Velocity Distribution of $\hbox{H}^{-}$ Ions in Low Temperature Hydrogen Plasma
A Monte Carlo solution of the Boltzmann equation is applied to the calculation of the velocity distribution of negative atomic ions H- in uniform H/H2 plasmas in a wide parameter range. Results are shown for the energy distribution n(epsiv), the 2-D velocity distribution, and the energy-dependent coefficients of the spherical harmonics expansion of its angular part, for different values of the reduced electric field E/N, the atomic fraction, and the H+ mole fraction. By increasing E/N or the atomic fraction at constant ion energy, the velocity distribution becomes highly anisotropic, and at same time, n(epsiv) features a suprathermal tail consistent with analytical results.
Nonresonant optical tagging and "monopolar" transport in negative-ion plasmas.
Une methode de diagnostic est imaginee et utilisee pour mesurer les vitesses de transport local des ions H − dans une source a decharge gazeuse. La methode est basee sur le photodetachement par impulsion laser des ions negatifs induisant des changements locaux dans les densites electronique et ionique dont les evolutions spatiale et temporelle sont tracees en detail grâce a des impulsions lasers et a des sondes. Un nouveau processus de transport ― la derive monopolaire ― est identifie au moyen de cette technique
The Meaning of Wisdom in James: Examination of a Hypothesis
The following essay is an attempt to examine the manner in which the writer of the Epistle of James uses the concept of Wisdom; and to study the suggestion that the way in which he uses it is more or less interchangeable with that in which other writers of the New Testament use the concept of the Holy Spirit.