Optical emission investigation of laser-produced MgB2 plume expanding in an Ar buffer gas

被引：21

作者：

Amoruso, S

Bruzzese, R

Spinelli, N

Velotta, R

Wang, X

Ferdeghini, C

机构：

[1] INFM, I-80126 Naples, Italy

[2] Univ Naples Federico II, Dipartimento Sci Fisiche, I-80126 Naples, Italy

[3] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[4] INFM, I-16146 Genoa, Italy

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 23期

关键词：

D O I：

10.1063/1.1484549

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical emission spectroscopy is used to study the dynamics of the plasma generated by pulsed-laser irradiation of a MgB2 target, both in a vacuum and at different Ar buffer gas pressures. The analysis of the time-resolved emission of selected species shows that the Ar background gas strongly influences the plasma dynamics. Above a fixed pressure, plasma propagation into Ar leads to the formation of blast waves causing both a considerable increase of the fraction of excited Mg atoms and a simultaneous reduction of their kinetic flux energy. These results can be particularly useful for optimizing MgB2 thin-film deposition processes. (C) 2002 American Institute of Physics.

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页码：4315 / 4317

页数：3

相关论文

共 12 条

[1] Spherical expansion of the vapor plume into ambient gas: an analytical model [J].

Arnold, N ;

Gruber, J ;

Heitz, J .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1999, 69 (Suppl 1) :S87-S93

[2] Superconducting Mg-B films by pulsed-laser deposition in an in situ two-step process using multicomponent targets [J].

Blank, DHA ;

Hilgenkamp, H ;

Brinkman, A ;

Mijatovic, D ;

Rijnders, G ;

Rogalla, H .

APPLIED PHYSICS LETTERS, 2001, 79 (03) :394-396

[3] Superconducting thin films of MgB2 on Si by pulsed laser deposition [J].

Brinkman, A ;

Mijatovic, D ;

Rijnders, G ;

Leca, V ;

Smilde, HJH ;

Oomen, I ;

Golubov, AA ;

Roesthuis, F ;

Harkema, S ;

Hilgenkamp, H ;

Blank, DHA ;

Rogalla, H .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2001, 353 (1-2) :1-4

[4] Genie in a bottle [J].

Cava, RJ .

NATURE, 2001, 410 (6824) :23-24

[5] Resputtering during the growth of pulsed-laser-deposited metallic films in vacuum and in an ambient gas [J].

Fähler, S ;

Sturm, K ;

Krebs, HU .

APPLIED PHYSICS LETTERS, 1999, 75 (24) :3766-3768

[6] Growth of c-oriented MgB2 thin films by pulsed laser deposition:: structural characterization and electronic anisotropy [J].

Ferdeghini, C ;

Ferrando, V ;

Grassano, G ;

Ramadan, W ;

Bellingeri, E ;

Braccini, V ;

Marré, D ;

Manfrinetti, P ;

Palenzona, A ;

Borgatti, F ;

Felici, R ;

Lee, TL .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2001, 14 (11) :952-957

[7] MgB2 superconducting thin films with a transition temperature of 39 kelvin [J].

Kang, WN ;

Kim, HJ ;

Choi, EM ;

Jung, CU ;

Lee, SL .

SCIENCE, 2001, 292 (5521) :1521-1523

[8]

Martin W. C., 1995, NIST DATABASE ATOMIC

[9] Superconductivity at 39 K in magnesium diboride [J].

Nagamatsu, J ;

Nakagawa, N ;

Muranaka, T ;

Zenitani, Y ;

Akimitsu, J .

NATURE, 2001, 410 (6824) :63-64

[10] Superconducting MgB2 thin films by pulsed laser deposition [J].

Shinde, SR ;

Ogale, SB ;

Greene, RL ;

Venkatesan, T ;

Canfield, PC ;

Bud'ko, SL ;

Lapertot, G ;

Petrovic, C .

APPLIED PHYSICS LETTERS, 2001, 79 (02) :227-229