Surface-electrode decelerator and deflector for Rydberg atoms and molecules

被引:38
作者
Allmendinger, P. [1 ]
Deiglmayr, J. [1 ]
Agner, J. A. [1 ]
Schmutz, H. [1 ]
Merkt, F. [1 ]
机构
[1] ETH, Phys Chem Lab, CH-8093 Zurich, Switzerland
来源
PHYSICAL REVIEW A | 2014年 / 90卷 / 04期
基金
瑞士国家科学基金会; 欧洲研究理事会;
关键词
NEUTRAL MOLECULES; SUPERSONIC BEAMS; MAGNETIC-FIELDS; HYDROGEN; MANIPULATION; COLLISIONS; RADICALS; MOTION; STATE;
D O I
10.1103/PhysRevA.90.043403
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A surface-electrode decelerator and deflector for Rydberg atoms and molecules has been developed with the goal of performing collisional experiments. Translationally cold H-2 molecules in a supersonic beam were excited to Rydberg-Stark states of principal quantum number n = 31, loaded into electric traps moving at a predetermined speed above the surface of a bent printed circuit board, decelerated, and deflected from the original direction of the supersonic beam by an angle of 10 degrees. The phase-space characteristics of the deflected beam were characterized by measuring the time-of-flight distribution and images of the Rydberg molecules and comparing them to the results of numerical particle-trajectory simulations. More than 1000 H-2 molecules were deflected per experimental cycle at a repetition rate of 25 Hz. The phase-space characteristics of the deflector make it attractive to study ion-molecule reactions at low collision energies.
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页数:7
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