ELECTRON-IMPACT IONIZATION OF FULLERENES - APPEARANCE ENERGIES OF C-70N+, N = 1, 2 AND 3

被引：3

作者：

BABA, MS ^{[1
]}

NARASIMHAN, TSL ^{[1
]}

BALASUBRAMANIAN, R ^{[1
]}

MATHEWS, CK ^{[1
]}

机构：

[1] INDIRA GANDHI CTR ATOM RES,DIV MAT CHEM,CHEM GRP,KALPAKKAM 603102,TAMIL NADU,INDIA

来源：

RAPID COMMUNICATIONS IN MASS SPECTROMETRY | 1993年 / 7卷 / 12期

关键词：

D O I：

10.1002/rcm.1290071217

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The ionization efficiency curves for the production of singly, doubly and triply charged ions from C70 by electron impact are reported, for the first time, up to an electron energy of 80 eV. Appearance energies were derived by linear extrapolation of ionization efficiency curves as 7.8 +/- 0.5 eV, 16.0 +/- 0.5 eV and 33.0 +/- 1.0 eV respectively for C70+, C-70(2+) and C-70(3+). The shape of the ionization efficiency curves suggests that there are several energies at which resonant absorption to excited states takes place. Relative abundances of the three ions at various electron energies are also presented. An estimate for the appearance energy of C-70(4+) is given.

引用

页码：1141 / 1144

页数：4

共 30 条

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