EXPERIMENTAL-STUDY OF ENHANCED EMISSION OF THE LASER-ABLATED PLUME IN BACKING GAS

被引:28
作者
GU, HP [1 ]
LOU, QH [1 ]
CHEUNG, NH [1 ]
CHEN, SC [1 ]
WANG, ZY [1 ]
LIN, PK [1 ]
机构
[1] HONG KONG BAPTIST COLL,DEPT PHYS,KOWLOON,HONG KONG
来源
APPLIED PHYSICS B-LASERS AND OPTICS | 1994年 / 58卷 / 02期
关键词
D O I
10.1007/BF01082349
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The effects of background gases on the optical emission of the excimer-laser-ablated plume from a brass target have been studied experimentally. It is found that the plume emission can be enhanced significantly in a proper gas ambient. In hydrogen, the highest peak intensity is detected, and in argon, there is a distinctive difference in the pressure-dependent emission between in He and in the other three gases, Ar, N2 and H-2. Moreover, the monitored line peak intensity remains unchanged in Ar and N2 and increases in H-2 within a distance above the target surface; but in He, the observed peak intensity decreases with distance like in vacuum. Furthermore, the emissions of several more atomic lines of Cu and Zn atoms from the plume are also found to be enhanced in the same manner in gas ambient. Some physical processes involved in the plume expansion and the possible mechanisms for the enhanced emission of the plume in backing gas are discussed.
引用
收藏
页码:143 / 148
页数:6
相关论文
共 17 条
[1]  
CHEN WT, 1991, SPECTROCHIM ACTA B, V46, P1471
[2]  
DITTRICH K, 1984, PROG ANAL ATOM SPECT, V7, P139
[3]   CU0, CU+, AND CU-2 FROM EXCIMER-ABLATED COPPER [J].
DREYFUS, RW .
JOURNAL OF APPLIED PHYSICS, 1991, 69 (03) :1721-1729
[4]   ON THE GAS KINETICS OF LASER-INDUCED EVAPORATION OF METALS [J].
FINKE, BR ;
SIMON, G .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1990, 23 (01) :67-74
[6]   EFFECTS OF ATMOSPHERE ON LASER VAPORIZATION AND EXCITATION PROCESSES OF SOLID SAMPLES [J].
IIDA, Y .
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 1990, 45 (12) :1353-1367
[7]   LASER VAPORIZATION OF SOLID SAMPLES INTO A HOLLOW-CATHODE DISCHARGE FOR ATOMIC EMISSION-SPECTROMETRY [J].
IIDA, Y .
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 1990, 45 (4-5) :427-438
[8]  
Iida Y., 1991, J ANAL ATOM SPECTROM, V6, P541
[9]   METAL PLASMA INDUCED BY THE BOMBARDMENT OF 308 NM EXCIMER AND 585 NM DYE-LASER PULSES AT LOW-PRESSURE [J].
KAGAWA, K ;
YOKOI, S ;
NAKAJIMA, S .
OPTICS COMMUNICATIONS, 1983, 45 (04) :261-265
[10]   ON THE EFFECT OF KNUDSEN-LAYER FORMATION ON STUDIES OF VAPORIZATION, SPUTTERING, AND DESORPTION [J].
KELLY, R ;
DREYFUS, RW .
SURFACE SCIENCE, 1988, 198 (1-2) :263-276