Work

Enhancement of W Nanoparticles Synthesis by Injecting H2 in a Magnetron Sputtering Gas Aggregation Cluster Source Operated in Ar

Year: 2024

Type: article

Abstract: Synthesis of W nanoparticles by magnetron sputtering combined with gas aggregation operated in Ar suffers from a continuous decrease of the synthesis rate, ceasing in a finite time interval, in the range of minutes to tens of minutes. Experimentally, we noticed that the addition of small amounts of H2 to Ar (5–20%) increases the synthesis rate, which remains constant over time, at a value dependent on the amount of injected hydrogen. Mass spectrometry investigations revealed, in the hydrogen presence, a dominance of the ArH+ ions over the Ar+ ones, associated also with an increased number of W+ and WH+ species in plasma, sustaining a substantial increase in the nucleation rate.

Source: Plasma Chemistry and Plasma Processing

DOI: 10.1007/s11090-024-10499-z

Authors: Tomy Acsente, Silviu Daniel Stoica, Cristina Craciun, Bogdana Mitu, Gheorghe Dinescu

Institution: National Institute for Laser Plasma and Radiation Physics

Language: English

Topic: Vacuum and Plasma Arcs

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,790

Funders: EUROfusion, European Commission, Euratom Research and Training Programme