Thermoacoustic dosimetry of electron beam in extra field

The theoretical basis is elaborated for thermoacoustic dosimetry of electron beam by one-dimensional (1-D) thin target (TT) in extra thermal and electromagnetic fields. The basic equation joining the deposited energy distribution to the stress wave amplitude in the case when the generation coefficient is function of temperature and coordinate in material permits realizing nonlinear thermoacoustic dosimetry with regulated sensitivity. Some variants of joint employment of the thermoacoustic dosimeter and electromagnetic scanner/splitter are considered. The first variant consists in beam scanning along 1-D dosimeter body to create the moving thermoacoustic source. This regime may be used for dosimetry of long beams. The second variant consists in spectral decomposition of the beam in electromagnetic field before its directing to the dosimeter. Principle of operation for some thermoelastic dosimeters on the base of 1-D TTs is considered