Nucl.Data Tables 7

diminishes and the range correction is correspondingly less
important. At the highest tabulated energy the corrections
ranged from AR/R ~. 10 -4 (for protons in beryllium) to
AR/R ~ 0.2 (for 2s2 Fm ions in uranium).
C. 3hdtiple Scattering aid Straggling
The range values in this tabulation actually are inte-
grated path lengths. The true range (mean depth of penetra-
tion) is somewhat shorter because of numerous small de-
flections (multiple scattering). Furthermore, the range dis-
tribution (dist.ribution of penetration depths, arising from
the statistical nature of the energy-loss process, called range
straggling) is not, in general, symmetric, and is not well un-
derstood for heavy ions. Because of the uncertainties and
complexities associated with corrections and interpretations
for these effects, no such corrections have been included.
VI. USE OF TABLES AND CURVES
The electronic stopping power (-dE/dx) and the range
R (corrected for nuclear stopping but not for multiple scat-
tering or straggling) are tabulated for 24 different materials
for ions of all atomic numbers 1 ~