Stopping Powers of Some Solids for 30-90-MeVU238Ions

Charge States and Charge-Changing Cross Sections of Fast Heavy Ions Penetrating Through Gaseous and Solid Media

“…A comprehensive analysis of q_ ff has been reported by Brown and Moak (1972). They measured stopping cross sections for uranium ions in various solids and used this data as well as earlier results on bromine and iodine ions with energies up to ^180 MeV in solids Brown 1966, Bridwell et al 1967) to calculate q ff from Eq.(5.12).…”

“…Bohr (1941Bohr ( , 1948 argues that a calculation of the energy loss of fission fragments requires that a certain effective charge, q eff / which characterizes the ionic charge of the fragments, must be known for all velocities during the slowing-down process. Then, in its simplest interpretation, the stopping cross section, S, of a partially stripped heavy ion is related to the stopping cross section, S , of protons at the same velocity and in the same stopping material been applied, for example, by Steigert (1960a, 1960b), Northcliffe (1960), Martin and Northcliffe (1962), Teplova et al (1962), and Bethge et al (1966) and Grant (1965), Cumming and Crespo (1967), Pierce and Blann (1968), Kalish et al (1969), and Brown and Moak (1972 (5.13). Roll and Steigert (1960a) report no significant differences in q ff for ions with Z < 10 when stopped in gaseous and solid media, but in a more careful analysis of more extensive data, Roll and Steigert (1960b) find for fluorine ions that solid stopping materials lead to distinctly higher values of q f £ than gaseous ones.…”

Measuring the Deceleration Parameter of the Fission Fragments in a Gaseous Environment for Uranium Coating the Laser-Active Element of the Laser with Nuclear Pumping

“…It should be noted that the available data on the deceleration parameters of the fragments [7][8] have some scatter. This can, in particular, lead to an error of up to 20-30% when calculating the transverse profile of the energy input in LAEL.…”

“…where the parameter = ( ) ≈ 1-2 [6], and the dependence on the parameters of the run fragment in the environment 0 = 0 ( 0 , , ) is determined by the empirical Bohr-Wheeler relation [8]. The energy loss of an individual FF fragment in matter relative to the average kinetic energy as the distance travels is determined by the equation:…”

Ion Deflection for Final Optics in Laser Inertial Fusion Power Plants

“…Moak [14] where Q E is the equilibrium charge state, Z the ion's atomic number, v its velocity, α the fine structure constant, and c the speed of light.…”