HIGH-CURRENT AND DIRECTIONAL ELECTRON-BEAMS PRODUCED FROM GOLD PHOTOCATHODES BY ULTRASHORT EXCIMER LASER-PULSES

被引：30

作者：

MOUSTAIZIS, SD ^{[1
]}

TATARAKIS, M ^{[1
]}

KALPOUZOS, C ^{[1
]}

FOTAKIS, C ^{[1
]}

机构：

[1] UNIV CRETE,DEPT PHYS,IRAKLION,GREECE

来源：

APPLIED PHYSICS LETTERS | 1992年 / 60卷 / 16期

关键词：

D O I：

10.1063/1.107157

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The surface photoelectric effect induced by 500 fs excimer laser pulses in a gold metallic target has been studied. Unexpectedly high current densities of 4 kA/cm2, induced by laser intensities in the 3 GW/cm2 range have been measured. Intense photoelectron emission could also be observed at laser intensities up to 10 GW/cm2 without plasma formation. Furthermore, an electron angular distribution of 18-degrees +/- 2-degrees was obtained for laser intensities in the range of 1-3 GW/cm2. These results are compared to those obtained in previous work for single-photon and multiphoton photoeffects by using longer laser pulses, and their potential exploitation for free-electron laser and accelerator applications is discussed.

引用

页码：1939 / 1941

页数：3

共 23 条

[1] THEORY OF THERMAL RELAXATION OF ELECTRONS IN METALS [J].