Interaction of charged particles with insulating capillary targets – The guiding effect

Conceptual design and sample preparation of electrode covered single glass macro-capillaries for studying the effect of an external electric field on particle guiding

“…The phenomenon is called ''guiding effect'' and it has been intensively studied since its discovery . For a recent comprehensive review the reader is referred to Lemell et al [20]. Following the pioneering work of Stolterfoht et al [1] several groups studied the ion guiding through insulating foils like polyethylene-terephthalate (PET) [2], silicon dioxide (SiO 2 ) [4] and aluminum oxide (Al 2 O 3 ) [5,6] nanocapillaries with aspect ratios around 100.…”

“…The charging-up of the insulating wall material could be observed in time-dependent transmission measurements (see e.g. [20]). …”

“…Theoretical investigation for charged-particle transport through nano-capillaries show that guiding can be interpreted in terms of a self-organized charge-up of the capillary wall [3,12,20]. Microscopic simulations revealed that after a distributed transient charge-up of the capillary wall, a single or a few charge patches near the entrance dominate the guiding in dynamical equilibrium.…”

Study of electron transmission through a platinum tube

“…A large number of papers have been published so far on this phenomenon, which offers possibilities both to study fundamental particle-surface interaction processes and to develop interesting applications such as HCI beam for nanometer-scale fabrication and MeV proton microbeams for irradiating single cells [2,3]. A comprehensive review on the subject can be found in the recent paper by Lemell et al [4].…”

Guiding of Ar7+ ions through a glass microcapillary array

“…Slow ions can effectively be guided through tilted nanocapillaries, which were intensively studied in recent years [1,2]. The effect is due to the electrostatic charging up of the capillary walls by the incident ions, which deflects other ions to the capillary exit.…”