Laser Power Density Dependence on Charge State Distribution of Ta Ion Laser Plasma

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00524538" target="_blank" >RIV/61389005:_____/20:00524538 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1063/1.5129530" target="_blank" >https://doi.org/10.1063/1.5129530</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5129530" target="_blank" >10.1063/1.5129530</a>

Result language

angličtina

Original language name

Laser Power Density Dependence on Charge State Distribution of Ta Ion Laser Plasma

Original language description

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.

Czech name

—

Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

10304 - Nuclear physics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Review of Scientific Instruments

ISSN

0034-6748

e-ISSN

—

Volume of the periodical

91

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

4

Pages from-to

013325

UT code for WoS article

000602546800001

EID of the result in the Scopus database

2-s2.0-85078527319