Ultra short laser pulse induced charged particle emission from wide bandgap crystals

被引：33

作者：

Henyk, M ^{[1
]}

Wolfframm, D ^{[1
]}

Reif, J ^{[1
]}

机构：

[1] BTU Cottbus, LS Expt Phys Materialwissensch, D-03044 Cottbus, Germany

来源：

APPLIED SURFACE SCIENCE | 2000年 / 168卷 / 1-4期

关键词：

mass spectrometry; ultrashort laser pulses; laser ablation; Coulomb explosion;

D O I：

10.1016/S0169-4332(00)00619-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Femtosecond laser ablation from wide bandgap crystals (Al2O3, NaCl, BaF2) is studied at intensities between 10(11) and 10(13) W/cm(2), well below the single shot damage threshold. Negative ions an detected at considerable delay and appear to result from thermal desorption. Explosive emission of positive ions and clusters is preceded by strong electron emission. Ionisation occurs via defect enhanced multiphoton absorption. Our results favour the model of Coulomb explosion over that of Phase explosion as the origin of fast ion desorption. (C) 2000 Published by Elsevier Science B.V.

引用

页码：263 / 266

页数：4

共 6 条

[1] Laser-induced ion emission from dielectrics
Henyk, M
Mitzner, R
Wolfframm, D
Reif, J
[J]. APPLIED SURFACE SCIENCE, 2000, 154 : 249 - 255
[2] On the mechanisms of target modification by ion beams and laser pulses
Kelly, R
Miotello, A
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1997, 122 (03) : 374 - 400
[3] Sensitization and desensitization of the luminescence yield of Al2O3:C
Kristianpoller, N
Shmilevich, A
Weiss, D
Chen, R
[J]. RADIATION EFFECTS AND DEFECTS IN SOLIDS, 1998, 146 (1-4): : 237 - 241
[4] MULTIPHOTON-INDUCED DESORPTION OF POSITIVE-IONS FROM BARIUM FLUORIDE
MATTHIAS, E
NIELSEN, HB
REIF, J
ROSEN, A
WESTIN, E
[J]. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1987, 5 (05): : 1415 - 1422
[5] Miller J.C., 1994, Laser Ablation: principles and Applications
[6] MOLECULAR CLUSTER CALCULATIONS FOR THE ANALYSIS OF LASER-INDUCED EMISSION OF ELECTRONS AND IONS FROM THE (111) SURFACE OF BAF2
ROSEN, A
WESTIN, E
MATTHIAS, E
NIELSEN, HB
REIF, J
[J]. PHYSICA SCRIPTA, 1988, T23 : 184 - 190

← 1 →