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Effect of capacitive coupling in a miniature inductively coupled plasma source J. Appl. Phys. 112, 093306 (2012) Time dependent behaviors of ion-ion plasmas exposed to various voltage waveforms in the kilohertz to megahertz frequency range Phys. Plasmas 19, 103501 (2012) Electron scattering in helium for Monte Carlo simulations Phys. Plasmas 19, 093511 (2012) Generation of high-energy (>15 MeV) neutrons using short pulse high intensity lasers Phys. Plasmas 19, 093106 (2012) Improved modeling of relativistic collisions and collisional ionization in particle-in-cell codes Phys. Plasmas 19, 083104 (2012) Additional information on Phys. Plasmas Monte Carlo neutral transport simulations of hydrogen velocities in the Tokamak Fusion Test Reactor ͑TFTR͒ ͓K. M. McGuire et al., Phys. Plasmas 2, 2176 ͑1995͔͒ are compared with experiment using the Doppler-broadened Balmer-␣ spectral line profile. Good agreement is obtained under a range of conditions, validating the treatment of charge exchange, molecular dissociation, surface reflection, and sputtering in the neutral gas code DEGAS ͓D. Heifetz et al., J. Comput. Phys. 46, 309 ͑1982͔͒. A residual deficiency of 10-100 eV neutrals in most of the simulations indicates that further study of the energetics of H 2 ϩ dissociation for electron energies in excess of 100 eV is needed.

The emerging technology of soft x-ray lasers has novel applications to microscopy, lithography, and other fields. This article describes the status of soft x-ray laser research with the aim of bringing the rapid developments in this field to the attention of potential users in other disciplines. The different techniques for generating a population inversion and producing a soft x-ray laser are reviewed. The status of current research in the field and the near-term prospects are described. It is expected that the range of potential applications of soft x-ray lasers will increase as their performance improves. Work aimed at increasing the output power and progressing to shorter wavelengths with these devices is also reviewed.