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论文类型：期刊论文

发表时间：2019-10-01

发表刊物：REVIEW OF SCIENTIFIC INSTRUMENTS

收录刊物：EI、SCIE

卷号：90

期号：10

ISSN号：0034-6748

摘要：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/cm(2)), and a focusing diode in an external magnetic insulation mode (300 kV, 80 ns, 100-200 A/cm(2)). 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. Published under license by AIP Publishing.