In:
Crystals, MDPI AG, Vol. 10, No. 9 ( 2020-09-19), p. 837-
Abstract:
The interaction of high-intensity laser pulses with solid targets can be used as a highly charged, energetic heavy ion source. Normally, intrinsic contaminants on the target surface suppress the performance of heavy ion acceleration from a high-intensity laser–target interaction, resulting in preferential proton acceleration. Here, we demonstrate that CW laser heating of 5 µm titanium tape targets can remove contaminant hydrocarbons in order to expose a thin oxide layer on the metal surface, ideal for the generation of energetic oxygen beams. This is demonstrated by irradiating the heated targets with a PW class high-power laser at an intensity of 5 × 1021 W/cm2, showing enhanced acceleration of oxygen ions with a non-thermal-like distribution. Our new scheme using a CW laser-heated Ti tape target is promising for use as a moderate repetition energetic oxygen ion source for future applications.
Type of Medium:
Online Resource
ISSN:
2073-4352
DOI:
10.3390/cryst10090837
Language:
English
Publisher:
MDPI AG
Publication Date:
2020
detail.hit.zdb_id:
2661516-2
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