Počet záznamů: 1
Laser Power Density Dependence on Charge State Distribution of Ta Ion Laser Plasma
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SYSNO ASEP 0524538 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Laser Power Density Dependence on Charge State Distribution of Ta Ion Laser Plasma Tvůrce(i) Okamura, M. (JP)
Tamis, A. (US)
Whelan, T. (US)
Kanesue, T. (US)
Ikeda, S. (US)
Cannavó, Antonino (UJF-V) ORCID, SAICelkový počet autorů 6 Číslo článku 013325 Zdroj.dok. Review of Scientific Instruments. - : AIP Publishing - ISSN 0034-6748
Roč. 91, č. 1 (2020)Poč.str. 4 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova laser ablation ; laser produced plasma ; accelerator applications Vědní obor RIV BG - Jaderná, atomová a mol. fyzika, urychlovače Obor OECD Nuclear physics Způsob publikování Open access Institucionální podpora UJF-V - RVO:61389005 UT WOS 000602546800001 EID SCOPUS 85078527319 DOI 10.1063/1.5129530 Anotace Laser power density per pulse, which is commonly expressed with the unit of 'W/cm2,' is an important parameter to characterize ablation plasma. To match a design charge state of heavy ion beam induced by a laser ion source, a laser power density must be carefully chosen. Above around 108 W/cm2 of laser power density, laser ablation plasma is emitted from the surface of solid material. Then, up to 109 W/cm2, the most abundant charge state is 1+. Because the ionization energy increases with higher charge states, increasing the laser intensity leads to the charge state distribution shifting higher. Increasing the density to increase charge states also results in lower time of flight due to higher velocities. The maximum laser power density is obtained by the smallest available laser spot size on the target material which is determined by the quality of the laser beam. For many accelerator applications, higher charge state beams are preferred. In particular cases, singly charge ion beams are demanded. Therefore, production of intermediate charge state beams has not been investigated well. In this study, we selected Ta4+ as an example demanded beam and tried to clarify how the transition of charge state distribution depends on laser power density. Conclusively, the possible specification of a laser ion source for Ta4+ delivery was elucidated. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2021 Elektronická adresa https://doi.org/10.1063/1.5129530
Počet záznamů: 1