Speaker
Jiaolong Zeng
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/P4.2028.pdf
Multiple-core hole states production in the interaction of solid-state
density plasmas with a relativistic optical and x-ray free electron laser
Cheng Gao1, Jiaolong Zeng1, Yong Hou1, Jianmin Yuan1,2,3
1
Department of Physics, National University of Defense Technology,
Changsha Hunan 410073, P. R. China
2
Graduate school of China Academy of engineering Physics, Beijing 100193, P. R. China
3
IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240,
P. R. China
Much research on SCH and DCH states have been carried out in the past decades1-3, however,
very few work is reported in the literature on the observation of production for
triple-core-hole (TCH) states4. The investigation of TCH states gives rise to a great challenge
both experimentally and theoretically. Multiple-core states of a silver foil are investigated in
the interaction with a relativistic femtosecond optical laser and x-ray free electron laser.
Strong x-ray emission of TCH atoms with three L-shell electrons being ionized can be
observed at pulse intensities of 3 10 21W / cm 2 . Detailed kinetic calculations showed that the
emissivity originating from the TCH states exceeds that from the single- and
double-core-hole states in Ne-like Ag37+ and is comparable in the neighbouring ionization
stages of Ag36+ and Ag38+ in the produced plasmas at electron temperature of ~500 eV and
raidative temperature of ~1500 eV using optical laser. These extremely exotic dense matter
states are produced by an intense polychromatic x-ray field formed by hot electrons produced
in the interaction of the laser. This work opens new ways to the deep insight into
investigation of extremely exotic states properties which is important in high energy density
physics, astrophysics and laser physics.
1. Young, L. et al. Femtosecond electronic response of atoms to ultra-intense x-rays. Nature 466, 56-62 (2010).
2. Rudek, B. et al. Ultra-efficient ionization of heavy atoms by intense x-ray free-electron laser pulses. Nature
Photon. 6, 858-865 (2012).
3. Tamasaku, K. et al. Double core-hole creation by sequential attosecond photoionization. Phys. Rev. Lett. 111,
043001 (2013).
4. Wallis, A. O. G., Banks, H. I. B. & Emmanouilidou, A. Traces in ion yields and electron spectra of the formation
of Ar inner-shell hollow states by free-electron lasers. Phys. Rev. A 91, 063402 (2015).
jmyuan@nudt.edu.cn, jlzeng@nudt.edu.cn
