3-10 State-selective Spontaneous Evolution of Rydberg Atoms into an Ultracold Plasma

• 作者: Li Yufan Ma Xinwen Yang Jie Zaheer U.Syed Zhao Dongmei
• 来源期刊: 中国科学院近代物理研究所和兰州重离子研究装置年报：英文版
• 学科: 物理学
• 年，卷（期）: zgkxyjdwlyjs-e_2016,（1）
• 页码范围: 85-86
• 页数: 2页
• 分类号: O4

摘要

We measured the state distribution of cold Rydberg atoms for various initially excited Rydberg levels and evolution times in order to investigate the collision-induced dynamics.The cold Rydberg atoms were excited into nP states(n=20,25,30,…,97)below the ionization potential.Immediately after the excitation the hot electrons were detected as shown in Fig.1(a),which are due to the slow ionization caused by the collision between hot Rydberg atoms and cold Rydberg atoms[1].A pulsed electric field(~300 mV/cm)was applied after few microseconds and obtained a second peak,that indicates the plasma electrons.