CAJ | 학술논문

利用了氢原子飞渡时间谱实验方法对处于高n主量子数里德堡态的氢原子与氦原子的分子束散射过程进行了高分辨研究.测量了H(n)+He→H(n′)+He 散射过程的散射微分截面.实验结果表明,产物主要分布在前向散射方向,在侧向也有一定的分布.在前向和侧向存在大量的振荡结构.同时详细的研究也表明,在上述的散射过程中往前散射的方向上,氢原子里德堡态主量子数n的变化并不是很大.实验结果得到了为理论上精确研究高n主量子数里德堡态的氢原子与氦原子的散射动力学的一套精细的实验数据.
이용료경원자비도시간보실험방법대처우고n주양자수리덕보태적경원자여양원자적분자속산사과정진행료고분변연구.측량료H(n)+He→H(n′)+He 산사과정적산사미분절면.실험결과표명,산물주요분포재전향산사방향,재측향야유일정적분포.재전향화측향존재대량적진탕결구.동시상세적연구야표명,재상술적산사과정중왕전산사적방향상,경원자리덕보태주양자수n적변화병불시흔대.실험결과득도료위이론상정학연구고n주양자수리덕보태적경원자여양원자적산사동역학적일투정세적실험수거.
A high resolution study of the high-n Rydberg H atom scattering with helium was carried out using the H atom Rydberg tagging time-of-flight technique. Differential cross sections were measured for scattering process of H(n)+He→H(n′)+He at the collision energy of 0.526 eV. Experimental result indicates that the scattered H(n′) product is mainly forward distributed, with signals observed in the wide range of angles at the sideway and forward scattering directions. At the sideway and forward directions, a lot of oscillatory structures in the angular distributions are present. Detailed analysis also shows that the principle quantum number, n, is not changed much for the Rydberg H atom at the forward scattering direction. This work provides a good test ground to investigate theoretically the exact collision dynamics between the high-n Rydberg H atom and the helium atom.