Light emission in the agglomeration of silver clusters

被引：19

作者：

Ievlev, D ^{[1
]}

Rabin, I ^{[1
]}

Schulze, W ^{[1
]}

Ertl, G ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 328卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(00)00858-7

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：

Small noble-gas droplets are generated by adiabatic expansion and travel over a heated crucible where evaporated Ag atoms are picked up. The subsequent agglomeration of these Ag atoms to clusters is associated with light emission. This effect is caused by the gain in binding energy by the clustering process leading to the ejection, preferably, of excited trimers. The heat released by condensation and coagulation of the Ag atoms on the droplets causes continuous evaporation of the noble-gas atoms, so that under suitable conditions even light emission from the decay of free Ag(3)(*) species could be observed and analyzed. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：142 / 146

页数：5

共 11 条

[1] Cold metal clusters: Helium droplets as a nanoscale cryostat [J].

Bartelt, A ;

Close, JD ;

Federmann, F ;

Quaas, N ;

Toennies, JP .

PHYSICAL REVIEW LETTERS, 1996, 77 (17) :3525-3528

[2] Surface vibrations of argon clusters by helium atom scattering [J].

Buck, U ;

Krohne, R ;

Lohbrandt, P .

JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (08) :3205-3215

[3] FORMATION OF METAL-CLUSTERS AND MOLECULES BY MEANS OF THE GAS AGGREGATION TECHNIQUE AND CHARACTERIZATION OF SIZE DISTRIBUTION [J].

FRANK, F ;

SCHULZE, W ;

TESCHE, B ;

URBAN, J ;

WINTER, B .

SURFACE SCIENCE, 1985, 156 (JUN) :90-99

[4] NUCLEATION AND GROWTH OF CLUSTERS IN EXPANDING NOZZLE FLOWS [J].

HAGENA, OF .

SURFACE SCIENCE, 1981, 106 (1-3) :101-116

[5] CONDENSATION IN FREE JETS - COMPARISON OF RARE-GASES AND METALS [J].

HAGENA, OF .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1987, 4 (03) :291-299

[6]

Knickelbein MB, 1999, PHILOS MAG B, V79, P1379

[7] Chemiluminescence in the agglomeration of metal clusters [J].

Konig, L ;

Rabin, I ;

Schulze, W ;

Ertl, G .

SCIENCE, 1996, 274 (5291) :1353-1355

[8] Optical emission spectra of Ag-3 molecules in the gas evaporation technique [J].

Okazaki, T ;

Saito, Y ;

Kasuya, A ;

Nishina, Y .

JOURNAL OF CHEMICAL PHYSICS, 1996, 104 (03) :812-814

[9] Ultrafast hot-electron dynamics observed in Pt3- using time-resolved photoelectron spectroscopy [J].

Pontius, N ;

Bechthold, PS ;

Neeb, M ;

Eberhardt, W .

PHYSICAL REVIEW LETTERS, 2000, 84 (06) :1132-1135

[10] Light emission during the agglomeration of silver clusters in noble gas matrices [J].

Rabin, I ;

Schulze, W ;

Ertl, G .

JOURNAL OF CHEMICAL PHYSICS, 1998, 108 (12) :5137-5142

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