Vidal F, Johnston T W, Laville S, Barthélemy O, Chaker M, Le Drogoff B, Margot J, Sabsabi M
Insitut National de la Recherche Scienifique-Energie et Matériaux, Varennes, Québec, Canada.
Phys Rev Lett. 2001 Mar 19;86(12):2573-6. doi: 10.1103/PhysRevLett.86.2573.
Laser ablation due to an ultrashort laser pulse on a massive aluminum target was investigated by means of a one-dimensional fluid code. Clear separation between the ablated matter and the unablated target is seen to occur through spinodal decomposition involving thermodynamic instabilities near the critical point of aluminum. The code also shows that the end of the ablation process is preceded by the ejection of droplets, which form about 15% of the total ejected mass.
利用一维流体程序研究了超短激光脉冲对块状铝靶的激光烧蚀。通过涉及铝临界点附近热力学不稳定性的旋节线分解，可以看到烧蚀物质与未烧蚀靶材之间出现了清晰的分离。该程序还表明，在烧蚀过程结束之前会有液滴喷射，液滴质量约占总喷射质量的15%。
