ALPHA Series, Recommended for applications where resolution is the primary consideration. Suitable for applications such as thickness measurement and near-surface flaw detection. Very short pulse - mechanically damped to the limit of current technology. Gain is usually lower than that of the Gamma and Benchmark Series. Broadband - typical 6 dB bandwidths range from 50% to 100%. Typical Alpha waveforms exhibit one to two full ring cycles, depending on frequency, size and other parameters.