From the atomic bomb experiment in the mid 20th century, the technological applications in the atomic energy have been studied. The nuclear power plant (NPP) has showed the critical impact on the industry as the aspect of the energy production. Several countries have the big portions in the electrical generation using the atomic power. However, the political situation has blocked the new NPP construction especially in the United Stated during the last 30 years. So, the alternative technology has been developed like the medical physics in the nuclear technology field. This book presents and discusses current research in the study of new technology in the atomic industry.