KINETIC-ENERGY RELEASE DURING EVAPORATION FROM LARGE SODIUM CLUSTERS

被引：18

作者：

HANSEN, K ^{[1
]}

FALK, J ^{[1
]}

机构：

[1] NIELS BOHR INST,DK-4000 ROSKILDE,DENMARK

来源：

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1995年 / 34卷 / 04期

关键词：

D O I：

10.1007/BF01437570

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

We have measured the distribution of momenta of atoms evaporating from large sodium clusters produced in a supersonic expansion source. The distributions are well described by phase space theory when polarization effects are included in the atomic capture cross section. Alternatively, the data can be fitted by a simple powerlaw preexponential. The cluster temperature extracted from both models differ, but still agree reasonable well with evaporative ensemble predictions. The data rule out a non-trivial transition state.

引用

页码：251 / 256

页数：6

共 21 条

[1] [Anonymous], 1982, PHYS ELECT ATOMIC CO
[2] MEAN-FIELD QUANTIZATION OF SEVERAL HUNDRED ELECTRONS IN SODIUM METAL-CLUSTERS
BJORNHOLM, S
BORGGREEN, J
ECHT, O
HANSEN, K
PEDERSEN, J
RASMUSSEN, HD
[J]. PHYSICAL REVIEW LETTERS, 1990, 65 (13) : 1627 - 1630
[3] THE PHYSICS OF SIMPLE METAL-CLUSTERS - EXPERIMENTAL ASPECTS AND SIMPLE-MODELS
DEHEER, WA
[J]. REVIEWS OF MODERN PHYSICS, 1993, 65 (03) : 611 - 676
[4] EKARDT W, 1984, PHYS REV B, V29, P1558, DOI 10.1103/PhysRevB.29.1558
[5] GSPANN J, 1986, METAL CLUSTERS, P43
[6] Haberland H., 1994, CLUSTER ATOMS MOL
[7] HANSEN K, IN PRESS EVAPORATION
[8] HANSEN K, IN PRESS IONIZATION
[9] MASS DISTRIBUTIONS OF COPPER, SILVER AND GOLD CLUSTERS AND ELECTRONIC SHELL STRUCTURE
KATAKUSE, I
ICHIHARA, T
FUJITA, Y
MATSUO, T
SAKURAI, T
MATSUDA, H
[J]. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, 1985, 67 (02): : 229 - 236
[10] Kittel C., 1986, INTRO SOLID STATE PH, Vsixth

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