Kinetic-energy-release distributions and barrier heights for C2a+ emission from multiply charged C60 and C70 fullerenes

被引：12

作者：

Haag, N. ^{[1
]}

Berenyi, Z. ^{[1
]}

Reinhed, P. ^{[1
]}

Fischer, D. ^{[1
]}

Gudmundsson, M. ^{[1
]}

Johansson, H. A. B. ^{[1
]}

Schmidt, H. T. ^{[1
]}

Cederquist, H. ^{[1
]}

Zettergren, H. ^{[2
]}

机构：

[1] Univ Stockholm, Dept Phys, AlbNova Univ Ctr, S-10691 Stockholm, Sweden

[2] Univ Aarhus, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

来源：

PHYSICAL REVIEW A | 2008年 / 78卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.78.043201

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present experimental kinetic-energy-release distributions in the asymmetric fission processes C60 q+ → C58 (q-1) + + C2+ and C70 q+ → C68 (q-1) + + C2+ for highly excited mother ions in charge states q=4-8. We find that the distributions for C70 q+ are considerably narrower and peak at lower energies than for C60 q+ in the corresponding charge state when q>4. Further, semiempirical values for C2+ fission barrier heights were extracted for q=4-6 by means of a statistical approach and the measured intensity ratios between fission and C2 evaporation. © 2008 The American Physical Society.

引用

页数：9

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