PRODUCTION OF SMALL DOUBLY CHARGED NEGATIVE CARBON CLUSTER IONS BY SPUTTERING

被引：182

作者：

SCHAUER, SN ^{[1
]}

WILLIAMS, P ^{[1
]}

COMPTON, RN ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,CHEM PHYS SECT,OAK RIDGE,TN 37830

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.65.625

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Carbon cluster ions with a double negative charge, and lifetimes of at least 10s, have been produced by sputtering graphite, and observed in a double-focusing mass spectrometer. Ions as small as C72- have been detected. The intensities of the doubly charged clusters (Cn2- where n=728) follow an alternating pattern, with even-n clusters being more intense than neighboring odd-n clusters. In contrast, even-n singly charged clusters are more intense than odd n for n9, and less intense for n13, where the clusters are believed to be cyclic. © 1990 The American Physical Society.

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页码：625 / 628

页数：4

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