[Abstract]

HORIBA started manufacturing infrared optical crystals in 1954. In the following year, development of the scintillation detector began. This detector, in which Sodium Iodide (NaI) was used, was used for radiation measurements. The infrared optical crystal is a principal part of the technology on which infrared gas analyzers are based. Gas analyzers are the company¡Çs prime products. But on the other hand, the growing of large-sized crystals has also become very successful. We grow some of the largest Sodium Iodide crystals in the World. So here we introduce crystal growth, manufacture of the scintillation detector and gamma plate, as examples of applications related to scintillation detectors for radiation measurements that have been built on the foundation of HORIBA¡Çs radiation technologies.