First time-resolved measurement of infrared scintillation light in gaseous xenon

Xenon is a widely used detector target material due to its excellent scintillation properties in the ultraviolet (UV) spectrum. The additional use of infrared (IR) light could improve future detectors. However, comprehensive characterization IR component necessary explore potential. We report on first measurement time profile response gaseous xenon. Our setup consists xenon irradiated by an alpha particle source and instrumented with one IR- two UV-sensitive photomultiplier tubes. Thereby, it enables timing measurements nanosecond resolution simultaneous UV signals. find that yield same order magnitude as yield. observe pulses can be described fast slow demonstrate size decreases increasing levels impurities gas. Moreover, we study emission function pressure. These findings confirm earlier observations advance our understanding xenon, which have implications for development novel xenon-based