Thermionic emission and fragmentation of C-60

被引：122

作者：

Hansen, K ^{[1
]}

Echt, O ^{[1
]}

机构：

[1] UNIV NEW HAMPSHIRE,DEPT PHYS,DURHAM,NH 03824

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.78.2337

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We analyze the rate of delayed (thermionic) ionization of photoexcited C-60 molecules. The rate has a power-law dependence, indicating the presence of a continuum of rate constants. The value of the exponent provides information about the competition between delayed ionization and unimolecular fragmentation; it is equal to the ratio of the ionization energy and the activation energy for fragmentation. This result provides a novel method to measure the controversial bond dissociation energy of neutral C-60. We obtain a value of 11.9 +/- 1.9 eV.

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页码：2337 / 2340

页数：4

相关论文

共 37 条

[1] DELAYED IONIZATION OF C60 AND C70 [J].

CAMPBELL, EEB ;

ULMER, G ;

HERTEL, IV .

PHYSICAL REVIEW LETTERS, 1991, 67 (15) :1986-1988

[2] THERMIONIC EMISSION FROM THE FULLERENES [J].

CAMPBELL, EEB ;

ULMER, G ;

HERTEL, IV .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1992, 24 (01) :81-85

[3] ON THE VIBRATIONAL TEMPERATURE OF METAL CLUSTER BEAMS - A TIME-RESOLVED THERMIONIC EMISSION STUDY [J].

COLLINGS, BA ;

AMREIN, AH ;

RAYNER, DM ;

HACKETT, PA .

JOURNAL OF CHEMICAL PHYSICS, 1993, 99 (05) :4174-4180

[4]

DENG R, IN PRESS Z PHYS D

[5] SINGLE-PHOTON IONIZATION OF C-60-FULLERENE AND C-70-FULLERENE WITH SYNCHROTRON RADIATION - DETERMINATION OF THE IONIZATION-POTENTIAL OF C-60 [J].

DEVRIES, J ;

STEGER, H ;

KAMKE, B ;

MENZEL, C ;

WEISSER, B ;

KAMKE, W ;

HERTEL, IV .

CHEMICAL PHYSICS LETTERS, 1992, 188 (3-4) :159-162

[6] MULTIPHOTON IONIZATION OF C60 [J].

DING, D ;

COMPTON, RN ;

HAUFLER, RE ;

KLOTS, CE .

JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (11) :2500-2504

[7] CW LASER IONIZATION OF C-60 AND C-70 [J].

DING, D ;

HUANG, J ;

COMPTON, RN ;

KLOTS, CE ;

HAUFLER, RE .

PHYSICAL REVIEW LETTERS, 1994, 73 (08) :1084-1087

[8] ON THE UNIMOLECULAR FRAGMENTATION OF C-60(+) FULLERENE IONS - THE COMPARISON OF MEASURED AND CALCULATED BREAKDOWN PATTERNS [J].

FOLTIN, M ;

LEZIUS, M ;

SCHEIER, P ;

MARK, TD .

JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (12) :9624-9634

[9]

GSPANN J, 1982, PHYSICS ELECTRONIC A, P79

[10] Radiative cooling of fullerenes [J].

Hansen, K ;

Campbell, EEB .

JOURNAL OF CHEMICAL PHYSICS, 1996, 104 (13) :5012-5018

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