The Experimental Determination of the Melting Curves of Mantle Materials at Mantle Conditions

实验测量了(Mg,Fe)- 2Si)04、（Mg,Fe）3Al2Si3012和（Mg,Fe）Si03在压力范围从上地幔最底层（15GPa）到地核-地幔边界（130GPs）下的熔化曲线。该研究将通过增加Nd-Yag激光器的稳定性和使用多通道光学分析仪来显著提高温度测量的准确性。对激光加热金刚石细胞样品的热结构进行了模拟计算。这些计算对于更好地表征样品中的大温度梯度以及评估样品中热应力的大小和潜在重要性是必要的。

Experimental measurements of the melting curves of (Mg,Fe)- 2Si)04, (Mg,Fe)3Al2Si3012, and (Mg,Fe)Si03 at pressures ranging from the lowermost upper mantle (15GPa) to the core-mantle boundary (130GPs) will be made using a laser heated diamond cell. The research will significantly improve the accuracy of the temperature measurements by increasing the stability of the Nd-Yag laser and using a multichannel optical analyzer. Calcu- lations to model the thermal structure of the laser heated diamond cell samples are also planned. These calculations are necessary to better characterize the large temperature gradients across the sample as well assess the magnitude and potential importance of thermal stresses within the samples.