Abstract Ambient pressure DC-only drift tubes were constructed with one and two turns along the drift path using 3D printing and experimental data was compared to simulations. Turning was achieved using electrodes with 10°, 45° or 90° angles, arranged in various configurations. The performance of drift tubes comprised of nine (one turn) or eighteen (two turns) 10° electrodes was superior to those that achieved the same total angle but used 45° or 90° electrodes. Deviations in the spatial homogeneity of the electric field between the inside and outside of the turns in 45° and 90° electrode systems resulted in wide ion arrival time distributions. Drift tubes containing two turns in opposite directions improved ion arrival time distributions. Unlike the large reductions seen in performance using other geometries, a drift tube containing two opposite direction turns with 10° turning electrodes resulted in only a 1.4 times reduction in resolving power when compared to a straight drift tube of the same path length. Turned drift paths will allow for longer path lengths in a reduced size profile for drift tube ion mobility spectrometers operated at atmospheric pressure.

中文翻译：

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环境压力漂移管中离子的时间分布与转弯

摘要 使用 3D 打印技术沿漂移路径构造了 1 匝和 2 匝的环境压力仅直流漂移管，并将实验数据与模拟进行了比较。使用以各种配置排列的 10°、45° 或 90° 角的电极实现车削。由九个（一圈）或十八个（两圈）10°电极组成的漂移管的性能优于那些实现相同总角度但使用45°或90°电极的漂移管。在 45° 和 90° 电极系统中，匝的内侧和外侧之间电场空间均匀性的偏差导致离子到达时间分布较宽。包含两圈相反方向的漂移管改善了离子到达时间分布。与使用其他几何图形的性能大幅下降不同，与相同路径长度的直漂移管相比，包含两个相反方向转向和 10°转向电极的漂移管导致分辨率仅降低 1.4 倍。对于在大气压力下运行的漂移管离子迁移谱仪，转向漂移路径将允许在减小的尺寸轮廓中更长的路径长度。