Browse > Article
http://dx.doi.org/10.5012/bkcs.2002.23.2.309

Mass Spectrometric Study of Carbon Cluster Formation in Laser Ablation of Graphite at 355 nm  

Koo, Young-Mi (Department of Chemistry, Wonkwang University)
Choi, Young-Ku (Department of Chemistry, Wonkwang University)
Lee, Kee-Hag (Department of Chemistry, Wonkwang University)
Jung, Kwang-Woo (Department of Chemistry, Wonkwang University)
Publication Information
Abstract
The ablation dynamics and cluster formation of $C_n^+$ ions ejected from 355 nm laser ablation of a graphite target in vacuum are investigated using a reflectron time-of-flight (RTOF) mass spectrometer. At low laser fluence, odd-numbered cluster ions with $3{\leq}n{\leq}15$ are predominantly produced. Increasing the laser fluence shifts the maximum size distribution towards small cluster ions, implying the fragmentation of larger clusters within the hot plume. The temporal evolution of $C_n^+$ ions was measured by varying the delay time of the ion extraction pulse with respect to the laser irradiation, providing significant information on the characteristics of the ablated plume. Above a laser fluence of $0.2J/cm^2$ , large cluster ions ($n{\geq}30$) are produced at relatively long delay times, indicating that atoms or small carbon clusters aggregate during plume propagation. The dependence of the intensity of ablated $C_n^+$ ions on delay time after laser irradiation shows that the most probable velocity of each cluster ion decreases with cluster size.
Keywords
Graphite; Clusters; Laser ablation; Time-of-flight mass spectrometry;
Citations & Related Records

Times Cited By Web Of Science : 7  (Related Records In Web of Science)
Times Cited By SCOPUS : 7
연도 인용수 순위
1 Im, H.-S.; Kim, S.-H.; Choi, Y.-K.; Lee, K. H.; Jung, K.-W. Bull. Korean Chem. Soc. 1997, 18, 56
2 Choi, Y.-K.; Im, H.-S.; Jung, K.-W. Bull. Korean Chem. Soc. 1998, 19, 830
3 Rohlfing, E. A.; Cox, D. M.; Kaldor, A. J. Chem. Phys. 1984, 81, 3322
4 Sing, R.; Narayan, J. Phys. Rev. B 1990, 41, 8843   DOI   ScienceOn
5 Kroto, H. W.; Heath, R. J.; Brien, S. C.; Curl, R. F.; Smalley, R. E. Nature 1985, 318, 162   DOI
6 Iijima, S.; Ichihashi, T. Nature 1993, 363, 603   DOI   ScienceOn
7 Lowndes, D. H.; Geohegan, D. B.; Puretzky, A. A.; Norton, D. P.; Rouleau, C. M. Science 1996, 273, 898   DOI   ScienceOn
8 Smalley, R. E. Acc. Chem. Res. 1992, 25, 98   DOI
9 Bloomfield, L. A.; Geusic, M. E.; Freeman, R. R.; Brown, W. L. Chem. Phys. Lett. 1985, 121, 33   DOI   ScienceOn
10 Zheng, J. P.; Huang, Z. Q.; Shaw, D. T.; Kwok, H. S. Appl. Phys. Lett. 1989, 54, 280   DOI
11 Sankur, H.; Denatale, J.; Guming, W.; Nelson, J. G. J. Vac. Sci. Technol. A 1987, 235, 2869
12 Cox, D. M.; Reichmann, K. C.; Kaldor, A. J. Chem. Phys. 1988, 88, 1588   DOI
13 Choi, Y.-K.; Im, H.-S.; Jung, K.-W. Int. J. Mass Spectrom. 1999, 189, 115   DOI   ScienceOn
14 Kaizu, K.; Kohno, M.; Suzuki, S.; Shiromaru, H.; Moriwaki, T.; Achiba, Y. J. Chem. Phys. 1997, 106, 9954   DOI   ScienceOn
15 Moriwaki, T.; Kobayashi, K.; Osaka, M.; Ohara, M.; Shiromaru, H.; Achiba, Y. J. Chem. Phys. 1997, 107, 8927   DOI   ScienceOn
16 Gaumet, J. J.; Wakisaka, A.; Shimizu, Y.; Tamori, Y. J. Chem. Soc. Faraday Trans. 1993, 89, 1667   DOI   ScienceOn
17 Ramanathan, R.; Zimmerman, J. A.; Eyler, J. R. J. Chem. Phys. 1993, 98, 7838   DOI   ScienceOn
18 Bach, S. B.; Eyler, J. R. J. Chem. Phys. 1989, 92, 358   DOI
19 Sowa-Resat, M. B.; Hintz, P. A.; Anderson, S. L. J. Phys. Chem. 1995, 99, 10736   DOI   ScienceOn
20 Kokai, F.; Koka, Y. Nucl. Instrum. & Methods B 1997, 121, 387   DOI   ScienceOn
21 Raghavachari, K.; Binkley, J. S. J. Chem. Phys. 1987, 87, 2191   DOI
22 Kohno, M.; Suzuki, S.; Shiromaru, H.; Moriwaki, T.; Achibe, Y. Chem. Phys. Lett. 1998, 282, 330   DOI   ScienceOn
23 Choi, Y.-K.; Im, H.-S.; Jung, K.-W. Bull. Korean Chem. Soc. 1999, 20, 1501
24 Lade, R. J.; Ashfold, M. N. R. Surf. Coat. Technol. 1999, 120-121, 313   DOI   ScienceOn
25 Puretzky, A. A.; Geohegan, D. B.; Jellison, G. E. Jr.; McGibbon, M. M. Appl. Surf. Sci. 1996, 96, 859   DOI   ScienceOn