The role of molecular state and orientation in harpooning reactions:: N2O on Cs/Pt(111)

被引：30

作者：

Brandt, M

Greber, T

Bowering, N

Heinzmann, U

机构：

[1] Univ Bielefeld, Fak Phys, D-33501 Bielefeld, Germany

[2] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.81.2376

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The interaction of a beam of state selected and oriented N2O molecules with 1 ML of Cs on Pt(lll) is studied by means of exoelectron emission. While the immediate emission is absent for the impact of ground-state molecules it is present when the molecules are in the first excited n(2) = 1 vibrational bending mode. The observed orientational anisotropy agrees with a theory that includes the molecular orientation. The results can be explained in a picture where N2O approaches the surface with the O end and where-after harpooning-an exoelectron is emitted.

引用

收藏

页码：2376 / 2379

页数：4

相关论文

共 27 条

[1] EXPERIMENTAL AND THEORETICAL APPROACHES TO THE IONIZATION PROCESS IN SECONDARY-ION EMISSION [J].

BLAISE, G ;

NOURTIER, A .

SURFACE SCIENCE, 1979, 90 (02) :495-547

[2] EXOELECTRON EMISSION AT CS SURFACES BY ACCELERATED O(2) MOLECULES [J].

BOTTCHER, A ;

MORGANTE, A ;

GIESSEL, T ;

GREBER, T ;

ERTL, G .

CHEMICAL PHYSICS LETTERS, 1994, 231 (01) :119-122

[3] STICKING AND SCATTERING OF GAS-PHASE ORIENTED NO AT PT(100) AS A FUNCTION OF THE TRANSLATIONAL ENERGY AND OF MOLECULAR-ORIENTATION [J].

BRANDT, M ;

MULLER, H ;

ZAGATTA, G ;

WEHMEYER, O ;

BOWERING, N ;

HEINZMANN, U .

SURFACE SCIENCE, 1995, 331 :30-34

[4] SURFACE MIGRATION OF HOT ADATOMS IN THE COURSE OF DISSOCIATIVE CHEMISORPTION OF OXYGEN ON AL(111) [J].

BRUNE, H ;

WINTTERLIN, J ;

BEHM, RJ ;

ERTL, G .

PHYSICAL REVIEW LETTERS, 1992, 68 (05) :624-626

[5] TEMPERATURE DEPENDENCE OF DISSOCIATIVE ATTACHMENT IN N2O [J].

CHANTRY, PJ .

JOURNAL OF CHEMICAL PHYSICS, 1969, 51 (08) :3369-&

[6] THEORY OF ORIENTED SYMMETRICAL-TOP MOLECULE BEAMS - PRECESSION, DEGREE OF ORIENTATION, AND PHOTOFRAGMENTATION OF ROTATIONALLY STATE-SELECTED MOLECULES [J].

CHOI, SE ;

BERNSTEIN, RB .

JOURNAL OF CHEMICAL PHYSICS, 1986, 85 (01) :150-161

[7] ORIENTATION DEPENDENCE OF THE STICKING PROBABILITY OF NO AT NI(100) [J].

FECHER, GH ;

VOLKMER, M ;

PAWLITZKY, B ;

BOWERING, N ;

HEINZMANN, U .

VACUUM, 1990, 41 (1-3) :265-268

[8]

Gadzuk J. W., 1985, Comments on Atomic and Molecular Physics, V16, P219

[9] EXO-ELECTRON EMISSION DURING OXYGEN AND WATER CHEMISORPTION ON FRESH MAGNESIUM SURFACES [J].

GESELL, TF ;

ARAKAWA, ET ;

CALLCOTT, TA .

SURFACE SCIENCE, 1970, 20 (01) :174-&

[10]

Greber T., 1997, Surface Science Reports, V28, P1, DOI 10.1016/S0167-5729(97)00005-8