Noble gases and nitrogen are investigated in eight individual chondrules of the Dhajala H3.8 chondrite. The mean cosmic ray exposure age of the chondrules using ²¹Ne and ³⁸Ar is 5.9 ± 3.0 Ma. There is no significant evidence of a pre‐exposure for these chondrules. All the measured chondrules contain variable amounts of radiogenic ¹²⁹Xe. Noble gas analysis indicates Q‐type gas incorporated in the chondrules. The chondrules have variable amounts of N₂. The chondrules have distinct trapped N isotopic composition (δ¹⁵N_t varies from −24.1 ± 8.4‰ to 89.1 ± 12.7‰), which is inconsistent with Q‐gas and solar wind. These inconsistencies can be considered preliminary evidence in support of multiple trapped components in the chondrules. A heavy N signature component is observed in the chondrules studied contrasted with the solar wind composition. There is no correlation between the concentration of N₂ and noble gases. Derivations of variable nitrogen observed in Dhajala (H3.8) chondrules reflect the gas captured at the time of formation, having heterogeneous isotopic signature in the nebula.

中文翻译：

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Dhajala球粒陨石的激光微探针稀有气体和球藻的氮分析

在Dhajala H3.8球粒陨石的八个单独球粒中研究了稀有气体和氮气。使用²¹ Ne和³⁸ Ar的球体的平均宇宙射线暴露年龄为5.9±3.0 Ma。没有明显证据表明这些软骨预先接触。所有测得的软骨都包含可变数量的放射源¹²⁹ Xe。稀有气体分析表明，Q型气体混入了球状晶体中。软骨具有可变量的N ₂。所述球粒具有不同的截留Ñ同位素组成（δ ¹⁵ Ñ_吨变化范围为−24.1±8.4‰至89.1±12.7‰），这与Q气和太阳风不一致。这些不一致可以被视为支持软骨中多个被困成分的初步证据。与太阳风成分相比，在研究的球囊中观察到了重的N标记成分。N ₂的浓度与稀有气体之间没有相关性。在Dhajala（H3.8）软骨中观察到的可变氮的衍生物反映了形成时捕获的气体，在星云中具有异质同位素特征。