Formation of high-aspect-ratio nanocavity in LiF crystal using a femtosecond X-ray free-electron laser pulse

Makarov, S. S.*; Zhakhovsky, V. V.*; Grigoryev, S. Yu.*; Chuprov, P.*; Pikuz, T. A.*; Inogamov, N. A.*; Khokhlov, V. A.*; Petrov, Y. V.*; Perov, E. A.*; Shepelev, V. V.*; 菖蒲 敬久  ; 冨永 亜希; Rapp, L.*; Juodkazis, S.*; Makita, Mikako*; Nakatsutsumi, Motoaki*; Preston, T. R.*; Appel, K.*; Konopkova, Z.*; Cerantola, V.*; Brambrink, E.*; Schwinkendorf, J.-P.*; Mohacsi, I.*; Vozda, V.*; Hajkova, V.*; Burian, T.*; Chalupsky, J.*; Juha, L.*; 尾崎 典雅*; 兒玉 了祐*; Zastrau, U.*; Rode, A. V.*; Pikuz, S. A.*

Makarov, S. S.*; Zhakhovsky, V. V.*; Grigoryev, S. Yu.*; Chuprov, P.*; Pikuz, T. A.*; Inogamov, N. A.*; Khokhlov, V. A.*; Petrov, Y. V.*; Perov, E. A.*; Shepelev, V. V.*; Shobu, Takahisa; Tominaga, Aki; Rapp, L.*; Juodkazis, S.*; Makita, Mikako*; Nakatsutsumi, Motoaki*; Preston, T. R.*; Appel, K.*; Konopkova, Z.*; Cerantola, V.*; Brambrink, E.*; Schwinkendorf, J.-P.*; Mohacsi, I.*; Vozda, V.*; Hajkova, V.*; Burian, T.*; Chalupsky, J.*; Juha, L.*; Ozaki, Narimasa*; Kodama, Ryosuke*; Zastrau, U.*; Rode, A. V.*; Pikuz, S. A.*

We demonstrate that a single 9-keV pulse from X-ray free-electron-laser can form a nanoscale mm-long cavity in LiF. The laser-generated shock pressure results in channel formation with >1,000 length-to-diameter aspect ratio. The development of void is analyzed via continuum and atomistic simulations revealing a sequence of processes leading to the final long cavity structure. This work presents the study of mm-long nanochannel formation by a single high-brilliance X-ray free-electron laser pulse.