用Raman散射和XPS技术分析了能量为几百keV到几百MeV的多种离子在C60薄膜中引起的辐照效应. 分析结果表明,在低能重离子辐照的C60薄膜中,其晶态向非晶态的转变过程是由核碰撞主导的. 在快离子(120 keV的H离子和171.2 MeV的S离子)辐照的情况下,电子能损起主导作用. 发现在H离子辐照过程中,电子能损有明显的退火效应,致使C60由晶态向非晶态转变的过程中,经历了一个石墨化的中间过程;而在S离子辐照的情况下,电子能损的破坏作用超过了退火效应,因此,在C60由晶态向非晶态转变的过程中,无石墨化的中间过程.
参考文献
| [1] | Klaumunzer S, Schumacher G. Dramatic Growth of Glas sy Pd80Si20 during Heavy Ion Irradiation [J]. Phys Rev Lett, 1983 , 51: 1 987-1 990. |
| [2] | Dammak H, Dunlop A, Lesueur D et al. P hase Transformation Induced by Swift Heavy Ion Irradiation of Pure Metal [J]. Nucl Instr & Meth, 1996, B107: 204-211. |
| [3] | Kratschmer W, Lamb L D, Fostiropoulos K et al. Solid C 60: A new form of carbon [J]. Nature, 1990, 347: 354-358. |
| [4] | Fink D, Klett R, Szimkoviak P et al. Ion Beam Radiati on Damage of Thin Fullerene Film [J]. Nucl Instr & Meth, 1996, B108: 114-1 24. |
| [5] | 金运范, 杨茹, 姚江宏等. 快离子在C60 薄膜中电子能损效应 [J]. 科学通报, 1999, 44(20): 2 150-2 153. |
| [6] | Jin Yunfan, Yang Ru, Yao Jianghong et al. Investigation of the Strong Electronic Excitation Effect in Fullerite Films Induced by Swift Ions [J]. Nucl Instr & Meth, 2000, 164-165: 391-395. |
| [7] | 金运范, 杨茹, 姚江宏等. 低能离子在C60 薄膜中引起的辐照效应 [J]. 高能物理与核物理, 2000, 24(1): 82-86. |
| [8] | Kastner J, Kuzmany H, Palmetshofer L. Damage and Polym erization by Ion Bombardment of C60 [J]. Appl Phys Lett, 19 94, 65(5): 543-545. |
| [9] | Zawislak F C, Baptista D L, Behar M et al. Damage of Ion Irradiated C60 Films [J]. Nucl Instr & Meth , 1999, B149: 336- 343. |
| [10] | Sauvajol J L, Brocard F, Hricha Z et al. Raman Spectroscopy of C60 Solid Films [J]. Phys Rev, 1995, B5 2: 14 839-14 8 49. |
| [11] | Dillon R O, Woollam J A, Katkanant V. Use of Rama n Scattering to Investigate Disorder and Crystallite Formation in as-Deposited and Annealed Carbon Films [J]. Phys Rev, 1984, B29: 3 482-3 489. |
| [12] | Toulemonde M, Dufour C, Paumier E et al. Transient Thermal Process after a Hig h Energy Heavy Ion Irradiation of Amorphous Metals and Semiconductors [J]. Phy s Rev, 1992, 46: 14 362-14 369. |
| [13] | Ramsteiner M, Wagner J. Resonant Raman Scattering of Hydrogenated Amorphous Carbon: Evidence for π-bonded carbon clusters [J]. Appl Phys Lett, 1987, 5 1: 1 355-1 357. |
| [14] | 姚江宏, 邹云娟, 杨茹等. 离子注入对C60 结构的影响[J]. 物理学报, 1999, 48(7): 1 269-1 274. |
| [15] | Menon M, Subbaswang K R, Sawtarie M. Structure and Properties of C60 Dimers by Generalized Tight-binding Molecular Dynamics [J]. Phys Rev, 1994, B49: 13 9 66-13 969. |
| [16] | Rao A M, Zhou P, Wang K W et al. Photoinduced P olymerization of Solid C60 Films [J]. Science, 1993, 259: 955-957. |
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