Particle formation from pulsed laser irradiation of soot aggregates studied with a scanning mobility particle sizer, a transmission electron microscope, and a scanning transmission x-ray microscope
We investigated the physical and chemical changes induced in soot aggregates exposed to laser radiation using a scanning mobility particle sizer, a transmission electron microscope,and a scanning transmission x-ray microscope to perform near-edge x-ray absorption fine structure spectroscopy. Laser-induced nanoparticle production was observed at fluences above0.12 J/cm2 at532 nm and0.22 J/cm2 at1064 nm. Our results indicate that new particle formation proceeds via (1) vaporization of small carbon clusters by thermal or photolytic mechanisms, followed by homogeneous nucleation, (2) heterogeneous nucleation of vaporized carbon clusters onto material ablated from primary particles, or (3)both processes.
- OSTI ID:
- 20929659
- Journal Information:
- Applied Optics, Journal Name: Applied Optics Journal Issue: 6 Vol. 46; ISSN 0003-6935; ISSN APOPAI
- Country of Publication:
- United States
- Language:
- English
Similar Records
Particle Formation from Pulsed Laser Irradiation of SootAggregates studied with scanning mobility particle sizer, transmissionelectron microscope and near-edge x-ray absorption fine structure.
AOS: Scanning-Mobility Particle Sizer: nanoscale particles
ARM: AOS: Scanning-Mobility Particle Sizer
Journal Article
·
Mon Feb 19 23:00:00 EST 2007
· Applied Optics
·
OSTI ID:903362
AOS: Scanning-Mobility Particle Sizer: nanoscale particles
Dataset
·
Sun Jan 31 23:00:00 EST 2021
·
OSTI ID:1635016
ARM: AOS: Scanning-Mobility Particle Sizer
Dataset
·
Tue Jul 03 00:00:00 EDT 2012
·
OSTI ID:1095583