Acquisition of a UV Laser Ablation System for 40Ar/39Ar Research

这笔拨款为新墨西哥理工大学氩/氩地质年代学/热年代学实验室提供了49,055美元，作为购买紫外激光烧蚀系统的一半费用支持。紫外激光将允许这些PI在小至50微米的斑点上进行原位40-Ar/39-Ar分析，允许更高分辨率的研究，而不是目前使用二氧化碳激光进行步进加热和全聚变分析。紫外激光与稀有气体质谱联用在单个流体包裹体的定年和地球化学分析、经济矿床的蚀变相和过度生长的定年以及微尺度Ar扩散系统的研究方面具有很大的潜力，毫无疑问将被这些生产性PI大量使用。＊＊＊

9706062 Heizler This grant provides $49,055 as one-half support of the costs of acquiring a UV laser ablation system for the Ar/Ar geochronology/thermochronology lab at New Mexico Tech. A UV laser will allow these PI's to conduct in situ 40-Ar/39-Ar analyses on spot sizes as small as 50 microns, allowing for higher resolution studies than currently achievable with their CO2 laser used for step-heating and total fusion analyses. The use of a UV laser coupled with rare gas mass spectrometery has a great deal of potential for dating and geochemical analyses of individual fluid inclusions, dating alteration phases and overgrowths in economic mineral deposits and for studies of micro- scale Ar diffusion systematics and undoubtedly will be heavily used by these productive PI's. ***