Proton radiography and accurate density measurements: A window into shock wave processes

Autor:	Mark Marr-Lyon, Dale Tupa, Kris Kwiatkowski, Christopher Morris, Frank E. Merrill, Fesseha Mariam, C. L. Schwartz, Alexander Saunders, P. Rightly, P. A. Rigg, Robert Hixson, Gary E. Hogan
Rok vydání:	2008
Předmět:	Shock wave Materials science business.industry Proton radiography chemistry.chemical_element Condensed Matter Physics Electronic Optical and Magnetic Materials Nuclear magnetic resonance Optics chemistry Aluminium Neutron Shock front business
Zdroj:	Physical Review B. 77
ISSN:	1550-235X 1098-0121
Popis:	Direct density measurements were made from shock-loaded aluminum and copper samples by combining plate-impact experiments with proton radiography at the Los Alamos Neutron Science Center. Flyer plates were accelerated using a 40 mm bore powder gun to create a shock wave in a sample. The sample material was then interrogated in real time using the proton radiography facility. The increase in density behind the shock front causes a measurable change in the transmission of protons through the sample, which can then be quantified as a density value in the material. Hugoniot values were calculated using more traditional techniques to evaluate the accuracy of the radiographically obtained density measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::01211907065da095560474c71918cc1e https://doi.org/10.1103/physrevb.77.220101 Zobrazit plný text záznamu