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Pulsed gas aggregation for improved nanocluster growth and flux
Author(s) -
Drache Steffen,
Stranak Vitezslav,
Berg Florian,
Hubicka Zdenek,
Tichy Milan,
Helm Christiane A.,
Hippler Rainer
Publication year - 2014
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201330399
Subject(s) - cluster (spacecraft) , cluster size , argon , nanoparticle , chemical physics , materials science , analytical chemistry (journal) , pulse (music) , flux (metallurgy) , atomic physics , molecular physics , chemistry , nanotechnology , molecular dynamics , physics , optics , chromatography , computational chemistry , detector , computer science , programming language , metallurgy
Growth of Cu nanoparticles in a pulsed gas aggregation cluster source was studied. The cluster growth is enhanced by an energy transport inside the aggregation chamber fed by argon that is delivered in short pulses repeated with low frequency. The effect of pressure, varied during the pulse, on the cluster growth was estimated from time‐resolved measurements of mass/size cluster distribution. The cluster mass and the cluster production well correlate with pressure changes. Several stages of cluster growth during the gas‐pulse were recognized. Not only larger clusters but also significantly enhanced particle and mass fluxes were observed.