Interaction of ultrashort x-ray pulses with B{sub 4}C, SiC, and Si
- Laboratory of Molecular Biophysics, Uppsala University, Husargatan 3, Box 596, SE-75124, Uppsala (Sweden)
The interaction of 32.5 and 6 nm ultrashort x-ray pulses with the solid materials B{sub 4}C, SiC, and Si is simulated with a nonlocal thermodynamic equilibrium radiation transfer code. We study the ionization dynamics as a function of depth in the material and modifications of the opacity during irradiation, and estimate the crater depth. Furthermore, we compare the estimated crater depth with experimental data, for fluences up to 2.2 J/cm{sup 2}. Our results show that, at 32.5 nm irradiation, the opacity changes by less than a factor of 2 for B{sub 4}C and Si and by a factor of 3 for SiC, for fluences up to 200 J/cm{sup 2}. At a laser wavelength of 6 nm, the model predicts a dramatic decrease in opacity due to the weak inverse bremsstrahlung, increasing the crater depth for high fluences.
- OSTI ID:
- 21101947
- Journal Information:
- Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print), Vol. 77, Issue 2; Other Information: DOI: 10.1103/PhysRevE.77.026404; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1539-3755
- Country of Publication:
- United States
- Language:
- English
Similar Records
Damage threshold of inorganic solids under free-electron-laser irradiation at 32.5 nm wavelength
Sub-nanometer-scale measurements of the interaction of ultrafast soft x-ray free-electron-laser pulses with matter