Photoionization and molecular fragmentation using nanosecond and femtosecond lasers

Journal Article · Sat Apr 01 04:00:00 EST 1995 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.47533· OSTI ID:76383

Brummel, C L; Willey, K F; Wood, M C; Zhou, Y; Vickerman, J C; Winograd, N ^[1]

---

1. Department of Chemistry, Penn State University, University Park, Pennsylvania 16802 (United States)

We have incorporated a Ti:sapphire laser coupled to a regenerative amplifier to our TOF-SIMS postionization system. The Ti:sapphire laser system operates at 1 kHz and produces pulses at 800 nm (1.1 mJ). 400 nm (470 {mu}J) and 266 nm (150 {mu}J). The kHz repetition rate reduces data acquisition times and the short pulse duration provides softer ionization than was possible with a YAG based 30 Hz ns laser system. We compare data from the ns and the fs system. We also compare molecular photoionization at 800, 400 and 266 nm. {copyright} 1995 {ital American} {ital Institute} {ital of} {ital Physics}

• Sponsoring Organization: USDOE
• OSTI ID: 76383
• Report Number(s): CONF-940706--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 329; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHEMICAL ANALYSIS
FRAGMENTATION
IMAGES
LASER RADIATION
PHOTOIONIZATION
PULSE TECHNIQUES
TRYPTOPHAN