Electron stimulated desorption of anions and cations from condensed allyl glycidyl ether

被引：8

作者：

Yildirim, Y. ^{[1
]}

Balcan, M. ^{[1
]}

Bass, A. D. ^{[2
]}

Cloutier, P. ^{[2
]}

Sanche, L. ^{[2
,3
]}

机构：

[1] Ege Univ, Fac Sci, Dept Chem, TR-35100 Izmir, Turkey

[2] Univ Sherbrooke, Fac Med & Sci Sante, Dept Med Nucl & Radiobiol, Sherbrooke, PQ J1H 5N4, Canada

[3] Open Univ, Dept Phys & Astron, Milton Keynes MK7 6AA, Bucks, England

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2010年 / 12卷 / 28期

基金：

加拿大自然科学与工程研究理事会;

关键词：

SURFACE-REACTIONS; ATTACHMENT; IMPACT; FILMS; RESONANCES; CAPTURE; YIELDS;

D O I：

10.1039/b925347e

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：

We report measurements of the electron stimulated desorption (ESD) of anions and cations from thin films of allyl glycidyl ether (AGE), formed by condensation onto multilayer Kr and Pt substrates using a high sensitivity time of flight mass analyser. Measurements were performed as a function of film thickness, incident electron energy (E-i) and effective incident current. Below incident electron energies of 20 eV the desorption of anions is dominated by the process of dissociative electron attachment (DEA) via several transient negative ions at E-i between 5.5 and 16.5 eV. Comparisons between measurements for AGE and ethyl oxirane show that the ESD of anions is essentially that of the glycidyl (epoxide) ring, though DEA occurring at the ether, within the linear part of the AGE molecule is also observed. Cation yields are dominated by the desorption of small fragments formed via scission of the same ether bond.

引用

页码：7950 / 7958

页数：9

共 39 条

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