Influence of the space charge of an ion beam on the time-of-flight diagnostics of its composition

Autor:	Mingkai Lei, A. I. Prima, A. I. Pushkarev, Yanghui Li, X.P. Zhu, Yu. Egorova, C. C. Zhang
Rok vydání:	2019
Předmět:	010302 applied physics Materials science Ion beam business.industry Pulse duration Faraday cup Pulsed power 01 natural sciences Space charge Collimated light 010305 fluids & plasmas Ion symbols.namesake Optics 0103 physical sciences symbols business Instrumentation Diode
Zdroj:	Review of Scientific Instruments. 90:103303
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.5116598
Popis:	The results of time-of-flight diagnostics of the composition of high-intensity pulsed ion beams are presented. The experiments were performed on a diode of focusing and flat geometry, in the mode of self-magnetic insulation of electrons (accelerating voltage 250–300 kV, pulse duration 120 ns, ion current density 20–300 A/cm2), and a focusing diode in an external magnetic insulation mode (300 kV, 80 ns, 100–200 A/cm2). A delay in the registration of protons by 40–50 ns (on the drift path 14–16 cm) was found in the absence of a delay in the registration of heavy ions. It has been shown that this delay can be related to the deceleration of light ions during the transport from the diode to a collimated Faraday cup. This effect of spatial compression of the ion beam in the direction of the drift increases its pulse power but complicates the time-of-flight diagnostics of its composition.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::13b3272f6dc17e545c59fc959ab5a108 https://doi.org/10.1063/1.5116598 Zobrazit plný text záznamu