NUMERICAL-SIMULATION OF OPTICALLY IONIZED PLASMA RECOMBINATION X-RAY LASERS

LASER INTERACTION WITH MATTER (1995) 407-410

Authors:

YF SHAO, SJ ROSE, A DJAOUI

ORTHOGONAL STRAINS AND ONSET OF PLASTICITY IN SHOCKED LIF CRYSTALS

PHYSICAL REVIEW B 52:1 (1995) 8-11

Authors:

RR WHITLOCK, JS WARK

Optical ionization and heating of gases by intense picosecond KrF laser radiation

LASER PART BEAMS 13:1 (1995) 19-31

Authors:

AA OFFENBERGER, W BLYTH, AE DANGOR, A DJAOUI, MH KEY, A MODENA, Z NAJMUDIN, SG PRESTON, JS WARK

Abstract:

We report on multiphoton ionization experiments using picosecond (ps) and sub-ps W-laser radiation at focused intensities up to 10(18) W/cm(2). The experiments are concerned with determining the electron temperature of optically ionized gases produced by intense KrF lasers. Thomson scattering, stimulated Raman scattering (SRS), and X-ray emission measurements have been made and compared with modeling calculations of heating. A particular objective is to identify the respective roles of above-threshold ionization, nonlinear inverse bremsstrahlung absorption, and SRS in determining the temperature of the electrons. Results for 350-fs pulses are compared with previous measurements for 12-ps pubes (for which strikingly different behavior is observed). The importance of using sub-ps, short-wavelength lasers to minimize electron temperature is confirmed.

PLASMA TEMPERATURE IN OPTICAL-FIELD IONIZATION OF GASES BY INTENSE ULTRASHORT PULSES OF ULTRAVIOLET-RADIATION

PHYSICAL REVIEW LETTERS 74:4 (1995) 554-557

Authors:

WJ BLYTH, SG PRESTON, AA OFFENBERGER, MH KEY, JS WARK, Z NAJMUDIN, A MODENA, A DJAOUI, AE DANGOR

SIMULATIONS OF SPECTRA FROM DENSE ALUMINUM PLASMAS

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 54:1-2 (1995) 167-180

Authors:

DJ HEADING, JS WARK, GR BENNETT, RW LEE