Holographic Measurement Of Ejecta From Shocked Metal Surfaces

Sensitive polyvinyl alcohol/acrylamide based photopolymer for single pulse holographic recording

“…For instance, in the field of particle field holography, shockwave induced particles may reach to the speed of $ km/s. Thus the exposure time is always limited to nanosecond or less to meet the requirement of recording hypervelocity objects [9][10][11]. When pulsed holography incorporates into multiplexing techniques of volume holography, the changing process of unrepeatable fast events can be recorded.…”

Numerical and theoretical investigations of shock-induced material ejection and ejecta-gas mixing

“…(μm)等特点, 给实验的精细观测带来了极大困难. 数十 年来, 各国均花费了较大的人力、物力, 推动微喷射定 量测试技术的不断发展, 从早期的单一测试技术--Asay膜 [2−4] , 逐步发展到压电探针 [5] 、X光 [6] 、高分辨 率全息 [7] 、高速摄影 [8] 和质子照相 [9] 等多种测试技术 的联合观测. 大量的实验研究表明 [10−24] , 微喷射是一种 极其复杂的界面动力学行为, 主要影响因素包括表面缺 陷结构、冲击加载压力与波形、材料强度以及卸载熔 化等.…”

Constraining ejecta particle size distributions with light scattering

“…Characterizing these ejecta has long been an area of active research at Los Alamos National Laboratory and throughout the broader scientific community through both theory [1][2][3][4][5][6][7][8] and experiment [9][10][11][12][13][14][15][16][17][18][19][20]. In particular, understanding the size distribution of the ejected particles and how it is affected by the surface characteristics has been the subject of much work at Los Alamos [7,[18][19][20].…”