Geo-cluster targets for femtosecond laser interaction: Modeling and optimization
Geo-cluster targets for femtosecond laser interaction: Modeling and optimization
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DOI：
10.1063/1.2336105
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发表时间：
2006-08-01
影响因子：
1.6
通讯作者：
Yamakawa, K.
中科院分区：
文献类型：
--
作者：
Boldarev, A. S.;Gasilov, V. A.;Yamakawa, K.
提出了一种用于研究气体射流中团簇形成过程的新颖数学模型，该模型使我们能够获得所有团簇目标参数的空间和时间分布的详细描述。在此模型中，簇目标被视为两相介质，由连续气相和离散凝聚相（簇）组成。该模型还考虑了详细的喷嘴几何形状。为了证实本模型相对于传统模型的优势，进行了大量的数值计算，并将结果与从 Hagena 理论 [Rev.1] 获得的数据进行了比较。科学。仪器。 63, 2374 (1992)]。基于所开发的模型，设计了一种无法使用传统模型进行建模的三级喷嘴，旨在产生足够数量的微米级团簇。使用该喷嘴进行的激光-团簇相互作用实验产生了前所未有的 keV x 射线量，及其对各种实验参数的精确强度依赖性，支持了喷嘴设计的充分性。 (c) 2006 年美国物理研究所。
A novel mathematical model for the investigations of a cluster formation process in a gas jet is presented, which enables us to obtain the detailed description of the spatial and temporal distributions of all cluster target parameters. In this model, a cluster target is considered as a two-phase medium, consisting of the continuous gas phase and the discrete condensed phase (clusters). The detailed nozzle geometry is also taken into account in this model. In order to confirm the advantage of the present model over a conventional model, a considerable amount of numerical computations has been carried out and the results are compared with the data obtained from Hagena's theory [Rev. Sci. Instrum. 63, 2374 (1992)]. Based on the developed modeling, a three-staged nozzle, which cannot be modeled using the conventional model, is designed for the purpose of producing a sufficient amount of micron-sized clusters. The generation of unprecedented amount of keV x rays from the laser-cluster interaction experiments with this nozzle and their accurate intensity dependences on various experimental parameters support the adequateness of the nozzle design. (c) 2006 American Institute of Physics.