Formation of positron-atom bound states in collisions between Rydberg Ps and neutral atoms
Formation of positron-atom bound states in collisions between Rydberg Ps and neutral atoms
复制标题
里德伯粒子与中性原子碰撞时正电子原子束缚态的形成
DOI：
10.1103/physreva.93.052712
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发表时间：
2016
影响因子：
2.9
通讯作者：
G. Gribakin
中科院分区：
文献类型：
--
作者：
A. Swann;D. Cassidy;A. Deller;G. Gribakin
Predicted 20 years ago, positron binding to neutral atoms has not yet been observed experimentally. A scheme is proposed to detect positron-atom bound states by colliding Rydberg positronium (Ps) with neutral atoms. Estimates of the charge-transfer reaction cross section are obtained using the first Born approximation for a selection of neutral atom targets and a wide range of incident Ps energies and principal quantum numbers. We also estimate the corresponding Ps ionization cross section. The accuracy of the calculations is tested by comparison with earlier predictions for charge transfer in Ps collisions with hydrogen and antihydrogen. We describe an existing Rydberg Ps beam suitable for producing positron-atom bound states and estimate signal rates based on the calculated cross sections and realistic experimental parameters. We conclude that the proposed methodology is capable of producing such states and of testing theoretical predictions of their binding energies.
正电子的产生和散射低于其分解阈值。
影响因子：
8.6
作者：
Brawley SJ
通讯作者：
Brawley SJ
DOI：
10.1088/0953-4075/48/20/204003
发表时间：
2015-09
期刊：
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子：
--
作者：
S. Andersen;D. Cassidy;J. Chevallier;B. Cooper;A. Deller;T. Wall;U. Uggerhøj
通讯作者：
S. Andersen;D. Cassidy;J. Chevallier;B. Cooper;A. Deller;T. Wall;U. Uggerhøj
针对正电子激光光谱优化的基于陷阱的脉冲正电子束。
DOI：
10.1063/1.4931690
发表时间：
2015
期刊：
The Review of scientific instruments
影响因子：
--
作者：
Cooper BS
通讯作者：
Cooper BS