Matrix Effects on the Electronic Partitioning of Iron Atoms Desorbed from Surfaces by Energetic Ion Bombardment

Fred M. Kimock, David L. Pappas, Nicholas Winograd

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The effect of the sample matrix on the electronic partitioning of sputtered Fe atoms Is examined. The surfaces studied are clean and air-exposed polycrystalline Fe, Nl3Fe (111) and NBS 1264a steel. In contrast to the yield of secondary Fe+ (which for all samples is Increased dramatically by surface contamination), the fraction of ejected ground state Fe atoms is relatively Insensitive to surface contamination. When the clean targets are subjected to 900-eV argon ion bombardment, the populations of ejected metastable excited state Fe atoms are characterized by near-Boltzmann distributions with effective temperatures of about 700 ± 100 K. The populations of Fe atoms sputtered from the air-exposed surfaces are also near-Boltzmann in character, with effective temperatures up to 1400 ± 200 K.

Original languageEnglish (US)
Pages (from-to)2669-2674
Number of pages6
JournalAnalytical Chemistry
Volume57
Issue number13
DOIs
StatePublished - Jan 1 1985

Fingerprint

Ion bombardment
Iron
Atoms
Contamination
Argon
Steel
Air
Excited states
Ground state
Temperature

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

Cite this

@article{67bf8d9e3f3e4948a3f6704f44986dcb,
title = "Matrix Effects on the Electronic Partitioning of Iron Atoms Desorbed from Surfaces by Energetic Ion Bombardment",
abstract = "The effect of the sample matrix on the electronic partitioning of sputtered Fe atoms Is examined. The surfaces studied are clean and air-exposed polycrystalline Fe, Nl3Fe (111) and NBS 1264a steel. In contrast to the yield of secondary Fe+ (which for all samples is Increased dramatically by surface contamination), the fraction of ejected ground state Fe atoms is relatively Insensitive to surface contamination. When the clean targets are subjected to 900-eV argon ion bombardment, the populations of ejected metastable excited state Fe atoms are characterized by near-Boltzmann distributions with effective temperatures of about 700 ± 100 K. The populations of Fe atoms sputtered from the air-exposed surfaces are also near-Boltzmann in character, with effective temperatures up to 1400 ± 200 K.",
author = "Kimock, {Fred M.} and Pappas, {David L.} and Nicholas Winograd",
year = "1985",
month = "1",
day = "1",
doi = "10.1021/ac00290a053",
language = "English (US)",
volume = "57",
pages = "2669--2674",
journal = "Analytical Chemistry",
issn = "0003-2700",
publisher = "American Chemical Society",
number = "13",

}

Matrix Effects on the Electronic Partitioning of Iron Atoms Desorbed from Surfaces by Energetic Ion Bombardment. / Kimock, Fred M.; Pappas, David L.; Winograd, Nicholas.

In: Analytical Chemistry, Vol. 57, No. 13, 01.01.1985, p. 2669-2674.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Matrix Effects on the Electronic Partitioning of Iron Atoms Desorbed from Surfaces by Energetic Ion Bombardment

AU - Kimock, Fred M.

AU - Pappas, David L.

AU - Winograd, Nicholas

PY - 1985/1/1

Y1 - 1985/1/1

N2 - The effect of the sample matrix on the electronic partitioning of sputtered Fe atoms Is examined. The surfaces studied are clean and air-exposed polycrystalline Fe, Nl3Fe (111) and NBS 1264a steel. In contrast to the yield of secondary Fe+ (which for all samples is Increased dramatically by surface contamination), the fraction of ejected ground state Fe atoms is relatively Insensitive to surface contamination. When the clean targets are subjected to 900-eV argon ion bombardment, the populations of ejected metastable excited state Fe atoms are characterized by near-Boltzmann distributions with effective temperatures of about 700 ± 100 K. The populations of Fe atoms sputtered from the air-exposed surfaces are also near-Boltzmann in character, with effective temperatures up to 1400 ± 200 K.

AB - The effect of the sample matrix on the electronic partitioning of sputtered Fe atoms Is examined. The surfaces studied are clean and air-exposed polycrystalline Fe, Nl3Fe (111) and NBS 1264a steel. In contrast to the yield of secondary Fe+ (which for all samples is Increased dramatically by surface contamination), the fraction of ejected ground state Fe atoms is relatively Insensitive to surface contamination. When the clean targets are subjected to 900-eV argon ion bombardment, the populations of ejected metastable excited state Fe atoms are characterized by near-Boltzmann distributions with effective temperatures of about 700 ± 100 K. The populations of Fe atoms sputtered from the air-exposed surfaces are also near-Boltzmann in character, with effective temperatures up to 1400 ± 200 K.

UR - http://www.scopus.com/inward/record.url?scp=33845378822&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33845378822&partnerID=8YFLogxK

U2 - 10.1021/ac00290a053

DO - 10.1021/ac00290a053

M3 - Article

VL - 57

SP - 2669

EP - 2674

JO - Analytical Chemistry

JF - Analytical Chemistry

SN - 0003-2700

IS - 13

ER -