Market leaders in temperature controlled microscopy,Linkam科学仪器报告使用其1400°C高温阶段在弗吉尼亚理工学院的地球科学系的流体研究小组中研究硅酸盐融合物。亚博老虎机网登录
Researchers in the Fluids Research Group at Virginia Tech are concerned with the distribution, properties and role of fluids in and on the Earth, from its surface (shallow Earth's crust) to its deep interior (Earth's mantle). One of the research goals is to understand how volcanoes erupt. The volatile (H2O, CO2, SO2, etc.) content of a magma chamber beneath a volcano is of paramount importance because it determines the energy of the volcanic eruption. Magmas with high volatile contents tend to produce explosive, violent eruptions (like the eruption of Vesuvius that destroyed Pompeii), whereas magmas with lower volatile contents tend to produce more quiescent lava flows (like those in Hawaii). If the volatile content of the magma beneath a volcano can be predicted, then it is possible to predict the style of future eruptions and use this information in risk assessments.
Bodnar组的Rosario Esposito使用Linkam高温阶段研究硅熔体夹杂物。
The only direct way to determine what the volatile content in the magma chamber was before an eruption is by measuring the volatile content in melt inclusions (MI). MI are droplets of melt entrapped during the growth of a crystal in a magma chamber. It is only possible to determine the volatile content of the MI if it remains as a homogeneous quenched melt (glass) as it cools following eruption from the magma chamber. Unfortunately, MI are often found partially or totally recrystallized. Thus, with some exceptions, one cannot analyze a MI to obtain a representative composition of the volatile content of the melt. However, a crystallized melt inclusion can be heated in a controllable temperature stage to re-melt the contents and then rapidly quench the MI to a homogenous glassy state. In this process, the volatiles are dissolved back into the melt and the quenched glass will have the same volatile abundance as it did at the moment of entrapment in the magma chamber.
鲍勃·博德纳（Bob Bodnar）教授大约在15年前获得了弗吉尼亚理工大学的流体研究实验室的第一个原型Linkam高温X-Y阶段，并在随后的几年中率先在许多论文中使用了其使用。当前的Linkam TS1400 X-Y阶段与其他技术结合使用，与其他阶段或测试方法具有许多实验优势。该小组还使用Linkam Thms600阶段，其中一个与Horiba Scientific Raman光谱仪结合使用。
在谈到他使用Linkam TS1400阶段时，博士生Rosario Esposito说：“与我使用的其他阶段相比，使用Linkam阶段安装和删除样品要容易得多。Linkam阶段还提供自动加热/冷却率控制器，而其他温度控制系统必须手动控制。LinkamTS1400 X-Y阶段具有出色的光学器件，使观察到加热过程中熔体夹杂物的各个阶段变化变得更加容易。Linkam阶段的出现导致了更多高高文献中出现的优质照片显示了加热过程中熔体夹杂物的行为。”
The Linkam TS1400 X-Y stage has a ceramic tube heater which completely encases the sample in a uniform temperature controlled environment enabling high accuracy control up to 1400°C within a gas sealed chamber. Samples are mounted on a sapphire sample slide that can be moved up to 6mm in X and Y directions to better explore the sample. Fluid inclusion geologists (like the Bodnar Group) and material scientists interested in high speed quench cooling can add a special manipulator that enables rapid transfer from the heater to a much colder platform resulting in ultra-fast cooling rates of up to 240°C per second.