Application Of High-Speed Photography To Time-Resolved Wavefront Measurement

Comments About Nuclear-Pumped Laser Research in the United States

“…A record peak laser power of 3.7 W was achieved from a relatively small 3 He-Ar (1 % Ar) (1.79 μm) NPL at a total pressure of 4 atm. However, further increases in laser power were prevented by the small fraction of neutrons interacting with either 3 He or coated walls in the cell. Thus, a new laser geometry was devised to intercept more of the reactor neutrons.…”

“…13 decomposition. In summary, both 3 He and 235 UF 6 have been effective for pumping noble gas lasers. This coating reaction does not scale with volume as desired.…”

“…In study [32], he proposed study of a class of NPLs in which the laser levels are populated by negative ion-positive ion neutralization. He analyzed two particular systems, 3 2 , and a fission power to laser power conversion efficiency of %0.4 % were predicted. The electron density in the attachment process was evaluated, and the highly selective nature of the ion-ion neutralization in producing product-excited states.…”

“…Fissionfragment excitation was used to generate the gain in Ar/Xe, He/Ar/Xe, and Ne/Ar/Xe gas mixtures at a pump power of 8 W/cm 3 . For constant gas density, the gain exhibited an approximate T Àn gas dependence with n between 2 and 3.…”

“…Due to limitations on length, this chapter cannot do justice to the major effort done in the reactors at Sandia National Laboratory and earlier work at the Idaho National Laboratory [3][4][5][6][7][8][9]. These projects originated by Victor George at Lawrence Livermore National Laboratory under "Star Wars" funding and were classified (interested readers may now be able to find declassified versions of some reports).…”