Photoionization studies of chromium clusters:: Ionization energies of Cr4 to Cr25 -: art. no. 013202

被引：18

作者：

Knickelbein, MB ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW A | 2003年 / 67卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.67.013202

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The photoionization spectra of isolated chromium clusters from Cr-4 to Cr-25 have been recorded. The vertical ionization energies (E-i(v)) derived from the spectra decrease discontinuously with increasing cluster size. The E-i(v) values determined for Cr-n species were, in most cases, within 0.2 eV of those of the corresponding CrnO and CrnO2 species, recently reported by Wang [Appl. Phys. B 73, 417 (2001)], with the largest differences observed for several of the smaller clusters. The E-i(v) determined for Cr-4 was 0.7 ev larger than that found previously for Cr4O, suggesting that in this case the bare cluster and oxide have different structures.

引用

页数：6

共 46 条

[1] STRUCTURES, BINDING-ENERGIES, AND CHARGE-DISTRIBUTIONS FOR 2 TO 6 ATOM TI, CR, FE, AND NI CLUSTERS AND THEIR RELATIONSHIP TO NUCLEATION AND CLUSTER CATALYSIS [J].