RANDOM-DRIFT SAMPLING - A STUDY BY COMPUTER SIMULATION

Bias introduced by a continuous-drift sampling method for selecting and measuring tracks in nuclear emulsion was evaluated by computer simulation. The sample distributions drawn from population types and densities that are of possible interest to neutron spectroscopy were compared with expected distributions by χ2, sign and sum, and spacing distribution tests. The results indicate that the random-drift method provides samples that closely approximate in general shape and in slope the populations from which they are drawn. In addition, the bounds and limits of random-drift sampling domains, and the number of tracks sampled per 2.5 cm pass, are given for certain distributions pertinent to fast neutron spectroscopy. © 1968.