关键词: 雷管, 起爆, 爆轰, 输出

Abstract: The axial initiating ability of a detonator is one of tlie im?portant parameters among its properties. The present paper studies the axial initiating ability of plain bottom detonators by deducing the shock wa?ve velocity and the fragment velocity both theoretically and experimentally. It is found that the initiating ability of plain bottom detonators，within a certain distance, is the result of actions of the two main factors，namely the shock wave and fragments. Since the velocity of the shock wave decays with time and the velocity of the fragments at first accelerates in an undulating manner and then decays， the plain bottom detonator has itfj minimum output somewtere not too distant from the bottom of the de?tonator and a maximum output at some farther distance. The techniques for theoretical calculation and experimental measurements are presented and tlie results discussed.

Key words: detonator, initiation, detonation, output