Spectroscopy of Laser-Produced Plasmas

Atomic Processes in High-Density Plasmas

“…For fully stripped ions, the potential v(q) is simply: vlq) = 4HQe/q Z The structure factor S(q) is given in Eq. (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). With these approximations, the electron mean-free-path is:…”

“…(4-15) is regarded as an effective or model Harailtonian, it satisfies Koopman's theorem with the eigenvalue E n of Eq. (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). This property is required for thermodynamic consistency.…”

“…For thermal equilibrium applications of the average-atom model, the integer population P n is replaced by an average population calculated from Fermi statistics, (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16) where D" = 2n 2 is the shell degeneracy. The energy EQ appearing in (4-16) is obtained by consistently solving Eqs.…”

“…(4-1, 4-3) or in the algebraic screened hydrogenic model of Eqs. (4)(5)(6)(7)(8) to (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15).…”

Ultrafast selected-energy x-ray absorption spectroscopy (USEXAS) with a laser-driven x-ray source

“…The plasma x-ray sources have been studied for over three decades, and have been reviewed in many excellent articles. (7,8) Recently, elaborate schemes have been used to produce ultrafast hard xray pulses of hundreds of femtoseconds, (9)(10)(11)(12)(13) and various diffraction and absorption measurements have been performed with these ultrafast laser based sources. (5,6,14,15) A LEXS consists of two major components, a terawatt laser system and an x-ray target apparatus.…”