撞过程,只观察到 NaI589.0+589.6nm谱线。计算了所有观察到的谱线的发射截面和Na（3p）的激发截面。实验结果表明入射离子的库仑势对靶激发过程的作用非常明显。对He²⁺与Na碰撞过程,NaI D₁₇₂谱线的发射截面与仅有的Na（3p）激发截面的理论值在误差范围内符合得很好。更多还原

【Abstract】 We have studied the target atom excitations in the collisions of He+and He2+ with Na in the energy range ot q×（20-140） keV by optical measurements. The Nal 589.0 + 589.6 nm （3p→3s）, Nal 818.3nm （3d→3p） and Nal 568.8 nm（4d→3p） lines for He+ + Na collision system have been observed by an OMA system. In He²⁺ + Na collision system, only Nal 589.0 + 589.6 nm line was observed. The emission cross sections of the Nal lines observed and Na （3p） excitation cross sections are calculated. An obvious effect of coulomb potential of projectile ions on the target excitation has been observed.更多还原