Nanosecond and femtosecond laser ablation of brass: Particulate and ICPMS measurements

Journal Article · Sat Nov 01 04:00:00 EST 2003

OSTI ID:842968

Liu, C ^[1]; Mao, X L; Mao, S; Zeng, X; Greif, R; Russo, R E

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1. LBNL Library

Femtosecond and nanosecond lasers were compared for ablating brass alloys. All operating parameters from both lasers were equal except for the pulse duration. The ablated aerosol vapor was collected on silicon substrates for particle size measurements or sent into an inductively coupled plasma mass spectrometer. The diameters and size distribution of particulates were measured from scanning electron microscope (SEM) images of the collected ablated aerosol. SEM measurements showed that particles ablated using nanosecond pulses were single spherical entities ranging in diameter from several micrometers to several hundred nanometers. Primary particles ablated using femtosecond ablation were {approx}100 nm in diameter but formed large agglomerates. ICPMS showed enhanced signal intensity and stability using femtosecond compared to nanosecond laser ablation.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director. Office of Science. Office of Basic Energy Sciences. Chemical Sciences Geosciences and Biosciences Division, Office of Nonproliferationand National Security NA22
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 842968
• Report Number(s): LBNL--54108
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ABLATION
AEROSOLS
ALLOYS
BRASS
DISTRIBUTION
ELECTRON MICROSCOPES
LASERS
MASS SPECTROMETERS
PARTICLE SIZE
PARTICULATES
PLASMA
SILICON
STABILITY
SUBSTRATES