ELEMENTARY STEPS OF THE INTERACTION OF C-H FILM SURFACES WITH THERMAL H/D ATOMS

被引：14

作者：

BIENER, J ^{[1
]}

SCHENK, A ^{[1
]}

WINTER, B ^{[1
]}

LUTTERLOH, C ^{[1
]}

HORN, A ^{[1
]}

KUPPERS, J ^{[1
]}

机构：

[1] UNIV BAYREUTH,D-95440 BAYREUTH,GERMANY

来源：

VACUUM | 1995年 / 46卷 / 8-10期

关键词：

D O I：

10.1016/0042-207X(95)00068-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The interaction of thermal H and D atoms with thin ion-beam deposited C : H films were studied with vibrational (HREELS) and Auger electron spectroscopy. At surfaces which exhibit aromatic sp(2) CH groups a hydrogenation reaction towards sp(3) is observed with a cross-section of 4.5 Angstrom(2). At fully hydrogenated C : H surfaces with solely sp(3) CH groups present, H abstraction towards molecular HD occurs at D impact with an initial cross-section of 0.05 Angstrom(2). The magnitude of both cross-sections is in line with an Eley-Rideal mechanism. As a radical C atom is produced by the H abstraction reaction, a thermally activated de-excitation via a hydrocarbon radical split-off is initiated which causes chemical erosion of the C : H film at a yield of about 0.01 C per incoming H around 600 K.

引用

页码：903 / 906

页数：4

共 15 条

[1] LOW-PRESSURE, METASTABLE GROWTH OF DIAMOND AND DIAMONDLIKE PHASES [J].