Ion generation and loading of a Penning trap using pulsed laser ablation. (14th January 2020)

• Record Type: Journal Article
• Authors: Sameed, Muhammed; Maxwell, Daniel; Madsen, Niels
• Is Part Of: New journal of physics. Volume 22:Number 1(2020:Jan.)
• Publication Date: 2020-01-14
• Subjects: pulsed laser ablation -- beryllium -- sympathetic cooling -- antihydrogen -- ion generation -- ion trapping -- Penning trap; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/ab6066
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We investigated the production of aluminum and beryllium ions via pulsed laser ablation using 355 nm wavelength and 5 ns long laser pulses. The ablation threshold of Al + and Be + was measured to be 0.9 ± 0.1 (stat.) ± 0.3 (syst.) J cm −2 and 1.4 ± 0.1 (stat.) ± 0.4 (syst.) J cm −2 respectively. By employing electrostatic retarding potentials, the kinetic energy profile of the ablated ions was characterized as a function of laser fluence. Around the ablation threshold, we reliably produced between 10 8 and 10 10 ions, approximately 5% of which were dynamically trapped in a Penning–Malmberg trap.