1. More tightly confined directions have bigger widths in the ballistic velocity distribution . 2. Where \ sigma is the fusion Maxwellian velocity distribution at the temperature T. 3. Which is the Maxwell Boltzmann velocity distribution . 4. The concept had a number of technical challenges including maintaining the non-Maxwellian velocity distribution . 5. In particular, this has been used to determine the velocity distribution of interstellar gas clouds. 6. This research contributed to success in generating molecular beams of high energy and narrow velocity distributions . 7. In this case, it is useful to take the average cross section over the velocity distribution . 8. The image is thus a two-dimensional projection of the desired three-dimensional velocity distribution . 9. Thus, the velocity distribution of the reactants tends to decrease from the center to the wall. 10. Such a non-Maxwellian velocity distribution is, however, very difficult to maintain and energetically costly.