scope:

These sources deliver their output impulses within the range 10-9 to 10-6 seconds, spaced at least a few milliseconds apart. Condenser discharge machines with field-emission cathodes deliver much larger pulses, usually singly or at very low frequency, and with a pulse duration much less than a microsecond. The report provides information on certain precautions and the selection of calibration constants needed to permit the use of methods of dosimetry employed for measuring continuous radiation from constant potential x-ray sources or from gamma-ray sources. Treated are measurements using ionization chambers, chemical dosimeters, calorimeters and solid state devices. The aim of the report is to guide those who have to measure pulsed radiation to the most convenient and accurate system for their particular problem.