Interaction of intense laser pulses with hydrogen atomic clusters

doi:10.1088/1674-1056/19/3/035202

中国物理B ›› 2010, Vol. 19 ›› Issue (3): 35202-035202.doi: 10.1088/1674-1056/19/3/035202

Interaction of intense laser pulses with hydrogen atomic clusters

王慧巧¹, 杜洪川², 刘作业², 孙少华², 李露², 马玲玲², 胡碧涛²

(1)Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, China; (2)School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China

收稿日期:2009-05-06 修回日期:2009-07-24 出版日期:2010-03-15 发布日期:2010-03-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos.~10575046 and 10775062).

Interaction of intense laser pulses with hydrogen atomic clusters

Du Hong-Chuan(杜洪川)^a), Wang Hui-Qiao(王慧巧)^b), Liu Zuo-Ye(刘作业)^a), Sun Shao-Hua(孙少华)^a), Li Lu(李露)^a), Ma Ling-Ling(马玲玲)^a), and Hu Bi-Tao(胡碧涛)^a)†

^a School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China; ^b Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, China

Received:2009-05-06 Revised:2009-07-24 Online:2010-03-15 Published:2010-03-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos.~10575046 and 10775062).

摘要/Abstract

摘要： The interaction between intense femtosecond laser pulses and hydrogen atomic clusters is studied by a simplified Coulomb explosion model. The dependences of average proton kinetic energy on cluster size, pulse duration, laser intensity and wavelength are studied respectively. The calculated results indicate that the irradiation of a femtosecond laser of longer wavelength on hydrogen atomic clusters may be a simple, economical way to produce highly kinetic hydrogen ions. The phenomenon suggests that the irradiation of femtosecond laser of longer wavelength on deuterium atomic clusters may be easier than that of shorter wavelength to drive nuclear fusion reactions. The product of the laser intensity and the squared laser wavelength needed to make proton energy saturated as a function of the squared cluster radius is also investigated. The proton energy distribution calculated is also shown and compared with the experimental data. Our results are in agreement with the experimental results fairly well.

Abstract: The interaction between intense femtosecond laser pulses and hydrogen atomic clusters is studied by a simplified Coulomb explosion model. The dependences of average proton kinetic energy on cluster size, pulse duration, laser intensity and wavelength are studied respectively. The calculated results indicate that the irradiation of a femtosecond laser of longer wavelength on hydrogen atomic clusters may be a simple, economical way to produce highly kinetic hydrogen ions. The phenomenon suggests that the irradiation of femtosecond laser of longer wavelength on deuterium atomic clusters may be easier than that of shorter wavelength to drive nuclear fusion reactions. The product of the laser intensity and the squared laser wavelength needed to make proton energy saturated as a function of the squared cluster radius is also investigated. The proton energy distribution calculated is also shown and compared with the experimental data. Our results are in agreement with the experimental results fairly well.

Key words: femtosecond laser pulse, Coulomb explosion, hydrogen atomic cluster

中图分类号: (Charged clusters)

36.40.Wa

33.80.-b (Photon interactions with molecules) 42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)

杜洪川, 王慧巧, 刘作业, 孙少华, 李露, 马玲玲, 胡碧涛. Interaction of intense laser pulses with hydrogen atomic clusters[J]. 中国物理B, 2010, 19(3): 35202-035202.

Du Hong-Chuan(杜洪川), Wang Hui-Qiao(王慧巧), Liu Zuo-Ye(刘作业), Sun Shao-Hua(孙少华), Li Lu(李露), Ma Ling-Ling(马玲玲), and Hu Bi-Tao(胡碧涛). Interaction of intense laser pulses with hydrogen atomic clusters[J]. Chin. Phys. B, 2010, 19(3): 35202-035202.

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Interaction of intense laser pulses with hydrogen atomic clusters

Interaction of intense laser pulses with hydrogen atomic clusters

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