正电子束在磁偶极阱中的注入和束缚

IF 2.2 3区物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS

Physical Review E Pub Date : 2024-08-09 DOI:10.1103/physreve.110.l023201

A. Deller, J. von der Linden, S. Nißl, K. Michishio, N. Oshima, H. Higaki, E. Stenson

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引用次数: 0

摘要

我们展示了将脉冲正电子束高效注入磁偶极子阱的过程，并研究了不均匀电场和磁场中的粒子动力学。利用无损 E×B 漂移技术，将一束束 ∼105e+从缓冲气阱转移到永久磁铁的磁场中。与环形旋转周期τd≈16µs和e+禁锢时间τc≈0.6 s相比，Δt≈0.2µs脉冲时间很短。这项工作将偶极阱中容纳低能正电子的数量记录扩大了两个数量级，标志着在约束电子-正电子对等离子体方面取得了重大进展。美国物理学会出版 2024

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Injection and confinement of positron bunches in a magnetic dipole trap

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Injection and confinement of positron bunches in a magnetic dipole trap

We demonstrate the efficient injection of a pulsed positron beam into a magnetic dipole trap and investigate the ensuing particle dynamics in the inhomogeneous electric and magnetic fields. Bunches of ∼105e+ were transferred from a buffer-gas trap into the field of a permanent magnet using a lossless E×B drift technique. The Δt≈0.2µs pulses were short compared to the toroidal rotation period, τd≈16µs, and e+ confinement time, τc≈0.6 s. The redistribution dynamics were studied by measuring the delayed γ-ray emission as the trap was emptied. This work extends the record for the number of low-energy positrons held in a dipole trap by two orders of magnitude and represents a significant advance toward the confinement of an electron-positron pair plasma. Published by the American Physical Society 2024

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来源期刊

Physical Review E PHYSICS, FLUIDS & PLASMASPHYSICS, MATHEMAT-PHYSICS, MATHEMATICAL

CiteScore

4.50

自引率

16.70%

发文量

2110

期刊介绍： Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.