Postionization of molecules desorbed from surfaces by keV ion bombardment with femtosecond laser pulses

Kenneth F. Willey, Vasil Vorsa, Robert M. Braun, Nicholas Winograd

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

We report the use of femtosecond laser photoionization of sputtered neutral molecules to enhance the sensitivity of detection and to improve the prospects for molecule-specific imaging experiments. Results are presented for patterned metal oxides, polycyclic aromatic hydrocarbons and several amino acids. In addition to increased signal levels, we find that fs photoionization generally yields simpler mass spectra than the corresponding SIMS spectra, although considerable fragmentation is observed in both cases.

Original languageEnglish (US)
Pages (from-to)1253-1260
Number of pages8
JournalRapid Communications in Mass Spectrometry
Volume12
Issue number18
DOIs
StatePublished - Sep 24 1998

Fingerprint

Photoionization
Ion bombardment
Ultrashort pulses
Molecules
Polycyclic Aromatic Hydrocarbons
Secondary ion mass spectrometry
Oxides
Metals
Imaging techniques
Amino Acids
Experiments

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry

Cite this

@article{6023321e60ae4c4f8b8cdfdee150494f,
title = "Postionization of molecules desorbed from surfaces by keV ion bombardment with femtosecond laser pulses",
abstract = "We report the use of femtosecond laser photoionization of sputtered neutral molecules to enhance the sensitivity of detection and to improve the prospects for molecule-specific imaging experiments. Results are presented for patterned metal oxides, polycyclic aromatic hydrocarbons and several amino acids. In addition to increased signal levels, we find that fs photoionization generally yields simpler mass spectra than the corresponding SIMS spectra, although considerable fragmentation is observed in both cases.",
author = "Willey, {Kenneth F.} and Vasil Vorsa and Braun, {Robert M.} and Nicholas Winograd",
year = "1998",
month = "9",
day = "24",
doi = "10.1002/(SICI)1097-0231(19980930)12:18<1253::AID-RCM317>3.0.CO;2-H",
language = "English (US)",
volume = "12",
pages = "1253--1260",
journal = "Rapid Communications in Mass Spectrometry",
issn = "0951-4198",
publisher = "John Wiley and Sons Ltd",
number = "18",

}

Postionization of molecules desorbed from surfaces by keV ion bombardment with femtosecond laser pulses. / Willey, Kenneth F.; Vorsa, Vasil; Braun, Robert M.; Winograd, Nicholas.

In: Rapid Communications in Mass Spectrometry, Vol. 12, No. 18, 24.09.1998, p. 1253-1260.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Postionization of molecules desorbed from surfaces by keV ion bombardment with femtosecond laser pulses

AU - Willey, Kenneth F.

AU - Vorsa, Vasil

AU - Braun, Robert M.

AU - Winograd, Nicholas

PY - 1998/9/24

Y1 - 1998/9/24

N2 - We report the use of femtosecond laser photoionization of sputtered neutral molecules to enhance the sensitivity of detection and to improve the prospects for molecule-specific imaging experiments. Results are presented for patterned metal oxides, polycyclic aromatic hydrocarbons and several amino acids. In addition to increased signal levels, we find that fs photoionization generally yields simpler mass spectra than the corresponding SIMS spectra, although considerable fragmentation is observed in both cases.

AB - We report the use of femtosecond laser photoionization of sputtered neutral molecules to enhance the sensitivity of detection and to improve the prospects for molecule-specific imaging experiments. Results are presented for patterned metal oxides, polycyclic aromatic hydrocarbons and several amino acids. In addition to increased signal levels, we find that fs photoionization generally yields simpler mass spectra than the corresponding SIMS spectra, although considerable fragmentation is observed in both cases.

UR - http://www.scopus.com/inward/record.url?scp=0031709629&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031709629&partnerID=8YFLogxK

U2 - 10.1002/(SICI)1097-0231(19980930)12:18<1253::AID-RCM317>3.0.CO;2-H

DO - 10.1002/(SICI)1097-0231(19980930)12:18<1253::AID-RCM317>3.0.CO;2-H

M3 - Article

C2 - 9772768

AN - SCOPUS:0031709629

VL - 12

SP - 1253

EP - 1260

JO - Rapid Communications in Mass Spectrometry

JF - Rapid Communications in Mass Spectrometry

SN - 0951-4198

IS - 18

ER -