The ability to capture hypervelocity projectiles intact opens a new technique available for hypervelocity research. A determination of the reactions taking place between the projectile and the capture medium during the process of intact capture is extremely important to an understanding of the intact capture phenomenon, to improving the capture technique, and to developing a theory describing the phenomenon. The intact capture of hypervelocity projectiles by underdense media generates spectra, characteristic of the material species of projectile and capture medium involved. Initial exploratory results into real-time characterization of hypervelocity intact capture techniques by spectroscopy include ultra-violet and visible spectra obtained by use of reflecting gratings, transmitting gratings, and prisms, and recorded by photographic and electronic means. Spectrometry proved to be a valuable real-time diagnostic tool for hypervelocity intact capture events, offering understanding of the interactions of the projectile and the capture medium during the initial period and providing information not obtainable by other characterizations. Preliminary results and analyses of spectra produced by the intact capture of hypervelocity aluminum spheres in polyethylene (PE), polystyrene (PS), and polyurethane (PU) foams are presented. Included are tentative emission species identifications, as well as gray body temperatures produced in the intact capture process.

中文翻译：

---

超高速完整捕获光谱的探索性研究

完整捕获超高速射弹的能力开辟了可用于超高速研究的新技术。确定完整俘获过程中弹丸与俘获介质之间发生的反应对于理解完整俘获现象、改进俘获技术和发展描述该现象的理论极为重要。低密度介质对超高速射弹的完整捕获会产生光谱，这是所涉及的射弹和捕获介质的材料种类的特征。通过光谱学实时表征超高速完整捕获技术的初步探索结果包括通过使用反射光栅、透射光栅和棱镜获得的紫外和可见光谱，并以摄影和电子方式记录。光谱法被证明是一种用于超高速完整捕获事件的有价值的实时诊断工具，它提供了对初始阶段弹丸和捕获介质相互作用的理解，并提供了其他表征无法获得的信息。介绍了在聚乙烯 (PE)、聚苯乙烯 (PS) 和聚氨酯 (PU) 泡沫中完整捕获超高速铝球所产生的光谱的初步结果和分析。包括暂定的排放物种识别，以及完整捕获过程中产生的灰色体温。提供对初始阶段射弹和捕获介质相互作用的理解，并提供其他表征无法获得的信息。介绍了在聚乙烯 (PE)、聚苯乙烯 (PS) 和聚氨酯 (PU) 泡沫中完整捕获超高速铝球所产生的光谱的初步结果和分析。包括暂定的排放物种识别，以及完整捕获过程中产生的灰色体温。提供对初始阶段射弹和捕获介质相互作用的理解，并提供其他表征无法获得的信息。介绍了在聚乙烯 (PE)、聚苯乙烯 (PS) 和聚氨酯 (PU) 泡沫中完整捕获超高速铝球所产生的光谱的初步结果和分析。包括暂定的排放物种识别，以及完整捕获过程中产生的灰色体温。