Resonance enhanced multi-photon ionization of neutral atoms sputtered with Ga-FIB

Selective detection of polyaromatic hydrocarbons on diesel exhaust particles using sputtered neutral mass spectrometry

“…All experiments were performed using the apparatus developed by us . Because the apparatus design can be found in published papers, only certain important points will be described here.…”

Imaging of Polycyclic Aromatic Hydrocarbons by Means of Sputtered Neutrals Mass Spectrometry Using a Diode-pumped Solid-State Laser

“…Experimental Figure 1 schematically shows the layout of the apparatus for both laser-SNMS and TOF-SIMS. 17,18 The main components are an ultrahigh vacuum chamber with two low-OH-content UV grade fused quartz windows (COSMOTEC Co., Ltd.), a sample manipulator (Toyama Co., Ltd.), a liquid-metal Ga ion source (Ga-FIB) for spectroscopy and imaging (A&D Co., Ltd.), a TOF mass analyzer (Toyama Co., Ltd.) for analyzing photo-ionized species, a precision timing generator (DG535, Stanford Research Systems, USA) for synchronizing a laser with Ga-FIB, a TOF-MS, and a UV microchip laser. 18 The UV microchip laser has characteristics of a short warm-up time, being nearly maintenance free, a small laser head size (~10 × 30 × 5 cm), a small power supply (~30 × 25 × 15 cm), a high repetition rate (over 1 kHz), high power (maximum energy 80 μJ/pulse) for a wavelength of 266 nm.…”