[Reminder] IAMS Lecture on Mar 19, 3:30pm, Dr. Poe Lecture Hall, Prof. Zong-Chao Yan 嚴宗朝
消息來源：原分所
截止日期：2015-05-19
Title: Hydrogen negative ion, critical charge, and shape resonances
Speaker: Prof. Zong-Chao Yan 嚴宗朝教授 (Department of Physics, University of New Brunswick, Canada)
Time: 3:30 PM, May 19 (Tuesday)
Place: Dr. Poe Lecture Hall, IAMS (本所浦大邦講堂 臺大校園內)
Contact: Dr. Yew Kam Ho 何耀錦博士
Abstract:
The hydrogen negative ion H-, a three-body Coulombic system, is not only important in astrophysics, but also fundamental in understanding correlations between the two electrons [1]. Historically, this system has attracted great attention from many physicists, including Bethe, Chandrasekhar, and Herzberg. Even up to now, this system continues to be interesting [2]. In this talk I will first give a brief review about H-. I will then present our much improved determination of the energy eigenvalue of the metastable 2p2 3Pe state of H- and the new determination of the critical charge Zc of the same state, using highly correlated wave functions. As the nuclear charge Z is further reduced from Zc, a series of shape resonances are located for the first time with their corresponding positions and widths being determined precisely.
[1] A. R. P. Rau, J. Astrophys. Astr. 17, 113 (1996).
[2] C. S. Estienne, M. Busuttil, A. Moini, and G. W. F. Drake, Phys. Rev. Lett. 112, 173001 (2014).
Speaker: Prof. Zong-Chao Yan 嚴宗朝教授 (Department of Physics, University of New Brunswick, Canada)
Time: 3:30 PM, May 19 (Tuesday)
Place: Dr. Poe Lecture Hall, IAMS (本所浦大邦講堂 臺大校園內)
Contact: Dr. Yew Kam Ho 何耀錦博士
Abstract:
The hydrogen negative ion H-, a three-body Coulombic system, is not only important in astrophysics, but also fundamental in understanding correlations between the two electrons [1]. Historically, this system has attracted great attention from many physicists, including Bethe, Chandrasekhar, and Herzberg. Even up to now, this system continues to be interesting [2]. In this talk I will first give a brief review about H-. I will then present our much improved determination of the energy eigenvalue of the metastable 2p2 3Pe state of H- and the new determination of the critical charge Zc of the same state, using highly correlated wave functions. As the nuclear charge Z is further reduced from Zc, a series of shape resonances are located for the first time with their corresponding positions and widths being determined precisely.
[1] A. R. P. Rau, J. Astrophys. Astr. 17, 113 (1996).
[2] C. S. Estienne, M. Busuttil, A. Moini, and G. W. F. Drake, Phys. Rev. Lett. 112, 173001 (2014).