JaSTA-2: Second version of the Java Superposition T-matrix Application

In this article, we announce the development of a new version of the Java Superposition T-matrix App (JaSTA-2), to study the light scattering properties of porous aggregate particles. It has been developed using Netbeans 7.1.2, which is a java integrated development environment (IDE). The JaSTA uses double precision superposition codes for multi-sphere clusters in random orientation, developed by Mackowski and Mischenko (1996). The new version consists of two options as part of the input parameters: (i) single wavelength and (ii) multiple wavelengths. The first option (which retains the applicability of older version of JaSTA) calculates the light scattering properties of aggregates of spheres for a single wavelength at a given instant of time whereas the second option can execute the code for a multiple numbers of wavelengths in a single run. JaSTA-2 provides convenient and quicker data analysis which can be used in diverse fields like Planetary Science, Atmospheric Physics, Nanoscience, etc. This version of the software is developed for Linux platform only, and it can be operated over all the cores of a processor using the multi-threading option. The previous version of this program (AETB_v1_0) may be found at http://dx.doi.org/10.1016/j.cpc.2014.04.019.本文报道了一款用于研究多孔团聚颗粒光散射特性的新版Java叠加T矩阵应用程序（Java Superposition T-matrix App，简称JaSTA-2）的开发工作。该程序依托Java集成开发环境（Integrated Development Environment，IDE）NetBeans 7.1.2开发完成。原版JaSTA采用了由Mackowski与Mischenko于1996年提出的随机取向多球团簇双精度叠加编码算法。新版JaSTA-2在输入参数中增设了两项可选模式：(i) 单波长模式，(ii) 多波长模式。其中第一项模式保留了旧版JaSTA的功能，可在单次运行中针对单一波长计算球形团聚体的光散射特性；第二项模式则支持在单次运行中对多组波长执行计算任务。JaSTA-2可实现便捷高效的数据分析，可应用于行星科学、大气物理学、纳米科学等诸多领域。该版本软件仅支持Linux平台，且可通过多线程选项调用处理器的全部核心进行运算。该程序的旧版（AETB_v1_0）可通过链接http://dx.doi.org/10.1016/j.cpc.2014.04.019获取。