EXPERIMENTAL METHODS FOR MEASURING X-RAY ABLATION RESPONSE OF SURFACES

• Published in: Experimental heat transfer Vol. 10; no. 1; pp. 51 - 65
• Main Authors: Anderson, A. T., Peterson, P. F.
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01-01-1997; Taylor & Francis
• Subjects: Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Physics; Radiation treatment (particle and electromagnetic); Radiation treatments; Treatment of materials and its effects on microstructure and properties; Bubbles; Aluminium base alloys; Borides carbides; Soft X radiation; Inertial confinement; Physical radiation effects; X radiation; Spallation; Ablation; Application; Vaporization
• ISSN: 0891-6152; 1521-0480
• DOI: 10.1080/08916159708946534

X-ray ablation from surfaces plays an important role in chamber response for inertial confinement fusion (ICF) systems. Although similar in many respects to laser-induced ablation, X-ray ablation differs significantly in the mechanisms for energy deposition. Surface response differs far various materials, with same exhibiting kineticalfy limited surface vaporization, bubble nucleation and met ejection, and solid surface spall This article introduces the experimental methods which have been developed to measure material removal depths, melt depths, and postirradiation surface characteristics which identify primary removal mechanisms. Results art discussed for three specific materials-fused silica, boron carbide, and aluminum-to illustrate the primary removal mechanisms. Combined with appropriate physical models, the experimental measurements allow accurate prediction of material X-ray response under conditions characteristic of ICF chambers.