- 作者: Dong Eon Kima, Sang Hyun Sona, Jae Hoon Kima, Csaba Tothb and Chris P. J. Bartyb
- 中文摘要:
aPohang University of Science and Technology, Pohang, 790-784, Republic of Korea
bUniversity of California, San Diego, La Jolla, CA 92093-0339, U.S.A.
A new physical scheme for femtosecond X-ray lasers, where the upper lasing is pumped by X-ray photons and the lower lasing level is depopulated via a Coster-Kronig radiationless transition, is analyzed for Ca. The transition wavelength is 4.1 nm, which is inside the water window. The peak spectral brightness of the X-ray laser output at 4.1 nm is predicted to be as large as 5 ’ 1025 photons/sec./(mm2 mrad2 0.1% bandwidth), which is 4 to 5 orders of magnitude brighter than a typical undulator radiation in the similar spectral region. In addition to the high flux, the expected duration of X-ray lasing of ~3 fs. Will be useful for the study of fast dynamics in physical and biological sciences. - 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --