Comparative study of energy of particles ejected from coulomb explosion of rare gas and metallic clusters irradiated by intense femtosecond laser field

3rd Euro-Mediterranean Conference on Materials and Renewable Energies

材料科学;能源学

Boucerredj, N.^1 ; Beggas, K.^1

Physics Department, Faculty of Sciences, Semiconductor Laboratory, Badji Mokhtar Annaba University, B. P. 12, Annaba

23000, Algeria^1

关键词: Comparative studies;    Electronic emission;    Energetic electron;    Femtosecond laser field;    Fragmentation process;    Hydrodynamic pressure;    Intense laser field;    Metallic clusters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/758/1/012013/pdf
DOI  :  10.1088/1742-6596/758/1/012013

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

We present our study of high intensity femtosecond laser field interaction with large cluster of Kr and Na (contained 2.103to 2.107atoms). When laser intensity is above a critical value, it blows off all of electrons from the cluster and forms a non neutral ion cloud. The irradiation of these clusters by the intense laser field leads to highly excitation energy which can be the source of energetic electrons, electronic emission, highly charge, energetic ions and fragmentation process. During the Coulomb explosion of the resulting highly ionized, high temperature nanoplasma, ions acquire again their energy. It is shown that ultra fast ions are produced. The goal of our study is to investigate in detail a comparative study of the expansion and explosion then the ion energy of metallic and rare gas clusters irradiated by an intense femtosecond laser field. We have found that ions have a kinetic energy up to 105eV and the Coulomb pressure is little than the hydrodynamic pressure. The Coulomb explosion of a cluster may provide a new high energy ion source.